从DataList内的DropDownList获取选定的值

<asp:DataList ID="myDataList" runat="server">
    <ItemTemplate>
        <asp:DropDownList ID="myDropDownList" runat="server">
            <asp:ListItem Text="Option 1" Value="1"></asp:ListItem>
            <asp:ListItem Text="Option 2" Value="2"></asp:ListItem>
            <asp:ListItem Text="Option 3" Value="3"></asp:ListItem>
        </asp:DropDownList>
    </ItemTemplate>
</asp:DataList>

protected void myDataList_ItemDataBound(object sender, DataListItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
    {
        DropDownList myDropDownList = (DropDownList)e.Item.FindControl("myDropDownList");
        string selectedValue = myDropDownList.SelectedValue;
        
        // 在这里可以对选定的值进行处理或使用
    }
}