VS 2010 - Populate DropDownList Inside GridView

Dec 3, 2013

I am trying to populate (bind with a dataset) a DropDownList inside a GridView. However, when I do my DropDownList.DataSource = dataSet.. I get the following exception ( Object reference not set to an instance of an object. )

Here is my GridView in the .aspx page:

AllowPaging="True" EnableViewState="False">

Here is the code behind...

Private Sub gvTransferNumbersEN_RowDataBound(sender As Object, e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvTransferNumbersEN.RowDataBound

If (e.Row.RowType = DataControlRowType.DataRow) Then
Dim dsGetTransferNumbers As DataSet
Dim ddlTransferNumbers As DropDownList = DirectCast(e.Row.FindControl("ddlTransferNumbers"), DropDownList)

[code]....

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