I've been working on an application which has a NotifyIcon (system tray
icon), and a corresponding ContextMenu. I want to be able to update this
menu dynamically. However, when I make changes to the menu, it seems to
disappear. This only breaks when the context menu is tied to a NotifyIcon -
not to any other control.
Below is a C# file for a form which should illustrate this (at least it does
on my machine!). The same contextmenu is tied to the NotifyIcon and the
button on the form. Same function is used to update the menu. Note - you
will need an icon included in the project as an Embedded Resource (I called
mine "testIcon.ico") .
Anyone have any idea how I can get the menu to behave when tied to the
NotifyIcon?
Thanks,
Derrick
---Form1.cs (sorry for lack of formatting)---
using System;
using System.Drawing;
using System.Collecti ons;
using System.Componen tModel;
using System.Windows. Forms;
using System.Data;
namespace WindowsApplicat ion1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows. Forms.Form
{
private System.Windows. Forms.Button button1;
private System.Windows. Forms.ContextMe nu contextMenu1;
private System.Windows. Forms.MenuItem menuItem1;
private System.Windows. Forms.MenuItem menuItem2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.Componen tModel.Containe r components = null;
private NotifyIcon myTrayIcon;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeCompo nent();
//
// TODO: Add any constructor code after InitializeCompo nent call
//
myTrayIcon = new NotifyIcon();
myTrayIcon.Visi ble = true;
myTrayIcon.Text = "Cathexis Web Uploader";
myTrayIcon.Cont extMenu = this.contextMen u1;
myTrayIcon.Icon = new
Icon(System.Ref lection.Assembl y.GetExecutingA ssembly().GetMa nifestResourceS t
ream("WindowsAp plication1.test Icon.ico"));
LoadMenuItems(" ");
}
private void LoadMenuItems(s tring selectedItemTex t)
{
this.menuItem1. MenuItems.Clear ();
MenuItem miSelected;
//Create the currently selected item
if(selectedItem Text == "")
{
miSelected = new MenuItem("(none )");
}
else
{
miSelected = new MenuItem(select edItemText); //don't need event handler for
this one
miSelected.Chec ked = true;
}
menuItem1.MenuI tems.Add(miSele cted);
//Add a seperator
menuItem1.MenuI tems.Add(new MenuItem("-"));
//Add the History items
//This would actually come from a seperate class
string[] historyList = GetHistoryItems ();
foreach(string s in historyList)
{
if(selectedItem Text != s) //weed out duplicates
menuItem1.MenuI tems.Add(new MenuItem(s, new
EventHandler(Su bMenuItem_Click )));
}
}
private void SubMenuItem_Cli ck(object sender, EventArgs e)
{
MenuItem mi = (MenuItem)sende r;
LoadMenuItems(m i.Text);
}
private string[] GetHistoryItems ()
{
return new string[]{"History1", "History2", "History3"} ;
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
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 InitializeCompo nent()
{
this.button1 = new System.Windows. Forms.Button();
this.contextMen u1 = new System.Windows. Forms.ContextMe nu();
this.menuItem1 = new System.Windows. Forms.MenuItem( );
this.menuItem2 = new System.Windows. Forms.MenuItem( );
this.SuspendLay out();
//
// button1
//
this.button1.Co ntextMenu = this.contextMen u1;
this.button1.Lo cation = new System.Drawing. Point(104, 112);
this.button1.Na me = "button1";
this.button1.Ta bIndex = 0;
this.button1.Te xt = "button1";
//
// contextMenu1
//
this.contextMen u1.MenuItems.Ad dRange(new System.Windows. Forms.MenuItem[] {
this.menuItem1,
this.menuItem2} );
//
// menuItem1
//
this.menuItem1. Index = 0;
this.menuItem1. Text = "Test1";
//
// menuItem2
//
this.menuItem2. Index = 1;
this.menuItem2. Text = "Test2";
//
// Form1
//
this.AutoScaleB aseSize = new System.Drawing. Size(5, 13);
this.ClientSize = new System.Drawing. Size(292, 273);
this.Controls.A dd(this.button1 );
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayo ut(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run (new Form1());
}
}
}
---END OF FORM1.cs --
icon), and a corresponding ContextMenu. I want to be able to update this
menu dynamically. However, when I make changes to the menu, it seems to
disappear. This only breaks when the context menu is tied to a NotifyIcon -
not to any other control.
