Develop Reference

Add a function to contextMenu item at notifyIcon

I use an contextMenu1 and an notifyIcon1 for the app. When the app is in Tray Icon and I will press Right Click, a menu will appear.
The code is this (I add only 2 items for test):
contextMenu1.MenuItems.Add("View");
contextMenu1.MenuItems.Add("Exit");
notifyIcon1.ContextMenu = contextMenu1;
In this moment, in the menu I see only the items that don't do enything.
How I can add a function, like private void exit() to the contextMenu1.MenuItems.Add("Exit"). When I will pres the Exit item, to close my app (example).

There is a second parameter to Add that lets you assign an eventhandler:
contextMenu1.MenuItems.Add("Exit", ExitApplication);
// or using an anonymous method:
contextMenu1.MenuItems.Add("Exit", (s,e) => Application.Exit());
In the first example, ExitApplication is your event handler:
private void ExitApplication(object sender, EventArgs e)
{
// exit..
}
You can also construct a MenuItem first and assign the eventhandler in the constructor, if you prefer.

I am assuming that you have a Windows Form and a Button (name : btnShowMessage). When you dobule click on the button you will get a event handler "btnShowMessage_Click". Also you have a notificationIcon with ContextMenuStrip attached with it. You have even an menu option in the context menu strip (name : btnContextOpenMsg). With The following steps you can use to achieve your requirement.:
Below image is for your clear understanding :
Go to Context Menu --> select btnContextOpenMsg
Press F4 to open the property sheet
Click on "Events" button on top of the property sheet
Click on "Click" and expend the drop down beside the click event by clicking "..."
Select the btnShowMessage_Click from the drop down.
Compile you code after saving it.
You should see your notification (system tray) menu when you minimized your app.
Click on the "Show Message" option so that it will execute the same function as for the button.

c# menuStrip_ItemClicked

which event to use to get the menu strip item clicked?
I've tried the menuStrip_ItemClicked event of the menuStrip; but it fires only on the top menus only ( like "File", "Edit", "Windows").
I want to catch the sub menu items clicked event.
Thanks.

If you are talking about WindowsForms and use VisualStudio:
Go to design of your menu, rigth click on menu item you want, select properties, in property grid select events tab, select Click or MenuClick (don't remember precisely) event and double click on it.
Done

I think you should hook to click event of each ToolStripMenuItem. It can be the done with the same event handler if you prefer to have logic for it in one function.

Every subitem has its own event for clicking. In the winforms designer, you can just double click on the correct item you want to let happen. It will create a saveButton_clicked event or whatever event you would like and you can specify the information for that specific action in the method.
You can even let the shortcut commands work like CTRL+S when assigning them in the designer of visual studio.

How to change Event properties & create new events in C# .NET

I'm using NotifyIcon (System tray icon) in my WinForms application. I also have a ContextMenuStrip assigned to it. When user right clicks on NotifyIcon this ContextMenuStrip pops up.
These are the only events that NotifyIcon has.
Click
DoubleClick
MouseClick
MouseDoubleClick
MouseDown
MouseMove
MouseUp
This contextMenuStrip items (ToolStripMenuItem) are dynamically generated. I mean there are few default items like 'About','Exit','Help' etc.. but other items are dynamically generated and inserted into this menu when user right clicks on it. I'm generating items and inserting into contextMenuStrip in Click event handler
Now, I've two problems:
Problem is for an instant its showing the default menustrip and then my Click event handler executes and new update menu pops up. How can I avoid this? I don't want to see the default menu at all. In other words I need to override the default behavior.
Other problem is since I'm handling the Click event (because I didn't find RightClick event) the left button click also is handled by the same handler. I want to do different things (like show application windows) on left click and show dynamically generated contextMenuStrip on right click. How to acheive this?
Why are there two different events like Click & MouseClick? What else would we click with? Aren't these two interdependent. I mean when ever there is a MouseClick there is also a Click.
If you can point me to some examples. That would be great!

Item #1) The ContextMenuStrip has events that allows you to handle any dynamic creation of menu items before the menu is displayed. See the Opening and Opened events.
Item #2) Use the MouseEventArgs parameter to inspect the mouse-state when event was raised.
Item #3) Depending on the control, Click and MouseClick can be different. Take buttons for instance. When a button has focus, the "Click" event is raised when the user presses the Space or Enter key. In most cases, a MouseClick generates a Click event.

