Refactored code a bit.

Moved configuration to separate form.
Added option to show past appointments from the selected day (previous in time, that is).
Added some tooltips.

Outlook2013TodoAddIn/AppointmentsControl.Designer.cs

@@ -29,56 +29,17 @@
         private void InitializeComponent()
         {
             this.components = new System.ComponentModel.Container();
-            this.numRangeDays = new System.Windows.Forms.NumericUpDown();
-            this.lblRangeDays = new System.Windows.Forms.Label();
             this.ctxMenuAppointments = new System.Windows.Forms.ContextMenuStrip(this.components);
             this.mnuItemReplyAllEmail = new System.Windows.Forms.ToolStripMenuItem();
-            this.btnRefresh = new System.Windows.Forms.Button();
             this.panel1 = new System.Windows.Forms.Panel();
             this.listView1 = new System.Windows.Forms.ListView();
             this.columnHeader1 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
             this.columnHeader2 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
-            this.grpRefresh = new System.Windows.Forms.GroupBox();
-            this.chkMailAlerts = new System.Windows.Forms.CheckBox();
             this.apptCalendar = new Outlook2013TodoAddIn.CustomCalendar();
-            ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).BeginInit();
             this.ctxMenuAppointments.SuspendLayout();
             this.panel1.SuspendLayout();
-            this.grpRefresh.SuspendLayout();
             this.SuspendLayout();
             // 
-            // numRangeDays
-            // 
-            this.numRangeDays.Location = new System.Drawing.Point(61, 26);
-            this.numRangeDays.Maximum = new decimal(new int[] {
-            30,
-            0,
-            0,
-            0});
-            this.numRangeDays.Minimum = new decimal(new int[] {
-            1,
-            0,
-            0,
-            0});
-            this.numRangeDays.Name = "numRangeDays";
-            this.numRangeDays.Size = new System.Drawing.Size(55, 22);
-            this.numRangeDays.TabIndex = 2;
-            this.numRangeDays.Value = new decimal(new int[] {
-            3,
-            0,
-            0,
-            0});
-            this.numRangeDays.ValueChanged += new System.EventHandler(this.numRangeDays_ValueChanged);
-            // 
-            // lblRangeDays
-            // 
-            this.lblRangeDays.AutoSize = true;
-            this.lblRangeDays.Location = new System.Drawing.Point(11, 28);
-            this.lblRangeDays.Name = "lblRangeDays";
-            this.lblRangeDays.Size = new System.Drawing.Size(44, 17);
-            this.lblRangeDays.TabIndex = 3;
-            this.lblRangeDays.Text = "Days:";
-            // 
             // ctxMenuAppointments
             // 
             this.ctxMenuAppointments.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
@@ -93,21 +54,9 @@
             this.mnuItemReplyAllEmail.Text = "Reply All With Email";
             this.mnuItemReplyAllEmail.Click += new System.EventHandler(this.mnuItemReplyAllEmail_Click);
             // 
-            // btnRefresh
-            // 
-            this.btnRefresh.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
-            this.btnRefresh.Location = new System.Drawing.Point(122, 23);
-            this.btnRefresh.Name = "btnRefresh";
-            this.btnRefresh.Size = new System.Drawing.Size(77, 27);
-            this.btnRefresh.TabIndex = 4;
-            this.btnRefresh.Text = "Refresh";
-            this.btnRefresh.UseVisualStyleBackColor = true;
-            this.btnRefresh.Click += new System.EventHandler(this.btnRefresh_Click);
-            // 
             // panel1
             // 
             this.panel1.Controls.Add(this.listView1);
-            this.panel1.Controls.Add(this.grpRefresh);
             this.panel1.Controls.Add(this.apptCalendar);
             this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.panel1.Location = new System.Drawing.Point(0, 0);
@@ -125,11 +74,11 @@
             this.listView1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.listView1.FullRowSelect = true;
             this.listView1.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
-            this.listView1.Location = new System.Drawing.Point(0, 315);
+            this.listView1.Location = new System.Drawing.Point(0, 228);
             this.listView1.MultiSelect = false;
             this.listView1.Name = "listView1";
             this.listView1.ShowItemToolTips = true;
-            this.listView1.Size = new System.Drawing.Size(258, 452);
+            this.listView1.Size = new System.Drawing.Size(258, 539);
             this.listView1.TabIndex = 4;
             this.listView1.TileSize = new System.Drawing.Size(300, 38);
             this.listView1.UseCompatibleStateImageBehavior = false;
@@ -146,31 +95,6 @@
             this.columnHeader2.Text = "Subject";
             this.columnHeader2.Width = 200;
             // 
-            // grpRefresh
-            // 
-            this.grpRefresh.Controls.Add(this.chkMailAlerts);
-            this.grpRefresh.Controls.Add(this.btnRefresh);
-            this.grpRefresh.Controls.Add(this.lblRangeDays);
-            this.grpRefresh.Controls.Add(this.numRangeDays);
-            this.grpRefresh.Dock = System.Windows.Forms.DockStyle.Top;
-            this.grpRefresh.Location = new System.Drawing.Point(0, 228);
-            this.grpRefresh.Name = "grpRefresh";
-            this.grpRefresh.Size = new System.Drawing.Size(258, 87);
-            this.grpRefresh.TabIndex = 3;
-            this.grpRefresh.TabStop = false;
-            this.grpRefresh.Text = "Configuration:";
-            // 
-            // chkMailAlerts
-            // 
-            this.chkMailAlerts.AutoSize = true;
-            this.chkMailAlerts.Location = new System.Drawing.Point(41, 59);
-            this.chkMailAlerts.Name = "chkMailAlerts";
-            this.chkMailAlerts.Size = new System.Drawing.Size(143, 21);
-            this.chkMailAlerts.TabIndex = 5;
-            this.chkMailAlerts.Text = "Enable Mail Alerts";
-            this.chkMailAlerts.UseVisualStyleBackColor = true;
-            this.chkMailAlerts.CheckedChanged += new System.EventHandler(this.chkMailAlerts_CheckedChanged);
-            // 
             // apptCalendar
             // 
             this.apptCalendar.BoldedDates = null;
@@ -192,6 +116,7 @@
             this.apptCalendar.TodayForeColor = System.Drawing.Color.White;
             this.apptCalendar.CellDoubleClick += new System.EventHandler(this.apptCalendar_CellDoubleClick);
             this.apptCalendar.SelectedDateChanged += new System.EventHandler(this.apptCalendar_SelectedDateChanged);
+            this.apptCalendar.ConfigurationButtonClicked += new System.EventHandler(this.apptCalendar_ConfigurationButtonClicked);
             // 
             // AppointmentsControl
             // 
@@ -200,29 +125,21 @@
             this.Controls.Add(this.panel1);
             this.Name = "AppointmentsControl";
             this.Size = new System.Drawing.Size(258, 767);
-            ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).EndInit();
             this.ctxMenuAppointments.ResumeLayout(false);
             this.panel1.ResumeLayout(false);
-            this.grpRefresh.ResumeLayout(false);
-            this.grpRefresh.PerformLayout();
             this.ResumeLayout(false);
 
