How to display a pop up message after editing deleting updating data from gridview using SqlDatasource in ASP.NET

hello boss, where should i write this code....becoz am writing all my code in Inpage Technique itself....please help.

This is my code

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" HorizontalAlign="Center" Width="800px"
AllowPaging="True" AutoGenerateDeleteButton="True"
AutoGenerateEditButton="True" BackColor="#E0E0E0" CellPadding="5"
CellSpacing="1" DataKeyNames="Id">
<columns>
<asp:BoundField DataField="Id" HeaderText="Id" InsertVisible="False"
ReadOnly="True" SortExpression="Id" Visible="false"/>
<asp:BoundField DataField="UserName" HeaderText="UserName"
SortExpression="UserName" />
<asp:BoundField DataField="Password" HeaderText="Password"
SortExpression="Password" />
<asp:BoundField DataField="FirstName" HeaderText="FirstName"
SortExpression="FirstName" />
<asp:BoundField DataField="LastName" HeaderText="LastName"
SortExpression="LastName" />
<asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" />

<HeaderStyle BackColor="#FDCB0A" HorizontalAlign="Center" />

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:UserDBConnectionString %>"

SelectCommand="SELECT [Id], [UserName], [Password], [FirstName], [LastName], [Email] FROM [AdminLogin]"
DeleteCommand="DELETE FROM AdminLogin WHERE (Id = @Id)"
UpdateCommand="UPDATE AdminLogin SET UserName = @UserName, Password = @Password, FirstName = @FirstName, LastName = @Lastname, Email = @Email WHERE (Id = @Id)">


So please , where should i write ur code. (Pop up Message for editing and deleting from Gridview).

Please help.

Thanks for EVER.