我把一个DropDownList用的AutoPostBack一个中继器内。 （该ListItems的填充上转发的的ItemDataBound）

 ＆LT; ASP：直放站ID =rptWishlistOnItemCommand =rptWishlist_ItemCommandonItemDataBound =rptWishlist_ItemDataBound=服务器＆GT;
  ＆LT;的ItemTemplate＆GT;
    ...
    ＆LT; ASP：DropDownList的ID =ddlSize=服务器的AutoPostBack =真正的OnSelectedIndexChanged =ddlSize_SelectedIndexChanged/＆GT;
    ...
 

首先，这一功能甚至没有开枪后回

保护无效ddlSize_SelectedIndexChanged（对象发件人，EventArgs五） { //这个函数永远不会被调用 }

我怎么会那么得到的DataItem后，我得到它的工作？

难道我这做了错误的方式？

感谢你在前进。

要注册的DropDownList的回传，添加以下code：

 受保护的虚拟无效RepeaterItemCreated（对象发件人，RepeaterItemEventArgs E）
    {
        DropDownList的MYLIST =（DropDownList的）e.Item.FindControl（ddlSize）;
        MyList.SelectedIndexChanged + = ddlSize_SelectedIndexChanged;
    }
 

而在你的aspx文件，添加到您的中继标记：

  OnItemCreated =RepeaterItemCreated
 

然后，在你ddlSize_SelectedIndexChanged功能，可以访问父控制是这样的：

  DropDownList的D =（DropDownList的）发送;
   （的RepeaterItem）d.Parent ...
 

希望这有助于。

I am putting a DropDownList with AutoPostBack inside a Repeater. (The ListItems are populated on the repeater's ItemDataBound)

<asp:Repeater ID="rptWishlist" OnItemCommand="rptWishlist_ItemCommand" onItemDataBound="rptWishlist_ItemDataBound" runat="server">
  <ItemTemplate>
    ...
    <asp:DropDownList ID="ddlSize" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlSize_SelectedIndexChanged" />
    ...

Firstly, this function was not even fired on post back

protected void ddlSize_SelectedIndexChanged(object sender, EventArgs e) { //This function is never called }

How would I then get the DataItem after I get it working?

Am I doing this the wrong way?

Thank you in advance.

To register the dropdownlist for postback, add the following code:

 protected virtual void RepeaterItemCreated(object sender, RepeaterItemEventArgs e)
    {
        DropDownList MyList = (DropDownList)e.Item.FindControl("ddlSize");
        MyList.SelectedIndexChanged += ddlSize_SelectedIndexChanged;
    }

And in your aspx file, add this to your repeater markup:

OnItemCreated="RepeaterItemCreated"

Then, in your ddlSize_SelectedIndexChanged function, you can access the parent control like this:

   DropDownList d = (DropDownList)sender;
   (RepeaterItem) d.Parent...

Hope this helps.