Below is a C# file for a form which should illustrate this (at least it does
on my machine!). The same contextmenu is tied to the NotifyIcon and the
button on the form. Same function is used to update the menu. Note - you
will need an icon included in the project as an Embedded Resource (I called
mine "testIcon.ico") .
Anyone have any idea how I can get the menu to behave when tied to the
NotifyIcon?
Thanks,
Derrick
---Form1.cs (sorry for lack of formatting)---
using System;
using System.Drawing;
using System.Collecti ons;
using System.Componen tModel;
using System.Windows. Forms;
using System.Data;
namespace WindowsApplicat ion1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows. Forms.Form
{
private System.Windows. Forms.Button button1;
private System.Windows. Forms.ContextMe nu contextMenu1;
private System.Windows. Forms.MenuItem menuItem1;
private System.Windows. Forms.MenuItem menuItem2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.Componen tModel.Containe r components = null;
private NotifyIcon myTrayIcon;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeCompo nent();
//
// TODO: Add any constructor code after InitializeCompo nent call
//
myTrayIcon = new NotifyIcon();
myTrayIcon.Visi ble = true;
myTrayIcon.Text = "Cathexis Web Uploader";
myTrayIcon.Cont extMenu = this.contextMen u1;
myTrayIcon.Icon = new
Icon(System.Ref lection.Assembl y.GetExecutingA ssembly().GetMa nifestResourceS t
ream("WindowsAp plication1.test Icon.ico"));
LoadMenuItems(" ");
}
private void LoadMenuItems(s tring selectedItemTex t)
{
this.menuItem1. MenuItems.Clear ();
MenuItem miSelected;
//Create the currently selected item
if(selectedItem Text == "")
{
miSelected = new MenuItem("(none )");
}
else
{
miSelected = new MenuItem(select edItemText); //don't need event handler for
this one
miSelected.Chec ked = true;
}
menuItem1.MenuI tems.Add(miSele cted);
//Add a seperator
menuItem1.MenuI tems.Add(new MenuItem("-"));
//Add the History items
//This would actually come from a seperate class
string[] historyList = GetHistoryItems ();
foreach(string s in historyList)
{
if(selectedItem Text != s) //weed out duplicates
menuItem1.MenuI tems.Add(new MenuItem(s, new
EventHandler(Su bMenuItem_Click )));
}
}
private void SubMenuItem_Cli ck(object sender, EventArgs e)
{
MenuItem mi = (MenuItem)sende r;
LoadMenuItems(m i.Text);
}
private string[] GetHistoryItems ()
{
return new string[]{"History1", "History2", "History3"} ;
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
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 InitializeCompo nent()
{
this.button1 = new System.Windows. Forms.Button();
this.contextMen u1 = new System.Windows. Forms.ContextMe nu();
this.menuItem1 = new System.Windows. Forms.MenuItem( );
this.menuItem2 = new System.Windows. Forms.MenuItem( );
this.SuspendLay out();
//
// button1
//
this.button1.Co ntextMenu = this.contextMen u1;
this.button1.Lo cation = new System.Drawing. Point(104, 112);
this.button1.Na me = "button1";
this.button1.Ta bIndex = 0;
this.button1.Te xt = "button1";
//
// contextMenu1
//
this.contextMen u1.MenuItems.Ad dRange(new System.Windows. Forms.MenuItem[] {
this.menuItem1,
this.menuItem2} );
//
// menuItem1
//
this.menuItem1. Index = 0;
this.menuItem1. Text = "Test1";
//
// menuItem2
//
this.menuItem2. Index = 1;
this.menuItem2. Text = "Test2";
//
// Form1
//
this.AutoScaleB aseSize = new System.Drawing. Size(5, 13);
this.ClientSize = new System.Drawing. Size(292, 273);
this.Controls.A dd(this.button1 );
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayo ut(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run (new Form1());
}
}
}
---END OF FORM1.cs --
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