         }
 
         #endregion
 
-        private System.Windows.Forms.NumericUpDown numRangeDays;
-        private System.Windows.Forms.Label lblRangeDays;
         private System.Windows.Forms.ContextMenuStrip ctxMenuAppointments;
         private System.Windows.Forms.ToolStripMenuItem mnuItemReplyAllEmail;
         private System.Windows.Forms.Panel panel1;
-        private System.Windows.Forms.Button btnRefresh;
         private CustomCalendar apptCalendar;
         private System.Windows.Forms.ListView listView1;
         private System.Windows.Forms.ColumnHeader columnHeader1;
         private System.Windows.Forms.ColumnHeader columnHeader2;
-        private System.Windows.Forms.GroupBox grpRefresh;
-        private System.Windows.Forms.CheckBox chkMailAlerts;
 
 
     }

Outlook2013TodoAddIn/AppointmentsControl.cs

@@ -1,4 +1,5 @@
-using System;
+using Outlook2013TodoAddIn.Forms;
+using System;
 using System.Collections.Generic;
 using System.Drawing;
 using System.Linq;
@@ -12,24 +13,21 @@ namespace Outlook2013TodoAddIn
     public partial class AppointmentsControl : UserControl
     {
         #region "Properties"
-        
+
         /// <summary>
         /// Number of days (including today) to retrieve appointments from in the future
         /// </summary>
-        public decimal NumDays
+        public decimal NumDays { get; set; }
-        {
-            get { return this.numRangeDays.Value; }
-            set { this.numRangeDays.Value = value; }
-        }
 
         /// <summary>
         /// Gets/sets whether mail notifications are enabled or not
         /// </summary>
-        public bool MailAlertsEnabled
+        public bool MailAlertsEnabled { get; set; }
-        {
+
-            get { return this.chkMailAlerts.Checked; }
+        /// <summary>
-            set { this.chkMailAlerts.Checked = value; }
+        /// Gets/sets whether to show past appointments in the current day or not
-        }
+        /// </summary>
+        public bool ShowPastAppointments { get; set; }
 
