在Repeater中获取ClientId控制权

Question

转发器在创建项目时触发事件

 Protected Sub Repeater1_ItemCreated(sender As Object, e As RepeaterItemEventArgs) Handles Repeater1.ItemCreated

可以捕获并修改此单个数据行上的控件。

Dim lnk As HyperLink = CType(e.Item.FindControl("lblShipmentDetails"), HyperLink)

现在的问题是，对于任何JavaScript，都需要确定正确的客户端ID。但是控件不包含客户端ID，只包含lblShipmentDetails字符串。

MSDN说的是什么：

https://msdn.microsoft.com/en-us/library/system.web.ui.control.clientidmode%28v=vs.110%29.aspx

https://msdn.microsoft.com/en-us/library/1d04y8ss%28v=vs.140%29.aspx

或CodeProject：

http://www.codeproject.com/Articles/108887/Client-Ids-Generation-with-ASP-NET

但是如何从Repeater中捕获正确的ClientID以在JavaScript中使用它？

使用自动ID生成源。如何获得此ID？

Answer 1

使用DataBound活动。要获取控件ID，转发器需要首先绑定数据。然后只需在Created事件中询问ID。

    Protected Sub Repeater1_ItemDataBound(sender As Object, e As RepeaterItemEventArgs) Handles Repeater1.ItemDataBound
    If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
        Dim btn As Button = CType(e.Item.FindControl("btnOrderTrackingConfirmMove"), Button)
        If btn IsNot Nothing Then
            Dim RealId As String = btn.Page.ClientScript.GetPostBackEventReference(btn, String.Empty).ToString

        End If
    End If
End Sub