Questions on UI for WinForms Forum

17 answers

396 views

[Solved] Q2 2010 Grid Exception Error

Hi Support,

I update my project to Telerik Winform Q2 2010. I encounter a problem with the new release in my project when I sort (ascending or descending) a column and then drag the column to a new position.

You can reproduce this error in the Q2 2010 Demo.
1. Select Grid View - Populate with data - Data Binding
2. Sort the Contact Name column
3. Drag the Contact Name column between the Contact Title and Address column.

This is the exception detail I obtain in my code:
System.ArgumentException was unhandled
Message="DataItem not contains 'idesc' property name."
Source="Telerik.WinControls"
StackTrace:
       à Telerik.WinControls.Data.RadDataView`1.ValidateDescriptors()
       à Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
       à Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
       à Telerik.WinControls.Data.RadDataView`1.OnNotifyPropertyChanged(PropertyChangedEventArgs e)
       à Telerik.WinControls.Data.RadCollectionView`1.sortDescriptors_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
       à Telerik.Collections.Generic.NotifyCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
       à Telerik.WinControls.UI.GridViewSortDescriptorCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
       à Telerik.Collections.Generic.NotifyCollection`1.InsertItem(Int32 index, T item)
       à Telerik.WinControls.Data.SortDescriptorCollection.InsertItem(Int32 index, SortDescriptor item)
       à Telerik.WinControls.UI.GridViewSortDescriptorCollection.InsertItem(Int32 index, SortDescriptor item)
       à System.Collections.ObjectModel.Collection`1.Add(T item)
       à Telerik.WinControls.UI.GridViewColumn.Sort(RadSortOrder sortOrder, Boolean multiSortMode)
       à Telerik.WinControls.UI.GridViewColumn.set_SortOrder(RadSortOrder value)
       à Telerik.WinControls.UI.GridViewColumn.Initialize()
       à Telerik.WinControls.UI.GridViewDataColumn.Initialize()
       à Telerik.WinControls.UI.GridViewColumn.set_OwnerTemplate(GridViewTemplate value)
       à Telerik.WinControls.UI.GridViewColumnCollection.InsertItem(Int32 index, GridViewDataColumn item)
       à System.Collections.ObjectModel.Collection`1.Insert(Int32 index, T item)
       à Telerik.WinControls.UI.RadGridViewDragDropService.Move[T](Collection`1 collection, Int32 oldIndex, Int32 newIndex)
       à Telerik.WinControls.UI.RadGridViewDragDropService.MoveOnLeftOrRight[T](Boolean isDroppedAtLeft, Collection`1 collection, T targetItem, T draggedItem)
       à Telerik.WinControls.UI.GridHeaderCellElement.ProcessDragDrop(Point dropLocation, ISupportDrag dragObject)
       à Telerik.WinControls.RadItem.Telerik.WinControls.ISupportDrop.DragDrop(Point dropLocation, ISupportDrag dragObject)
       à Telerik.WinControls.RadDragDropService.Commit()
       à Telerik.WinControls.RadService.Stop(Boolean commit)
       à Telerik.WinControls.RadDragDropService.Telerik.WinControls.IMessageListener.PreviewMessage(Message& msg)
       à Telerik.WinControls.RadMessageFilter.NotifyGetMessageEvent(Message& msg)
       à Telerik.WinControls.RadMessageFilter.GetMessageHookProc(Int32 code, IntPtr wParam, IntPtr lParam)
       à System.Windows.Forms.UnsafeNativeMethods.GetMessageW(MSG& msg, HandleRef hWnd, Int32 uMsgFilterMin, Int32 uMsgFilterMax)
       à System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       à System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       à System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       à System.Windows.Forms.Application.Run(Form mainForm)
       à Virtuo.Program.Main() dans C:\Projet\Virtuo\Virtuo\Program.cs:ligne 19
       à System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       à System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       à Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       à System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       à System.Threading.ThreadHelper.ThreadStart()
InnerException:

Thank you,

Nadia

GridView

answered on 01 Oct 2010

3 answers

116 views

Upgrade from Q2 2009 to latest version

Hi guys,

I'm in the process of upgrading our application's telerik version from Q2 2009 to the latest version currently listed on your site.

