Question

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" />
    ...

1. Firstly, this function was not even fired on post back

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

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

Am I doing this the wrong way?

Thank you in advance.

Answer 1

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.