Convert an object to a control, or what?

[Magnus Blomberg]

Hello!

An common issue for me is that I have a web control, double-click it to
reach the event in the code-behind. Then I for example get the code:
protected void CheckBox1_CheckedChanged(Object sender , EventArgs e)

This is good, but if I then want to use the sender as a control, for
instance the methods are not for the Checkbox, but for the Object.
This is quite obvious, but how to solve it?
I can't (or it's not recommended to) write if (sender.Checked == true)...
Should I convert it, and if so, how?

Regards Magnus

 

[Mr Newbie]

Easy

Dim myControlName as ControlTypeLikeTexBoxOrWhaterver

myControlName = DirectCast( sender, ControlTypeLikeTexBoxOrWhaterver )

myControlName.WhateverPropertyYouWantToSetIsNow = "OK"

 

[Mark Monster]

Hello Magnus,

I think it is preferred to first check the type before casting the instance
to another Class.

Regards,

Mark Monster

 

[Magnus Blomberg]

Thanks!
The problem is that this function is VB, and I'm using C#. Do you now
the opposit for C#?

Regards Magnus

 

[S. Justin Gengo]

Magnus,

In C# you use an "Explicit Cast"" so working from the previous example:

ControlTypeLikeTextBoxOrWhatever myControlName;

myControlName = (ControlTypeLikeTextBoxOrWhatever) sender;

myControlName.WhateverPropertyYouWantToSetIsNow = "OK";

--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche