Registering Asynchronous Post-back Control that is in repeater

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I have tried to register textboxes that are in a repeater to do asynchronous post-back by handling DataItemBound for the repeater:

VB

Protected Sub rptExtraFees_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptExtraFees.ItemDataBound
    If e.Item.ItemType = ListItemType.AlternatingItem Or e.Item.ItemType = ListItemType.Item Then
        Dim txtExtraFeesValue As TextBox = e.Item.FindControl("txtExtraFeesValue")
        Dim trigger As New AsyncPostBackTrigger
        trigger.ControlID = txtExtraFeesValue.UniqueID
        trigger.EventName = "TextChanged"
        pnlTotalFees.Triggers.Add(trigger)
        Dim ScriptManager1 As ScriptManager = Master.FindControl("ScriptManager1")
        ScriptManager1.RegisterAsyncPostBackControl(txtExtraFeesValue)
    End If
End Sub

But the textboxes are still causing complete page post-back. What shall I do?

Posted 3-Jan-11 22:04pm

Ali Al Omairi(Abu AlHassan)

Updated 3-Jan-11 22:13pm

JF2015

v2

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Ali Al Omairi(Abu AlHassan) · Accepted Answer · 2011-01-03T23:14:00

I should have called registerAsyncPostBackControl in Page.Load event. just like:

VB

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    Dim ScriptManager1 As ScriptManager = Master.FindControl("ScriptManager1")

    For Each item As RepeaterItem In rptExtraFees.Items
        If item.ItemType = ListItemType.AlternatingItem Or item.ItemType = ListItemType.Item Then
            Dim txtExtraFeesValue As TextBox = item.FindControl("txtExtraFeesValue")
            ScriptManager1.RegisterAsyncPostBackControl(txtExtraFeesValue)
        End If
    Next
End Sub