The app uses quite a lot of RadGrids and RadRibbonForms which was customised extensively and isn't working anymore.

Is there any demo available that shows how the mdi works for the new version where clicking on the active document would change the ribbon menu to the active document's menu?

General Discussions

answered on 01 Oct 2010

1 answer

229 views

GridView with no border

Hi -

I am trying to display a grid with no outer border (around the outside of the grid).

I Binged and searched several options, such as setting the BorderWidth = 0, but none of the things I tried actually removed the border.

Is there a way to clear the border?

If I do have to have a border, is there a way to make it rounded?

Thanks!

GridView

answered on 01 Oct 2010

1 answer

152 views

Error when switching windows

Hi everybody,

I get an .Net Framework Exception while switching between Windows :(

System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.

bei Telerik.WinControls.UI.TableViewRowLayoutBase.InvalidateRenderColumns()

bei Telerik.WinControls.UI.TableViewRowLayout.InvalidateRenderColumns()

bei Telerik.WinControls.UI.RowsContainerElement.UpdateWhenColumnsChanged()

bei Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(GridViewEvent eventData)

bei Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(GridViewEvent eventData)

bei Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)

bei Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)

bei Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)

bei Telerik.WinControls.UI.GridViewSynchronizationService.OnPostCallback(Object state)

I don't even know which grid it is, or how to handle it, because my application is still running whithout any evect.

GridView

answered on 01 Oct 2010

8 answers

274 views

ExportToExcelML Problem Q2 2010

Hello,

RunExport throws now this Exception: "Cannot find any base cell element!".

My Code:

ExportToExcelML exporter = new ExportToExcelML(gridview);
            exporter.HiddenColumnOption = HiddenOption.DoNotExport;
            exporter.ExportVisualSettings = true;
            exporter.SummariesExportOption = SummariesOption.ExportOnlyBottom;
            exporter.HiddenRowOption = HiddenOption.DoNotExport;
            exporter.SheetName = "Export";

            string filename = Path.Combine(Path.GetTempPath(), "excel_export.xls");

            try
            {
                exporter.RunExport(filename);
                return filename;
            }
            catch (Exception e)
            {
                return string.Empty;
            }

I have no idea what i have to change.

Regards,
Thomas

GridView

answered on 01 Oct 2010

4 answers

629 views

Row's cell value doesn't update when datasource changed.

Ok

I have a simple but annoying problem.

A datatable bound to a radgridview and 1 column is checkboxcolumn. If user clicks the checkboxcolumn, cell goes to edit mode bot not changed the value on the datatable. After press enter button or selecting a different row value changes on datasource.
so I wrote a code for close editor on value changed

private void RouteGrid_ValueChanged(object sender, EventArgs e)

{
RadCheckBoxEditor editor = sender as RadCheckBoxEditor;

if (editor != null)

{

(editor.EditorManager as GridViewEditManager).CloseEditor();

}
}

But my problem is if i want to change the source all values on the grid changes except selected row or current row. I changed all the property of the rows and cells property (IsSelected,IsCurrent...) but value never changes.

Here is my code

private void btnCancelChanges_Click(object sender, EventArgs e)

{

RouteGrid1.CurrentRow = null;

RouteGrid1.Enabled = false;

if (MessageBox.Show("...", "...", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)

{

DataRow[] Result = null;

this.Cursor = Cursors.WaitCursor;

foreach (DataTable routeTable in viewSalesmanInfo.RouteTableCollection)

{

if (routeTable != null && routeTable.Rows.Count > 0 && !String.IsNullOrEmpty(routeTable.TableName))

{

Result = routeTable.Select("m_Current_State_Id = 0 AND Current_State_Id = -1");

if (Result != null && Result.Length > 0)

foreach (DataRow addCustomer in Result)

routeTable.Rows.Remove(addCustomer);