         /// <summary>
         /// Gets/sets the selected calendar date
@@ -50,7 +48,6 @@ namespace Outlook2013TodoAddIn
         public AppointmentsControl()
         {
             InitializeComponent();
-            this.btnRefresh.FlatAppearance.MouseOverBackColor = this.apptCalendar.HoverBackColor;
         }
 
         /// <summary>
@@ -64,74 +61,82 @@ namespace Outlook2013TodoAddIn
         }
 
         /// <summary>
-        /// Change days to retrieve appointments in the future
+        /// Retrieves tasks for all stores
         /// </summary>
-        /// <param name="sender">Sender</param>
+        public void RetrieveTasks()
-        /// <param name="e">EventArgs</param>
-        private void numRangeDays_ValueChanged(object sender, EventArgs e)
         {
-            Properties.Settings.Default.NumDays = this.numRangeDays.Value;
+            // We want tasks for all the accounts
-            this.RetrieveAppointments();
+            //foreach (Outlook.Store store in Globals.ThisAddIn.Application.Session.Stores)
+            //{
+            //    // Get the Outlook to-do folder to retrieve the items
+            //    MessageBox.Show("Store: " + store.DisplayName);
+            //    // TODO: try..catch (public folders times out)
+            Outlook.Folder todoFolder =
+                Globals.ThisAddIn.Application.Session.GetDefaultFolder(
+                Outlook.OlDefaultFolders.olFolderToDo)
+                as Outlook.Folder;
+            this.RetrieveTasksForFolder(todoFolder);
         }
 
         /// <summary>
-        /// Manual refresh
+        /// Retrieves to-do tasks for the folder on the specified store
         /// </summary>
-        /// <param name="sender">Sender</param>
+        /// <param name="todoFolder">Outlook folder</param>
-        /// <param name="e">EventArgs</param>
+        private void RetrieveTasksForFolder(Outlook.Folder todoFolder)
-        private void btnRefresh_Click(object sender, EventArgs e)
         {
-            this.RetrieveAppointments();
+            foreach (object item in todoFolder.Items)
+            {
+                if (item is Outlook.MailItem)
+                {
+                    Outlook.MailItem mail = item as Outlook.MailItem;
+                    //mail.Categories
+                    //mail.TaskCompletedDate;
+                    MessageBox.Show(String.Format("Mail Task: {0}, Due: {1}", mail.TaskSubject, mail.TaskDueDate.ToShortDateString()));
+                }
+                else if (item is Outlook.ContactItem)
+                {
+                    Outlook.ContactItem contact = item as Outlook.ContactItem;
+                    //contact.Categories
+                    //contact.TaskCompletedDate
+                    MessageBox.Show(String.Format("Contact Task: {0}, Due: {1}", contact.TaskSubject, contact.TaskDueDate.ToShortDateString()));
+                }
+                else if (item is Outlook.TaskItem)
+                {
+                    Outlook.TaskItem task = item as Outlook.TaskItem;
+                    //task.Categories
+                    //task.DateCompleted
+                    MessageBox.Show(String.Format("Task Task: {0}, Due: {1}", task.Subject, task.DueDate.ToShortDateString()));
+                }
+                else
+                {
+                    MessageBox.Show("Unknown type");
+                }
+            }
         }
 