I'm the OP. I guess I've achieved it.
notifyIcon.MouseDown += new MouseEventHandler(notifyIcon_MouseDown);
and
static void notifyIcon_MouseDown(object sender, MouseEventArgs e)
{
NotifyIcon notifyIcon = sender as NotifyIcon;
if (e.Button == MouseButtons.Left)
{
MessageBox.Show("Left Button Clicked"); // & do what ever you want
}
else
{
updateMenuItems(notifyIcon.ContextMenuStrip);
}
}

C# WinForm MenuStrip Event doesn't seem to fire

I don't do much WinFom development so I am not too familiar with the MenuStrip control. I have added a menu strip to my form and added (1) item to it. All of this was done using the designer.
So I have Utilities -> Download Utility. When I double click on 'Download' in the designer an event handler is created for me.
private void downloadUtilityToolStripMenuItem_Click(object sender, System.EventArgs e)
{
MessageBox.Show("Ding!");
}
UPDATE:
I noticed that the IntializeComponent() in the constructor of my form never seems to be run. I have placed a breakpoint in the constructor and it never hits. I refactored this form to change the name from the default (form1) to 'main'. I assume this is the problem but I don't see why. All of the form1 references seemed to have been updated. I did this with the IDE.
When I debug this application I can never seem to get this event to fire. What am I missing here?
-Nick

Check on the property page of the menu item (under events - click the lightning icon) if the Click event has a handler.

Check:
Properties Window for the menu, click on the menu item in question for the 'Download'
Click on the 'Lightening Bolt', a small icon below the top of the Properties Window, if you were to mouse over it, it would display 'Events' in the tooltip.
Scroll down and look for the 'Click Event' under Actions, double click it, to let VS automatically fill in the event handler for you
OR
Double click on the menu item within the Forms Designer, that will default to the menu item's click event and fill in the code for the 'Download' Menu item, i.e. MessageBox.Show("Ding");
Hope this helps,
Best regards,
Tom.

I got it working. Apparently when debugging the project it wasn't rebuilding. After refactoring the name of my form it was necessary to 'Rebuild' the solution. Now all over my events work as they should. Thanks for the help.

Explicitly Prevent ContextMenuStrip from Loading in C#

I have a requirement to hide the contextmenustrip when a particular flag is not set. As i don't think we can explicitly control the show/hide of the context menu strip, i decided to trap the right mouse button click on the control with which the contextmenustrip is associated. It is a UserControl, so i tried handling it's MouseClick event inside which i check if the flag is set and if the button is a right button. However to my amazement, the event doesn't get fired upon Mouse Right Click, but fires only for Left Click.
Is there any thing wrong with me or is there any workaround?
RIGHT CLICK IS GETTING DETECTED, Question TITLE and Description Changed
After Doing some more research, i got the rightclick to fire, when i Handled the Mouse_Down Event on the Control. However Am still clueless, as how to explicitly prevent the ContextMenuStrip From Loading. Another question being, why MouseClick didn't detect Right Button Click?
Current WorkAround
Registering the event handler
userControl1.Control1.MouseDown += new MouseEventHandler(Control1_MouseDown);
void Control1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right && flag == false)
{
userControl1.Control1.ContextMenuStrip = null;
}
else
{
userControl1.Control1.ContextMenuStrip = contextMenuStrip1;
}
}
this is the current workaround i'm doing.
But how can i change it in the Opening Event of the ContextMenuStrip

Your solution will fail anyway when the context menu is invoked with the context menu key (or what it's called) on the keyboard. You can use the Opening event to cancel the opening of a context menu.

There is a work around.
Lets say Menu Item A sets the flag that controls the context menu on control B.
In the click event for A, you set b.ContextMenu = nothing to switch it off, and set b.ContextMenu back to the context menu control to switch it back on.

In WinForms there's also the Click event - which does get fired for a right mouse click.
If you are using WPF you should have MouseRightButtonDown and MouseRightButtonUp events.
Check out the table on this MSDN page which lists which controls raise which click events. Significantly, Button, CheckBox, RichTextBox and RadioButton (and a few others) don't raise and event on right click.