注册中继器中的异步回发控件 [英] Registering Asynchronous Post-back Control that is in repeater

问题描述

我试图通过处理转发器的DataItemBound来注册转发器中的文本框以进行异步回发:

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

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

但是文本框仍然导致完整的页面回发.我该怎么办?

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

推荐答案

我应该在Page.Load事件中调用registerAsyncPostBackControl.就像:

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

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

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