         /// <summary>
-        /// Enables/disables email notifications
+        /// Retrieve all appointments for the current configurations for all stores
-        /// </summary>
-        /// <param name="sender">Sender</param>
-        /// <param name="e">EventArgs</param>
-        private void chkMailAlerts_CheckedChanged(object sender, EventArgs e)
-        {
-            Properties.Settings.Default.MailAlertsEnabled = this.chkMailAlerts.Checked;
-        }
-
-        /// <summary>
-        /// Retrieve all appointments for the current configurations
         /// </summary>
         public void RetrieveAppointments()
         {
+            //foreach (Outlook.Store store in Globals.ThisAddIn.Application.Session.Stores)
             // Get the Outlook folder for the calendar to retrieve the appointments
             Outlook.Folder calFolder =
                 Globals.ThisAddIn.Application.Session.GetDefaultFolder(
                 Outlook.OlDefaultFolders.olFolderCalendar)
                 as Outlook.Folder;
-
+            List<Outlook.AppointmentItem> appts = this.RetrieveAppointmentsForFolder(calFolder);
-            int selectedMonth = this.apptCalendar.SelectedDate.Month;
-            int selectedYear = this.apptCalendar.SelectedDate.Year;
-
-            // To get all the appointments for the current month (so it displays nicely bolded even for past events)
-            DateTime start = new DateTime(selectedYear, selectedMonth, 1); // MM-01-YYYY
-            DateTime end = start.AddMonths(1).AddDays(-1); // Last day of the month
-            end = end.AddDays((int)this.numRangeDays.Value); // So we get appointments for the "possible" first days of the next month
-
-            // Get all the appointments
-            Outlook.Items rangeAppts = GetAppointmentsInRange(calFolder, start, end);
-
-            // Get a more manageable list
-            List<Outlook.AppointmentItem> appts = new List<Outlook.AppointmentItem>();
-            if (rangeAppts != null)
-            {
-                foreach (Outlook.AppointmentItem appt in rangeAppts)
-                {
-                    appts.Add(appt);
-                }
-            }
 
             // Highlight dates with appointments in the current calendar
             this.apptCalendar.BoldedDates = appts.Select<Outlook.AppointmentItem, DateTime>(a => a.Start.Date).Distinct().ToArray();
 
             // Now display the actual appointments below the calendar
             DateTime startRange = this.apptCalendar.SelectedDate;
-            DateTime endRange = startRange.AddDays((int)this.numRangeDays.Value);
+            if (!this.ShowPastAppointments)
+            {
+                startRange = startRange.Add(DateTime.Now.TimeOfDay);
+            }
+            DateTime endRange = startRange.AddDays((int)this.NumDays);
 
             // Get items in range
             var lstItems = appts.Where(a => a.Start >= startRange && a.Start <= endRange);
@@ -186,6 +191,36 @@ namespace Outlook2013TodoAddIn
             this.apptCalendar.UpdateCalendar();
         }
 
+        /// <summary>
+        /// Retrieve all appointments for the current configurations for a specific folder
+        /// </summary>
+        /// <param name="calFolder">Outlook folder</param>
+        /// <returns>List of appointments</returns>
+        private List<Outlook.AppointmentItem> RetrieveAppointmentsForFolder(Outlook.Folder calFolder)
+        {
+            int selectedMonth = this.apptCalendar.SelectedDate.Month;
+            int selectedYear = this.apptCalendar.SelectedDate.Year;
+
+            // To get all the appointments for the current month (so it displays nicely bolded even for past events)
+            DateTime start = new DateTime(selectedYear, selectedMonth, 1); // MM-01-YYYY
+            DateTime end = start.AddMonths(1).AddDays(-1); // Last day of the month
+            end = end.AddDays((int)this.NumDays); // So we get appointments for the "possible" first days of the next month
+
+            // Get all the appointments
+            Outlook.Items rangeAppts = GetAppointmentsInRange(calFolder, start, end);
+
+            // Get a more manageable list
+            List<Outlook.AppointmentItem> appts = new List<Outlook.AppointmentItem>();
+            if (rangeAppts != null)
+            {
+                foreach (Outlook.AppointmentItem appt in rangeAppts)
+                {
+                    appts.Add(appt);
+                }
+            }
+            return appts;
+        }
+
         /// <summary>
         /// Get recurring appointments in a date range.
         /// </summary>
@@ -306,6 +341,25 @@ namespace Outlook2013TodoAddIn
             cv.GoToDate(this.apptCalendar.SelectedDate);
         }
 
+        /// <summary>
+        /// New method to show the configuration form
+        /// </summary>
+        /// <param name="sender">Sender</param>
+        /// <param name="e">EventArgs</param>
+        private void apptCalendar_ConfigurationButtonClicked(object sender, EventArgs e)
+        {
+            using (FormConfiguration cfg = new FormConfiguration())
+            {
+                if (cfg.ShowDialog() == DialogResult.OK)
+                {
+                    this.NumDays = cfg.NumDays;
+                    this.MailAlertsEnabled = cfg.MailAlertsEnabled;
+                    this.ShowPastAppointments = cfg.ShowPastAppointments;
+                    this.RetrieveAppointments();
+                }
+            }
+        }
+
         #endregion "Methods"
     }
 }

