Gridview PageIndexChanging not Firing

Question

I am writing my own event handler for GridView in PageIndexChanging event, I didn't explicit set the DataSourceID for my GridView, here is my code:

Code for GridView data binding:

protected void DetailsView_DataBound (object sender, EventArgs e ) 
{
    Customer cust = (Customer)DetailsView.DataItem;
    this.GridView.DataSource = cust.Orders;
    this.GridView.DataBind();
}

This part of the code allows me to show order details in GridView when data bound with DetailsView. Then I write my own GridView_PageIndexChanging event handler and DOES NOT work for me:

protected void GridView_PageIndexChanging(object sender, EventArgs e)
{
    GridView.PageIndex = e.NewPageIndex();
    GridView.DataBind();
}

If I click the next page number, the website shows nothing. But if I change GridView.DataBind() to DataBind() The paging works.

Anyone has any idea why the second Databind method works and what is the reason?

Answer 1

the second databind is DataBind(Page.DataBind) which refrence to current page binds all page controls and its child controls.

Answer 2

Have you set allowPaging="True" of gridview. if not then set it to true.