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C# combine 2 events in one method

Tags:

c#

.net

winforms

I am relatively new to programming, as you will soon see...
I have 2 events, which execute the same code. I currently have the following pseudo code for a datagridview:

private void dgv_CellEnter(object sender, DataGridViewCellEventArgs e)  
{
   string abc = "abc";
}

private void dgv_CellClick(object sender, DataGridViewCellEventArgs e)  
{
   string abc = "abc";
}

Is there a way to combine this into one event? Is there a better way to do this?

like image 610
muhan Avatar asked Aug 07 '09 00:08

muhan


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3 Answers

Why not just have one method and map it to two events?

private void dgv_CellEvent(object sender, DataGridViewCellEventArgs e)
{
    string abc = "123";
}

// In the event mapping

dgv.CellEnter += dgv_CellEvent;
dgv.CellClick += dgv_CellEvent;
like image 92
Andrew Shepherd Avatar answered Sep 26 '22 14:09

Andrew Shepherd


Well the quick answer is yes. Put the guts of the methods in its own method and then just have the onclick event call that method. This will give you only one place to update code should it need to change.

There are a 100 different ways to do this, and this is prob the easiest.

So create something like this:

protected void MyNewMethod()
{
    string abc = "123";
}

and then your other methods will just call it like this:

private void dgv_CellEnter(object sender, DataGridViewCellEventArgs e)
{ 
    MyNewMethod(); 
}

private void dgv_CellClick(object sender, DataGridViewCellEventArgs e)
{ 
    MyNewMethod(); 
}

Option 2

Just call the same method from the markup. You really only need one of those methods and the event in the markup can call the same one.

like image 22
YetAnotherDeveloper Avatar answered Sep 24 '22 14:09

YetAnotherDeveloper


In the property window (using C# Express) you can select event handlers in a drop-down, or manually type the name of a method. The signature just has to match. I'm assuming that this is the same in VS.

like image 25
snarf Avatar answered Sep 26 '22 14:09

snarf