CS1061: 'webform1_aspx' does not contain a definition for 'GridView1_SelectedIndexChanged' and no extensionmethod 'GridView1_SelectedIndexChanged' accepting a first argument of type 'webform1_aspx' could be源错误:
Line 17:
Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim cf As CommandField = New CommandField()
Dim df As CommandField = New CommandField