Cannot Change Control's Visibility On C# Code

Oct 5, 2010

I want to change controls visibility on c#, but nothing happens. The controls are in an AspxPopupControl and 3 of them are hidden in design time, 1 of them is visible. I use this code to visible them

if (paramType == "Grup")
{
gv_Answers.Visible = false;
trlGroup.Visible = true;
chkShowItems.Visible = true;
}
else
{
gv_Answers.Visible = true;
trlGroup.Visible = false;
chkShowItems.Visible = false;
}

This code is in a CustomCallBack event of a gridview. So i don't know what to do from this point. It's an easy task but i couldn't handle it.

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