dropdown in gridview, find GridRow on OnSelectedIndexChanged - asp.net

Question

I have a asp.net gridview. A template field of type dropdownlist is contained in a column:
<asp:TemplateField HeaderTextLabel="strManagedOETeamart">
<ItemTemplate>
<asp:DropDownList runat="server" AutoPostBack="True" OnSelectedIndexChanged="SelectedTeamartChanged">
<asp:ListItem Selected="True" Value="White"> White </asp:ListItem>
<asp:ListItem Value="Silver"> Silver </asp:ListItem>
<asp:ListItem Value="DarkGray"> Dark Gray </asp:ListItem>
<asp:ListItem Value="Khaki"> Khaki </asp:ListItem>
<asp:ListItem Value="DarkKhaki"> Dark Khaki </asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
How can I get the GridViewRow when the user selects another item?
protected void SelectedTeamartChanged(object sender, EventArgs e)
{
DropDownList dropDown = (DropDownList) sender;
//I would like to know the GridViewRow this DropDownList is in
}

Answer 1

You're looking for the NamingContainer property:
GridViewItem row = (GridViewRow)dropDown.NamingContainer;
By the way, that works for any kind of web databound control like GridView, DataList,Repeater or ListView.
Consider this more complex requirement: you have a GridView which is nested in another GridView. Now you're handling a DropDownList's SelectedIndexChanged event that is inside the child's GridView and you want to get the reference to the GridViewRow of the parent GridView:
var control = (Control)sender;
var row = (GridViewRow)control.NamingContainer;
var parentRow = (GridViewRow)row.NamingContainer.NamingContainer;
That's the safest and easiest way to get it.