Result = routeTable.Select(

"(OrderRoute <> m_OrderRoute Or " +

"PaymentRoute <> m_PaymentRoute Or " +

"DeliveryRoute <> m_DeliveryRoute Or " +

"MergeRoute <> m_MergeRoute Or " +

"Route_Position <> m_Route_Position)" +

" OR m_Current_State_Id <> Current_State_Id");

if (Result != null && Result.Length > 0)

foreach (DataRow updateCustomer in Result)

{

updateCustomer.BeginEdit();

updateCustomer["Current_State_Id"] = updateCustomer["m_Current_State_Id"];

updateCustomer["Route_Position"] = updateCustomer["m_Route_Position"];

updateCustomer["MergeRoute"] = updateCustomer["m_MergeRoute"];

updateCustomer["OrderRoute"] = updateCustomer["m_OrderRoute"];

updateCustomer["PaymentRoute"] = updateCustomer["m_PaymentRoute"];

updateCustomer["DeliveryRoute"] = updateCustomer["m_DeliveryRoute"];

updateCustomer.EndEdit();

}

this.Cursor = Cursors.Default;

this.RouteGrid1.MasterTemplate.Refresh();

RouteGrid1.Enabled = true;

}

But after this selected cell value doesnt change.

Is this a bug or is there anything wrong in my code?

GridView

answered on 01 Oct 2010

8 answers

523 views

convert GridviewSummaryItem aggregate value

I have the following code and I need to convert the value that comes from GridAggregateFunction.sum,

Dim summary As New GridViewSummaryItem("dur", " Total: {0} ", GridAggregateFunction.Sum)

Me.grdResults.MasterTemplate.SummaryRowGroupHeaders.Add(New GridViewSummaryRowItem(New GridViewSummaryItem() {summary}))

The values in the dur column are in seconds and I need to convert that to hh:mm:ss. I have a function that will do the conversion but don't see how to call it on that value (GridAggregateFunction.Sum) before it is displayed in the grid.

I tried several things in the ViewCellFormatting and CellFormatting events but that just causes my app to throw a TargetInvocationException error everytime I start it.

Any ideas would be greatly apprectiated.

GridView

answered on 01 Oct 2010

1 answer

179 views

[Solved] Dont allow docking on certain dock controls

Alright I have a Dock Manager with a Docked Tabbed Window and several DockWindow's Docked to the Right Side of the Winform App. Now is there any way I can make it so it WONT allow any of my other DockWindows to be able to dock to that Tabbed document? I dont see any propertys on my inheritted DockWindow/UserDockControl.

Dock

answered on 01 Oct 2010

1 answer

154 views

[Solved] System dialogs

Hi all,

I am using Telerik RadControls for WinForms 2010Q2 on Win2003 Server, implementing in dotnet 3.5 on Visual Studio 2008. I can't find in RadControls documentation anything about dialog controls for opening files or selecting folders, thus I am using standard OpenFileDialog and OpenFolderDialog. Are there equivalent RadControls? Or is there a way to style standard dialogs like RadControls?

Thanks
Roberto

General Discussions

answered on 01 Oct 2010

1 answer

203 views

[Solved] How to Apply different Hierarchy Level to individual Rows of Rad Grid View

Hi,
I need to have different hierarchy levels to individual row of Rad Gid view in my winform application.
Like-
A
B
:..X
C
:..Y
:..Z

As shown above A,B,C are the Rows of same Rad Grid view but all having different hierarchy Levels
A does not have any hierarchy .
B is having one child gird named X.
C is having one child grid name Y and every row of Y having one child grid Z.
I am having 3 buttons in my application 1,2,3.
on button click 1 i want to add A type row to Rad grid.
on button click 2 i want to add B type row to Rad grid.
on button click 3 i want to add C type row to Rad grid.

How to perform this Operation with Rad Gid for Winfoms in Visual Studio 2008 (Dot Net Framework 3.5) Sp1
in C# .net

Regards
Gaurav

GridView

answered on 01 Oct 2010