Outlook2013TodoAddIn/CustomCalendar.Designer.cs

@@ -28,11 +28,14 @@
         /// </summary>
         private void InitializeComponent()
         {
+            this.components = new System.ComponentModel.Container();
             this.btnPrevious = new System.Windows.Forms.Button();
             this.btnNext = new System.Windows.Forms.Button();
             this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
             this.lnkCurrentRange = new System.Windows.Forms.LinkLabel();
             this.lnkToday = new System.Windows.Forms.LinkLabel();
+            this.btnConfig = new System.Windows.Forms.Button();
+            this.toolTipCalendar = new System.Windows.Forms.ToolTip(this.components);
             this.SuspendLayout();
             // 
             // btnPrevious
@@ -44,6 +47,7 @@
             this.btnPrevious.Size = new System.Drawing.Size(31, 23);
             this.btnPrevious.TabIndex = 0;
             this.btnPrevious.Text = "<";
+            this.toolTipCalendar.SetToolTip(this.btnPrevious, "Previous month");
             this.btnPrevious.UseVisualStyleBackColor = true;
             this.btnPrevious.Click += new System.EventHandler(this.btnPrevious_Click);
             // 
@@ -56,6 +60,7 @@
             this.btnNext.Size = new System.Drawing.Size(31, 23);
             this.btnNext.TabIndex = 2;
             this.btnNext.Text = ">";
+            this.toolTipCalendar.SetToolTip(this.btnNext, "Next month");
             this.btnNext.UseVisualStyleBackColor = true;
             this.btnNext.Click += new System.EventHandler(this.btnNext_Click);
             // 
@@ -97,19 +102,34 @@
             // lnkToday
             // 
             this.lnkToday.LinkBehavior = System.Windows.Forms.LinkBehavior.NeverUnderline;
-            this.lnkToday.Location = new System.Drawing.Point(9, 196);
+            this.lnkToday.Location = new System.Drawing.Point(40, 196);
             this.lnkToday.Name = "lnkToday";
-            this.lnkToday.Size = new System.Drawing.Size(234, 23);
+            this.lnkToday.Size = new System.Drawing.Size(166, 23);
             this.lnkToday.TabIndex = 4;
             this.lnkToday.TabStop = true;
             this.lnkToday.Text = "lnkToday";
             this.lnkToday.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
+            this.toolTipCalendar.SetToolTip(this.lnkToday, "Refresh today\'s appointments");
             this.lnkToday.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.lnkToday_LinkClicked);
             // 
+            // btnConfig
+            // 
+            this.btnConfig.BackgroundImage = global::Outlook2013TodoAddIn.Properties.Resources.gear;
+            this.btnConfig.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Center;
+            this.btnConfig.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
+            this.btnConfig.Location = new System.Drawing.Point(219, 198);
+            this.btnConfig.Name = "btnConfig";
+            this.btnConfig.Size = new System.Drawing.Size(24, 24);
+            this.btnConfig.TabIndex = 5;
+            this.toolTipCalendar.SetToolTip(this.btnConfig, "Configuration");
+            this.btnConfig.UseVisualStyleBackColor = true;
+            this.btnConfig.Click += new System.EventHandler(this.btnConfig_Click);
+            // 
             // CustomCalendar
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.Controls.Add(this.btnConfig);
             this.Controls.Add(this.lnkToday);
             this.Controls.Add(this.lnkCurrentRange);
             this.Controls.Add(this.tableLayoutPanel1);
@@ -130,5 +150,7 @@
         private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
         private System.Windows.Forms.LinkLabel lnkCurrentRange;
         private System.Windows.Forms.LinkLabel lnkToday;
+        private System.Windows.Forms.Button btnConfig;
+        private System.Windows.Forms.ToolTip toolTipCalendar;
     }
 }

Outlook2013TodoAddIn/CustomCalendar.cs

@@ -168,6 +168,7 @@ namespace Outlook2013TodoAddIn
 
             this.btnPrevious.FlatAppearance.MouseOverBackColor = this.HoverBackColor;
             this.btnNext.FlatAppearance.MouseOverBackColor = this.HoverBackColor;
+            this.btnConfig.FlatAppearance.MouseOverBackColor = this.HoverBackColor;
         }
 
         /// <summary>
@@ -504,6 +505,20 @@ namespace Outlook2013TodoAddIn
             }
         }
 
+        /// <summary>
+        /// Event handler to subscribe to
+        /// </summary>
+        public event EventHandler ConfigurationButtonClicked;
+
+        private void btnConfig_Click(object sender, EventArgs e)
+        {
+            EventHandler handler = ConfigurationButtonClicked;
+            if (handler != null)
+            {
+                handler(this, e);
+            }
+        }
+
         /// <summary>
         /// Select today's date in the calendar
         /// </summary>

