I have a GridView that has a DataSourceID pointing to an ObjectDataSource. The ObjectDataSource points to a method that returns a LINQ IQueryable by using the TypeName, SelectMethod, and SelectCountMethod properties of the ObjectDataSource control. What happens is that the data loads properly upfront. However, on postback, if I remove the rows from the GridView and try to rebind using the explicit GridView.DataBind(), it doesn't work. I know LINQ is returning the proper rowcount and such because I've called the countmethod and it returns the proper rowcount. Here's a quick example:
<asp:GridView ID="TestGridView" runat="server" PageSize="20"
<asp:ObjectDataSource ID="TestDataSource" runat="server"
SelectMethod="GetDetails" TypeName="MyApp.PageClass" />
I've tried adding a button and adding the TestGridView.DataBind(); method to that. I've tried adding it to the Page_PreRender event. No matter what I try, it's not working.
As someone suggested below, I've tried moving it to Page_Load as well, and no go. Here's a rough example of my code:
protected void Page_Load(object sender, EventArgs e)
// Set "initial" query parameters, then ...
private void BindData()
// EDITED: Removed the code below since I'm not looking to delete the
// rows from the database, but rather get the GridView to rebind
// which its not.
////Remove all current rows from the GridView
//int colCount = TestGridView.Rows.Count;
//for (int x = 1; x <= colCount; x++)
// Bind GridView to the ObjectDataSource
protected void RegenerateImageButton_Click(object sender, ImageClickEventArgs e)
// Set "updated" query parameters, then ...