disable usercontrol on the load of master page

Question

I am using master page on some pages. And that master page is loading the user control. So I want to disable or enable user control on some page load which has master page.

Answer 1

You want to disable it on the child page? You could do something like this in the Page_Load() method:

if (null != this.Master)
{
    userControl.Enabled = false;
}

Answer 2

Is there anyway can I disable User control on master page Page_load()

Answer 3

Your question is kinda hard to understand, but i think what you are looking for is something like this:

public partial class Site1 : System.Web.UI.MasterPage
{
 protected void Page_Load(object sender, EventArgs e)
 {
  if (Page is WebForm1 || Page is WebForm2)
  {
   webUserControl11.Visible = false;
  }
 }
}

Alternatively you could implement an interface on the pages that indicates this behavior. Something along the lines:

public partial class Site1 : System.Web.UI.MasterPage
{
 protected void Page_Load(object sender, EventArgs e)
 {
  ISpecialPage specialPage = Page as ISpecialPage;

  if (specialPage != null && specialPage.ShouldDisableUserControl)
   webUserControl11.Visible = false;
 }
}

public interface ISpecialPage
{
 bool ShouldDisableUserControl { get; }
}

Answer 4

Master Page_load() { // checking some condition if true ctrlname.visible = true; }

but the problem is I m not able to get the instance of user ctrl , in short ctrlname is null all the time.

Answer 5

The user control is not declared as a local variable in the MasterPage. You need to use the FindControl() function to get a reference to the control.

Here's a working example:

Dim userControl As WebControl = ContentPlaceHolder1.FindControl("someControl")
If userControl IsNot Nothing Then
   CType(userControl, WebControl).Enabled = False
End If