Outlook2013TodoAddIn/CustomCalendar.resx

@@ -117,4 +117,7 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <metadata name="toolTipCalendar.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
 </root>

Outlook2013TodoAddIn/Forms/FormConfiguration.Designer.cs

@@ -0,0 +1,148 @@
+namespace Outlook2013TodoAddIn.Forms
+{
+    partial class FormConfiguration
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.chkMailAlerts = new System.Windows.Forms.CheckBox();
+            this.lblRangeDays = new System.Windows.Forms.Label();
+            this.numRangeDays = new System.Windows.Forms.NumericUpDown();
+            this.btnCancel = new System.Windows.Forms.Button();
+            this.btnOK = new System.Windows.Forms.Button();
+            this.chkShowPastAppointments = new System.Windows.Forms.CheckBox();
+            ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // chkMailAlerts
+            // 
+            this.chkMailAlerts.AutoSize = true;
+            this.chkMailAlerts.Location = new System.Drawing.Point(59, 134);
+            this.chkMailAlerts.Name = "chkMailAlerts";
+            this.chkMailAlerts.Size = new System.Drawing.Size(143, 21);
+            this.chkMailAlerts.TabIndex = 8;
+            this.chkMailAlerts.Text = "Enable Mail Alerts";
+            this.chkMailAlerts.UseVisualStyleBackColor = true;
+            // 
+            // lblRangeDays
+            // 
+            this.lblRangeDays.AutoSize = true;
+            this.lblRangeDays.Location = new System.Drawing.Point(55, 60);
+            this.lblRangeDays.Name = "lblRangeDays";
+            this.lblRangeDays.Size = new System.Drawing.Size(44, 17);
+            this.lblRangeDays.TabIndex = 7;
+            this.lblRangeDays.Text = "Days:";
+            // 
+            // numRangeDays
+            // 
+            this.numRangeDays.Location = new System.Drawing.Point(115, 58);
+            this.numRangeDays.Maximum = new decimal(new int[] {
+            30,
+            0,
+            0,
+            0});
+            this.numRangeDays.Minimum = new decimal(new int[] {
+            1,
+            0,
+            0,
+            0});
+            this.numRangeDays.Name = "numRangeDays";
+            this.numRangeDays.Size = new System.Drawing.Size(55, 22);
+            this.numRangeDays.TabIndex = 6;
+            this.numRangeDays.Value = new decimal(new int[] {
+            3,
+            0,
+            0,
+            0});
+            // 
+            // btnCancel
+            // 
+            this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
+            this.btnCancel.Location = new System.Drawing.Point(169, 181);
+            this.btnCancel.Name = "btnCancel";
+            this.btnCancel.Size = new System.Drawing.Size(87, 37);
+            this.btnCancel.TabIndex = 11;
+            this.btnCancel.Text = "Cancel";
+            this.btnCancel.UseVisualStyleBackColor = true;
+            // 
+            // btnOK
+            // 
+            this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
+            this.btnOK.Location = new System.Drawing.Point(27, 181);
+            this.btnOK.Name = "btnOK";
+            this.btnOK.Size = new System.Drawing.Size(87, 37);
+            this.btnOK.TabIndex = 10;
+            this.btnOK.Text = "OK";
+            this.btnOK.UseVisualStyleBackColor = true;
+            this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
+            // 
+            // chkShowPastAppointments
+            // 
+            this.chkShowPastAppointments.AutoSize = true;
+            this.chkShowPastAppointments.Location = new System.Drawing.Point(59, 98);
+            this.chkShowPastAppointments.Name = "chkShowPastAppointments";
+            this.chkShowPastAppointments.Size = new System.Drawing.Size(186, 21);
+            this.chkShowPastAppointments.TabIndex = 12;
+            this.chkShowPastAppointments.Text = "Show Past Appointments";
+            this.chkShowPastAppointments.UseVisualStyleBackColor = true;
+            // 
+            // FormConfiguration
+            // 
+            this.AcceptButton = this.btnOK;
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.CancelButton = this.btnCancel;
+            this.ClientSize = new System.Drawing.Size(282, 253);
+            this.Controls.Add(this.chkShowPastAppointments);
+            this.Controls.Add(this.btnCancel);
+            this.Controls.Add(this.btnOK);
+            this.Controls.Add(this.chkMailAlerts);
+            this.Controls.Add(this.lblRangeDays);
+            this.Controls.Add(this.numRangeDays);
+            this.MaximizeBox = false;
+            this.MinimizeBox = false;
+            this.Name = "FormConfiguration";
+            this.ShowIcon = false;
+            this.ShowInTaskbar = false;
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
+            this.Text = "Configuration";
+            this.Load += new System.EventHandler(this.FormConfiguration_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.numRangeDays)).EndInit();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.CheckBox chkMailAlerts;
+        private System.Windows.Forms.Label lblRangeDays;
+        private System.Windows.Forms.NumericUpDown numRangeDays;
+        private System.Windows.Forms.Button btnCancel;
+        private System.Windows.Forms.Button btnOK;
+        private System.Windows.Forms.CheckBox chkShowPastAppointments;
+    }
+}

