How to add an event to a UserControl in C#?

Question

I have a UserControl which contains 3 labels. I want to add an event for it, which occurs when the text of one of the labels changed.
I am using Visual Studio 2010

Answer 1

There is a very simple way to do that!

On the UserControl Form :

1. change properties to public to access everywhere

on the main form , where you are using UserControl:

.5: in the using region add using userControl1=UserControl.userControl1

1.Add 'Laod' event to your UserControl :

this.userControl1.Load += new System.EventHandler(this.userControl1_Load);

2.In the userControl1_Load :

private void userControl1_Load(object sender, EventArgs e)
{
     (sender as UserControl1).label1.TextChanged += label1_TextChanged; 
     //add a 'TextChanged' event to the label1 of UserControl1 
     OR use direct cast:
     ((UserControl1) sender).label1.TextChanged += label1_TextChanged;

}

3.In th label1_TextChanged:

 private void label1_TextChanged(object sender, EventArgs e)
 {
     //do whatever you want
 }