Hi all !I have a simple 1:n relation between departments and users to be displayed by a UltraWebGrid.ASPx-Code & C# Code looks like this: <igtbl:UltraWebGrid ID="departmentWebGrid" runat="server" CaptionAlign="Top" Browser="Xml" oninitializedatasource="departmentWebGrid_InitializeDataSource" onselectedrowschange="departmentWebGrid_SelectedRowsChange" oninitializelayout="departmentWebGrid_InitializeLayout" Height="100%" Width="100%" oninit="departmentWebGrid_Init" oninitializeband="departmentWebG .... </igtbl:UltraWebGrid> protected void departmentWebGrid_InitializeDataSource(object sender, Infragistics.WebUI.UltraWebGrid.UltraGridEventArgs e) { if (sender is UltraWebGrid) { UltraWebGrid gird = (UltraWebGrid)sender; try { // Create the view DataView view = new Infragistics.Web.UI.DataSourceControls.DataView(); // Set the required properties view.DataSourceID = this.ObjectDataSourceDepartment.ID; view.ID = "Department_View"; this.departmentWebHierarchicalDataSource.DataViews.Add(view); // Set the view for SqlDataSource2 view = new Infragistics.Web.UI.DataSourceControls.DataView(); view.DataSourceID = this.ObjectDataSourceUsers.ID; view.ID = "Users_View"; this.departmentWebHierarchicalDataSource.DataViews.Add(view); DataRelation dr = new Infragistics.Web.UI.DataSourceControls.DataRelation(); dr.ParentDataViewID = "Department_View"; dr.ParentColumns = new string[ { "DepartmentId" }; dr.ChildDataViewID = "Users_View"; dr.ChildColumns = new string[ { "UserId" }; this.departmentWebHierarchicalDataSource.DataRelations.Add(dr); this.departmentWebGrid.DataSourceID = this.departmentWebHierarchicalDataSource.ID; this.departmentWebGrid.DataBind(); this.departmentWebGrid.DisplayLayout.ViewType = Infragistics.WebUI.UltraWebGrid.ViewType.OutlookGroupBy; //this.departmentWebGrid.Bands[0].Columns[1].Hidden = true; } catch (Exception ex) { throw new HttpException("Error: could not load data for the departments web grid !" + ex.Message); } } } protected void departmentWebGrid_InitializeLayout(object sender, LayoutEventArgs e) { int i = 0; }Putting a breakpoint into the departmentWebGrid_InitializeLayout() delegate shows, that this event handler will never run through.Any hint or idea is welcome. Thanks in advance !Regards, Claus