Outlook2013TodoAddIn/Forms/FormConfiguration.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Outlook2013TodoAddIn.Forms
+{
+    public partial class FormConfiguration : Form
+    {
+        #region "Properties"
+
+        /// <summary>
+        /// Number of days (including today) to retrieve appointments from in the future
+        /// </summary>
+        public decimal NumDays
+        {
+            get { return this.numRangeDays.Value; }
+            set { this.numRangeDays.Value = value; }
+        }
+
+        /// <summary>
+        /// Gets/sets whether mail notifications are enabled or not
+        /// </summary>
+        public bool MailAlertsEnabled
+        {
+            get { return this.chkMailAlerts.Checked; }
+            set { this.chkMailAlerts.Checked = value; }
+        }
+
+        /// <summary>
+        /// Gets/sets whether to show past appointments in the current day or not
+        /// </summary>
+        public bool ShowPastAppointments
+        {
+            get { return this.chkShowPastAppointments.Checked; }
+            set { this.chkShowPastAppointments.Checked = value; }
+        }
+
+        #endregion "Properties"
+        
+        #region "Methods"
+
+        /// <summary>
+        /// Default constructor
+        /// </summary>
+        public FormConfiguration()
+        {
+            InitializeComponent();
+        }
+
+        /// <summary>
+        /// On load, display saved configuration
+        /// </summary>
+        /// <param name="sender">Sender</param>
+        /// <param name="e">EventArgs</param>
+        private void FormConfiguration_Load(object sender, EventArgs e)
+        {
+            this.numRangeDays.Value = Properties.Settings.Default.NumDays;
+            this.chkMailAlerts.Checked = Properties.Settings.Default.MailAlertsEnabled;
+            this.chkShowPastAppointments.Checked = Properties.Settings.Default.ShowPastAppointments;
+        }
+
+        /// <summary>
+        /// Clicking the OK button
+        /// </summary>
+        /// <param name="sender">Sender</param>
+        /// <param name="e">EventArgs</param>
+        private void btnOK_Click(object sender, EventArgs e)
+        {
+            Properties.Settings.Default.NumDays = this.numRangeDays.Value;
+            Properties.Settings.Default.MailAlertsEnabled = this.chkMailAlerts.Checked;
+            Properties.Settings.Default.ShowPastAppointments = this.chkShowPastAppointments.Checked;
+        }
+
+        #endregion "Methods"
+    }
+}

Outlook2013TodoAddIn/Forms/FormRecurringOpen.Designer.cs

@@ -1,4 +1,4 @@
-namespace Outlook2013TodoAddIn
+namespace Outlook2013TodoAddIn.Forms
 {
     partial class FormRecurringOpen
     {

Outlook2013TodoAddIn/Forms/FormRecurringOpen.cs

@@ -1,6 +1,6 @@
 using System.Windows.Forms;
 
-namespace Outlook2013TodoAddIn
+namespace Outlook2013TodoAddIn.Forms
 {
     /// <summary>
     /// Mimic Outlook's popup to open one instance or the whole series

Outlook2013TodoAddIn/Forms/NewMailAlert.Designer.cs

@@ -1,4 +1,4 @@
-namespace Outlook2013TodoAddIn
+namespace Outlook2013TodoAddIn.Forms
 {
     partial class NewMailAlert
     {

Outlook2013TodoAddIn/Forms/NewMailAlert.cs

@@ -9,7 +9,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
-namespace Outlook2013TodoAddIn
+namespace Outlook2013TodoAddIn.Forms
 {
     /// <summary>
     /// New form to display new emai lnotifications

Outlook2013TodoAddIn/Forms/NewMailAlert.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Outlook2013TodoAddIn/Outlook2013TodoAddIn.csproj

