PageIndexChanging Event problem in GridView in UserControl

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I have a GridView Control in a UserControl. AllowPaging=True. The data source is assigned in page where the control is used, after declaring a Page.DataSource as public property. when i set the page.datasource property, I also call GridView.DataBind. Databinding works fine and data is displayed correctly.

OnPageIndexChanging event is handled by setting GridView.PageIndex=e.NewPageIndex. I am not binding the data after this, coz when I do that, no data is displayed in the grid at all.

But, when I click a page index (say 3) in a page where the control is used, the gridview page does not change. If i click another page index (say 7), then the grid navigates to the previous index (that is, 3)!

I put break points and found that the GridView_PageIndexChanging event is handled twice, but with correct index selected in the pager in each occasion. Otherwise, no error messages or other significant observations.

Can anyone help me resolve this?

Posted 16-Feb-13 6:48am

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Bandi Ramesh · Answer 1 · 2013-02-16T06:56:00

verify whether your event is already fired or not

C#

public partial class MyUserControl : UserControl
{
    private bool hadLoaded;
 
    public MyUserControl()
    {
        InitializeComponent();
 
        this.Loaded += delegate
        {
            if (!this.hadLoaded)
            {
                Console.WriteLine("Loaded");
                this.hadLoaded = true;
            }
        };
    }
}

Reference:
http://social.msdn.microsoft.com/forums/en-US/wpf/thread/97e1256c-02c6-48dc-a8f8-c00bd1931b89[^]