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| Fredrik |
| GOOD ANSWER |
Hi,
I have the following problem.
I'm trying to create a dynamic ContextMenu (used by a NotifyIcon), but when I repopulate the submenus the submenus won't show. the little arrow is there - indicating that there are submenues available - but they won't popup.
On the ContextMenu objects Popup eventhandler i have the routine that populates/repopulates the submenus.
The submenues is populated like this:
menuConnect.MenuItems.Clear();
menuDisconnect.MenuItems.Clear();
string[] names = reg.GetSubKeyNames();
for (int i=0; i<names.Length; i++) {
if (names[i].ToLower().Equals("startup") || names[i].ToLower().Equals("")) continue;
menuConnect.MenuItems.Add(new MenuItem(names[i], new EventHandler(menuConnect_Click)));
menuDisconnect.MenuItems.Add(new MenuItem(names[i], new EventHandler(menuDisconnect_Click)));
}
where menuContent and menuDisconnect are menuitems added to the contextMenu in design-time.
Any help is appriciated. I've run out of ideas on how to solve this.
The menu "looks" like this:
Exit
Settings
------ (break)
Connect
- Submenu to Connect here
Disconnect
- Submenu to Disconnect here
// Fredrik
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| Mike in Paradise |
| GOOD ANSWER |
You are trying to assign the same menu item name to both connect and disconnect.. See your code modified in this pop up routine
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace ContextMEnuOnFly
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.ContextMenu contextMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuConnect;
private System.Windows.Forms.MenuItem menuDisconnect;
private System.Windows.Forms.Label label1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (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.contextMenu1 = new System.Windows.Forms.ContextMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.menuConnect = new System.Windows.Forms.MenuItem();
this.menuDisconnect = new System.Windows.Forms.MenuItem();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// contextMenu1
//
this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem2,
this.menuConnect,
this.menuDisconnect});
this.contextMenu1.Popup += new System.EventHandler(this.contextMenu1_Popup);
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.Text = "Exit";
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.Text = "-";
//
// menuConnect
//
this.menuConnect.Index = 2;
this.menuConnect.Text = "Connect";
//
// menuDisconnect
//
this.menuDisconnect.Index = 3;
this.menuDisconnect.Text = "Disconnect";
//
// label1
//
this.label1.Location = new System.Drawing.Point(64, 56);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(100, 72);
this.label1.TabIndex = 0;
this.label1.Text = "Right Click for your menu...";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.ContextMenu = this.contextMenu1;
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void contextMenu1_Popup(object sender, System.EventArgs e)
{
menuConnect.MenuItems.Clear();
menuDisconnect.MenuItems.Clear();
string[] names = new String[] {"Option1","Option2","Option3"};
for (int i=0; i<names.Length; i++)
{
if (names[i].ToLower().Equals("startup") || names[i].ToLower().Equals("")) continue;
menuConnect.MenuItems.Add(new MenuItem(names[i]+"C", new EventHandler(menuConnect_Click)));
menuDisconnect.MenuItems.Add(new MenuItem(names[i]+"D", new EventHandler(menuDisconnect_Click)));
}
}
private void menuConnect_Click(object sender, EventArgs e)
{
this.label1.Text = ((MenuItem)sender).Text;
}
private void menuDisconnect_Click(object sender, EventArgs e)
{
this.label1.Text = ((MenuItem)sender).Text;
}
}
}
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| Fredrik |
| GOOD ANSWER |
Thanks for your reply, but it didn't make any difference.
It will show the menu after the first population, but when I've cleared the menu and repopulated it it will not show again.
// Fredrik
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| PocketNerd |
| GOOD ANSWER |
Hi Fredrik,
Try deleting the top level menu items and then add them again so, in your menu structure ...
The menu "looks" like this:
Exit
Settings
------ (break)
Connect
- Submenu to Connect here
Disconnect
- Submenu to Disconnect here
1) Delete the Connect and Disconnect menu items
2) Create new Menu Items for Connect and Disconnect
3) Add the sub-menu items to the Connect and Disconnect
4) Add the Connect and Disconnect menu items back to the main menu.
e.g.
menuConnect.MenuItems.Clear();
menuDisconnect.MenuItems.Clear();
// Remove menuConnect
// Remove menuDisconnect
// Create new menuConnect
menuConnect = new MenuItem( "Connect" ); // etc
// Create new menuConnect
menuDisconnect = new MenuItem( "Disconnect" ); // etc
string[] names = reg.GetSubKeyNames();
for (int i=0; i<names.Length; i++) {
if (names[i].ToLower().Equals("startup") || names[i].ToLower().Equals("")) continue;
menuConnect.MenuItems.Add(new MenuItem(names[i], new EventHandler(menuConnect_Click)));
menuDisconnect.MenuItems.Add(new MenuItem(names[i], new EventHandler(menuDisconnect_Click)));
I am not sure why but i had exactly the same problem and this worked fine :s
HTH
RS
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| Fredrik |
| GOOD ANSWER |
Thanks, that worked.
But can someone explain why it has to be done this way?
// Fredrik
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| Igal Nassi |
| GOOD ANSWER |
Yes please. I would appreciate an explaination on this too!
I am beginning to get fed up with these silly problems that take ages to find out. Why do people in Microsoft don't have a clear bug database where you can browse all the classes and see the endless bugs!
Regards...
--------------------------------
From: Igal Nassi
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| M M |
| GOOD ANSWER |
(Type your message here)
--------------------------------
From: M M
Hi, I'm experience the same problem. It is a known microsoft problem. There is an easier workaround.
You need to toggle the visibility property (of the menu to which you are adding a new one to) to false and then true.
For more info, go to msdn.microsoft.com and search for the following article:
Microsoft Knowledge Base Article - 814636
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| Paul McEwan |
| GOOD ANSWER |
You don't actually have to remove and add the menu items.
Simply make set the parent menu's visible property to false and then back to true again. This seems to refresh it.
I wonder if anyone's reported this to Microsoft?
--------------------------------
From: Paul McEwan
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