@@ -189,16 +189,22 @@
     <Compile Include="CustomCalendar.Designer.cs">
       <DependentUpon>CustomCalendar.cs</DependentUpon>
     </Compile>
-    <Compile Include="FormRecurringOpen.cs">
+    <Compile Include="Forms\FormConfiguration.cs">
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="FormRecurringOpen.Designer.cs">
+    <Compile Include="Forms\FormConfiguration.Designer.cs">
+      <DependentUpon>FormConfiguration.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Forms\FormRecurringOpen.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Forms\FormRecurringOpen.Designer.cs">
       <DependentUpon>FormRecurringOpen.cs</DependentUpon>
     </Compile>
-    <Compile Include="NewMailAlert.cs">
+    <Compile Include="Forms\NewMailAlert.cs">
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="NewMailAlert.Designer.cs">
+    <Compile Include="Forms\NewMailAlert.Designer.cs">
       <DependentUpon>NewMailAlert.cs</DependentUpon>
     </Compile>
     <Compile Include="OutlookHelper.cs" />
@@ -221,10 +227,13 @@
     <EmbeddedResource Include="CustomCalendar.resx">
       <DependentUpon>CustomCalendar.cs</DependentUpon>
     </EmbeddedResource>
-    <EmbeddedResource Include="FormRecurringOpen.resx">
+    <EmbeddedResource Include="Forms\FormConfiguration.resx">
+      <DependentUpon>FormConfiguration.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Forms\FormRecurringOpen.resx">
       <DependentUpon>FormRecurringOpen.cs</DependentUpon>
     </EmbeddedResource>
-    <EmbeddedResource Include="NewMailAlert.resx">
+    <EmbeddedResource Include="Forms\NewMailAlert.resx">
       <DependentUpon>NewMailAlert.cs</DependentUpon>
     </EmbeddedResource>
     <EmbeddedResource Include="Properties\Resources.resx">
@@ -277,6 +286,9 @@
   <ItemGroup>
     <None Include="Images\Envelope.png" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Images\gear.png" />
+  </ItemGroup>
   <PropertyGroup>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
     <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>

Outlook2013TodoAddIn/Properties/Resources.Designer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18033
+//     Runtime Version:4.0.30319.18046
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -90,6 +90,16 @@ namespace Outlook2013TodoAddIn.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap gear {
+            get {
+                object obj = ResourceManager.GetObject("gear", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>

Outlook2013TodoAddIn/Properties/Resources.resx

@@ -127,6 +127,9 @@
   <data name="Flag" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Images\Flag.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="gear" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\images\gear.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
   <data name="todoIcon" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Images\2012-11-20_1546.png;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>

Outlook2013TodoAddIn/Properties/Settings.Designer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18033
+//     Runtime Version:4.0.30319.18046
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -82,5 +82,17 @@ namespace Outlook2013TodoAddIn.Properties {
                 this["MailAlertsEnabled"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("True")]
+        public bool ShowPastAppointments {
+            get {
+                return ((bool)(this["ShowPastAppointments"]));
+            }
+            set {
+                this["ShowPastAppointments"] = value;
+            }
+        }
     }
 }

Outlook2013TodoAddIn/Properties/Settings.settings

@@ -17,5 +17,8 @@
     <Setting Name="MailAlertsEnabled" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">True</Value>
     </Setting>
+    <Setting Name="ShowPastAppointments" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">True</Value>
+    </Setting>
   </Settings>
 </SettingsFile>

Outlook2013TodoAddIn/ThisAddIn.cs

@@ -1,4 +1,5 @@
 using Microsoft.Win32;
+using Outlook2013TodoAddIn.Forms;
 using System;
 using System.Drawing;
 using System.Linq;
@@ -40,6 +41,7 @@ namespace Outlook2013TodoAddIn
 
             this.AppControl = new AppointmentsControl();
             this.AppControl.MailAlertsEnabled = Properties.Settings.Default.MailAlertsEnabled;
+            this.AppControl.ShowPastAppointments = Properties.Settings.Default.ShowPastAppointments; 
             this.AppControl.NumDays = Properties.Settings.Default.NumDays; // Setting the value will load the appointments
             
             ToDoTaskPane = this.CustomTaskPanes.Add(this.AppControl, "Appointments");

Outlook2013TodoAddIn/app.config

@@ -22,6 +22,9 @@
       <setting name="MailAlertsEnabled" serializeAs="String">
         <value>True</value>
       </setting>
+      <setting name="ShowPastAppointments" serializeAs="String">
+        <value>True</value>
+      </setting>
     </Outlook2013TodoAddIn.Properties.Settings>
   </userSettings>
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>