Public Shared Function GetPostBackControl(ByVal page As Page) As Control
Dim res As Control = Nothing
Dim ctrlName As String = Page.Request.Params.Get("__EVENTTARGET")
If ctrlName IsNot Nothing And ctrlName <> "" Then
res = page.FindControl(ctrlName)
Else
Dim c As Control = Nothing
For Each ctl As String In page.Request.Form
c = page.FindControl(ctl)
If TypeOf (c) Is WebControls.Button Then
res = c
Exit For
End If
Next
End If
Return res
End Function
Si usa così:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim coso As Control = GetPostBackControl(Me)
If coso.ID = "xxx" Then
' fai qualcosa...
End If
End Sub
Testato sui Button.
Trovato qui.
