Admin page to manage users, need help with adding roles to this layout

Currently i have a page that has the following  code / layout.. as it is now, i am only displaying the roles and they cant be edited. Since this would be the admin page to manage users, what i would like is to have the Roles display as a checkbox list that shows all our roles and have the roles that the user is assigned to checked. Can that be done, if so are there any examples or tutorials i can review?
 
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False" DataKeyNames="UserName" DataSourceID="ObjectDataSource1" AllowSorting="True" Width="80%"> <Columns> <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" ShowSelectButton="True" /> <asp:CheckBoxField DataField="IsOnline ...