NET AJAX and its functionality to Insert/Update/Delete content items.
First we need to create a template for our custom control.
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It is still your responsibility to properly construct a data source object and assign it to the Rad Grid's Data Source property.
Important: You should never call the Rebind () method in a Need Data Source event handler.
Each time I struggle to remember the resolution from last time but keep forgetting.
Assumption: An event handler for the event Need Data Source has been properly subscribed.i.e.: Markup: Answer:make the datasource of the grid null before calling rebind.i.e. If you place a break point in your existing Need Data Source event handler, you will notice that it gets called before you explicitly call Rebind. Data Source property within the Need Data Source event.Rad Grid does not fire the Need Data Source event unless Rad Grid is visible (Visible=True). Grid Need Data Source Event Args) Handles Rad Grid1. In a Need Data Source event handler, you should prepare the data source (list of objects) for Rad Grid and assign it to the grid's Data Source property: Protected Sub Rad Grid1_Need Data Source(By Val source As Object, By Val e As Telerik. Need Data Source Dim Conn String As String = Configuration Manager. Connection String Dim conn As Sql Connection = New Sql Connection(Conn String) Dim adapter As Sql Data Adapter = New Sql Data Adapter adapter. See following two scenarios offer possible approaches to dynamically create a Rad Grid that ensure that Rad Grid will behave normally. Detail Table Data Bind = new Grid Detail Table Data Bind Event Handler(this. You can create the Rad Grid instance and the grid structure in the Page. Then the instance of Rad Grid is added to the controls collection of the Page. Need Data Source = new Grid Need Data Source Event Handler(this. If, at the time of the event, the Data Source property is not set to a valid data source object, the grid will not behave correctly.