protected void gvRoles_RowDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
{
int i = gvRoles.FindVisibleIndexByKeyValue(e.Keys[gvRoles.KeyFieldName]);
e.Cancel = true;
UserMan.Roles roles = new UserMan.Roles();
roles.RolesId = (int)e.Keys[gvRoles.KeyFieldName];
if (roles.Delete())
{
this.LoadRoles();
}
}