C#-APP: I am having a problem with removing event handlers

[khalid galal]

Hi, i am having a problem with removing event handlers, it is when creating nested event handlers (an event handler raising another event handler) where a part of the code is
private void toolStripButton 1_Click(object sender, EventArgs e)
{
this.MouseDown += new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseDown);
}
private void Form1_MouseDown (object sender, MouseEventArgs e)
{
this.MouseUp += new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseUp);
}
////////////////////////////////////////////////
so, when i say

this.MouseDown -= new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseDown);

this.MouseUp -= new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseUp);
////////////////////////////////////////////////
what happens is the event handler which is "this.MouseDown "
only is removed and the other event handler which is
"this.Mouse Up" doesn't remove.
Thanks...

[Plater]

Why are you adding and removing event handlers?
If you wanted to control when an event handler should do it's work, couldn't you just set a boolean value true/false?

[khalid galal]

Thanks, for your answer and help.
I tried your suggestion before i post the question and it has a disadvantage which is it makes the application a bit slowly, so i want something to pause or remove them, thanks.

[khalid galal]

Hi, i am having a problem with removing event handlers, it is when creating nested event handlers (an event handler raising another event handler) where a part of the code is
private void toolStripButton 1_Click(object sender, EventArgs e)
{
this.MouseDown += new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseDown);
}
private void Form1_MouseDown (object sender, MouseEventArgs e)
{
this.MouseUp += new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseUp);
}
////////////////////////////////////////////////
so, when i say

this.MouseDown -= new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseDown);

this.MouseUp -= new System.Windows. Forms.MouseEven tHandler(this.F orm1_ MouseUp);
////////////////////////////////////////////////
what happens is the event handler which is "this.MouseDown "
only is removed and the other event handler which is
"this.Mouse Up" doesn't remove.
Thanks...

[Plater]

Please don't double post your questions, it's against the posting guidelines.
MODERATOR


The reason I suggest that you don't add/remove event handlers like that is because I believe you are accidently adding more then one identical handler to the events.
Then when you remove them only one of them is getting removed.
Stick some code in there to display a message in each handler and see if any of them ever double up?