Hello.

I have Gridview with ColorColumn which is binded to database varchar field. Data displays correctly, but when I want  to change it, error [Input string was not in correct format.] is thrown. I think it has something to do with changing data from string to System.Drawing.Color.

Regards.

I just want to make sure I'm doing this correctly.  In my constructor I have this:
            HamsGrid.MasterTemplate.SortComparer = new HamsCustomComparer();
            HamsGrid.MasterTemplate.SortComparer = null; //line 1807 in code
Setting it to null is causing an exception (I only have from my call at line 1807 on up):
System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Collections.Generic.AvlTree`1.LastIndex(ValueT value)
   at Telerik.Collections.Generic.AvlTree`1.InsertWithDuplicates(ValueT value)
   at Telerik.Collections.Generic.AvlTree`1.Add(ValueT item)
   at Telerik.WinControls.Data.AvlIndex`1.Perform()
   at Telerik.WinControls.Data.AvlIndex`1.get_Items()
   at Telerik.WinControls.Data.RadDataView`1.get_Items()
   at Telerik.WinControls.Data.RadCollectionView`1.GetEnumerator()
   at Telerik.WinControls.UI.GridViewInfo.Refresh()
   at Telerik.WinControls.UI.GridViewInfo.get_ChildRows()
   at Telerik.WinControls.UI.GridViewTemplate.get_ChildRows()
   at Telerik.WinControls.UI.ViewInfoTraverser.SetCollectionForStage(Boolean initializeCollection)
   at Telerik.WinControls.UI.ViewInfoTraverser.SetCollectionForStage()
   at Telerik.WinControls.UI.ViewInfoTraverser.ChangeCollectionForward()
   at Telerik.WinControls.UI.ViewInfoTraverser.MoveNextCore()
   at Telerik.WinControls.UI.ViewInfoTraverser.MoveNext()
   at Telerik.WinControls.UI.GridTraverser.MoveNextCore()
   at Telerik.WinControls.UI.GridTraverser.MoveNext()
   at Telerik.WinControls.UI.ItemScroller`1.UpdateScrollRange()
   at Telerik.WinControls.UI.RowScroller.UpdateScrollRange()
   at Telerik.WinControls.UI.GridTableElement.UpdateNoDataText()
   at Telerik.WinControls.UI.GridTableElement.UpdateAll()
   at Telerik.WinControls.UI.GridTableElement.UpdateViewCore(Object sender, DataViewChangedEventArgs args)
   at Telerik.WinControls.UI.GridTableElement.UpdateView(Object sender, DataViewChangedEventArgs args)
   at Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(GridViewEvent eventData)
   at Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(GridViewEvent eventData)
   at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)
   at Telerik.WinControls.UI.GridViewEventProcessEntity.Process(GridViewEvent gridEvent)
   at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)
   at Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)
   at Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents()
   at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent)
   at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewTemplate template, GridViewEvent eventData, Boolean postUI)
   at Telerik.WinControls.UI.GridViewTemplate.DispatchEvent(GridViewEvent gridEvent, Boolean postUI)
   at Telerik.WinControls.UI.GridViewTemplate.DispatchDataViewChangedEvent(Object sender, DataViewChangedEventArgs args)
   at Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e)
   at Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(DataViewChangedEventArgs e)
   at Telerik.WinControls.UI.GridViewTemplate.CollectionView_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   at Telerik.WinControls.Data.RadCollectionView`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   at Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
   at Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
   at Telerik.WinControls.Data.RadDataView`1.OnNotifyPropertyChanged(PropertyChangedEventArgs e)
   at Telerik.WinControls.Data.RadDataView`1.set_Comparer(IComparer`1 value)
   at Telerik.WinControls.UI.GridViewTemplate.set_SortComparer(IComparer`1 value)
   at TCS.TDOC.DispatchScreen.SortCustomRadio_ToggleStateChanged(Object sender, StateChangedEventArgs args) in C:\Work\TCS\Source\TCS\TCS\ContentScreens\DispatchScreen.cs:line 1807

Hi.. 
Im using PropertyGrid for my own class.
that class have nonbasic type..
that type is kind of class. ex) Point,SizeF
If I try change Some Data at unexpand mode
Look at example picture.
at there if I write some bad string like "20,A"
in typeconverter make exception but that exception make program dead.
system.windows.form.propertygrid just show popupmessage.
but radpropertygrid make program dead.

even RadControl Demo also Dead.. please tell me about solution or fix that bug..
thanks...

Hi,

I want to use a RadListView in Icons View Type showing long label.
Here is the code :


The problem is when the list size is to small, a scroll bar appears, but an empty space appears too on the top of the list, and the last item of the list becomes hidden (even in scrolling down the list)

The first image shows the list with all items, the second one has too little width (and an empty space on the top), the third shows the list with an invisible item

Could you help me with this?
Thanks

Regards,

Hello,

I'm totally new to creating charts with Telerik's controls. What I need to create is a gantt chart that will display employee names on the Y-Axis and a time range on the x-axis.

So basically my data would come in the form of this:

John Doe - Worked from: 11:00, to: 17:00
Martha S. - Worked from: 5:00 to 11:00

So, the names would appear at the vertical plane, while a time range would be at the horizontal plane.

Help please!

I know I should've searched, but since i'm really new to this, I wouldn't exactly know what to look for.

Thanks in advance guys.

Hi there,
    I have a datatable that I am using as the source of my datagrid. The datagrid is a self referencing hierarchy. When I add a row to the datatable, it does not appear in the grid. If I add a second row, or click around in the grid it appears. It is as though the grid is not being repainted. I need to mention that this grid allows for drag and drop from another grid.

Code under my add button:

nCount += 1

 

Dim dr As DataRow

 

dr = dtTable2.NewRow

dr("Item Number") = nCount
dr("ParentItem") = 0

dr("Item Desc") = ""

dr("Quantity") = 0

dr("UOM") = ""

dr("Vendor") = ""

 

dtTable2.Rows.Add(dr)

 

dgBOM.DataSource = dtTable2

 

 

 

Hi
I m having this error. Can anyone please help me. frmSetCountry Variable has value in it.
Thanks

Hi,

Is it possible to change appointment layout?
In RadScheduler control for asp.net we can customize appointment template and i want to do the same in RadScheduler for Windows Forms. What i want to do is something like the appearance in image attached. The round rectangle named "report" is a clickable button.

How to re-order the stripitems in desgin view? Thanks.

Hi,

When I want to add a new row (by the 'add new row line') to my grid, it works fine when I commit the new row by pushing the 'enter' key. But when I fill in some new data in the new row line and I click (by mouse) in the empty space in the grid. The new row appears in the grid but its not commited,& it does not fire the UserAddedRow event.
How is it possible to make the new data is commited not by pressing the 'enter' key but by clicking in the empty space in the grid?

Kind regards