CheckBoxList chklRoles = (CheckBoxList)frm.FindControl("chklRoles");
    foreach (ListItem liRole in chklRoles.Items)
    {
        if (liRole.Selected)
        {
            SecurityDS.SC_RoleRow drwRoles = dtblRoles.NewSC_RoleRow();
            drwRoles.Name = liRole.Value;
            drwRoles.IsActive = false;
            dtblRoles.Rows.Add(drwRoles);
        }
    }
    e.Values["userRole"] = dtblRoles;

<InsertParameters>

                    <asp:Parameter Name="userRole" Type="Object" />
                </InsertParameters>