<EditItemTemplate>
<asp:DropDownList ID="ddlCategoryName"
AutoPostBack="true"
runat="server"
DataSourceID="SqlCategory"
DataTextField="CategoryName"
OnSelectedIndexChanged="ddlCategoryName_SelectedIndexChanged"
DataValueField="CategoryID"
SelectedValue='<%# Eval("CategoryID") %>' >
</asp:DropDownList>
<asp:SqlDataSource ID="SqlCategory"
runat="server"
ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
SelectCommand="SELECT [CategoryName], [CategoryID] FROM [Categories]">
</asp:SqlDataSource>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblCatName" runat="server"
Text='<%# Bind("CategoryName") %>'>
</asp:Label>
</ItemTemplate>
protected void ddlCategoryName_SelectedIndexChanged(object sender, EventArgs e)
{
lblBilgi.Text = ((DropDownList)sender).SelectedItem.ToString();
}