ASP.Net：为什么我的按钮的点击/命令事件没有约束力/在一个中继器发射？ [英] ASP.Net: why is my button's click/command events not binding/firing in a repeater?

问题描述

下面是从具有中继器的ASCX code：

Here's the code from the ascx that has the repeater:

<asp:Repeater ID="ListOfEmails" runat="server" >
    <HeaderTemplate><h3>A sub-header:</h3></HeaderTemplate>
    <ItemTemplate>
    	[Some other stuff is here]
    	<asp:Button ID="removeEmail" runat="server" Text="X" ToolTip="remove" />
    </ItemTemplate>
</asp:Repeater>

和在codebehind为中继的数据绑定和事件：

And in the codebehind for the repeater's databound and events:

Protected Sub ListOfEmails_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles ListOfEmails.ItemDataBound
    If (e.Item.ItemType = ListItemType.Item) Or (e.Item.ItemType = ListItemType.AlternatingItem) Then
    	Dim removeEmail As Button = CType(e.Item.FindControl("removeEmail"), Button)
    	removeEmail.CommandArgument = e.Item.ItemIndex.ToString()

    	AddHandler removeEmail.Click, AddressOf removeEmail_Click
    	AddHandler removeEmail.Command, AddressOf removeEmail_Command
    End If
End Sub

Sub removeEmail_Click(ByVal sender As Object, ByVal e As System.EventArgs)
    Response.Write("<h1>click</h1>")
End Sub

Sub removeEmail_Command(ByVal sender As Object, ByVal e As CommandEventArgs)
    Response.Write("<h1>command</h1>")
End Sub

无论是点击或命令获取调用，我究竟做错了什么？

Neither the click or command is getting called, what am I doing wrong?

推荐答案

嵌套中继器不拦截事件的内部控制。相反，你需要绑定到Repeater.ItemCommand事件。

Controls nested inside of Repeaters do not intercept events. Instead you need to bind to the Repeater.ItemCommand Event.

ItemCommand包含有两个重要的领域RepeaterCommandEventArgs：

ItemCommand contains RepeaterCommandEventArgs which has two important fields:

• 的CommandName


• CommandArgument

所以，一个简​​单的例子：

So, a trivial example:

  void rptr_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
            {
                // Stuff to databind
                Button myButton = (Button)e.Item.FindControl("myButton");

                myButton.CommandName = "Add";
                myButton.CommandArgument = "Some Identifying Argument";
            }
        }

void rptr_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName == "Add")
            {
                // Do your event
            }
        }

编辑：降价完全大清洗我的压痕，哦，我应该停止在这个文本写作code反正

Markdown totally hosed my indentation, oh well, I should stop writing code in this textbox anyways.

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