Questions on UI for WinForms Forum

1 answer

461 views

Hello

I have a RadGridView, and when a user hovers the mouse over a cell, I would like to give him a "how did this data got here" kind of tooltip. Using RadGridView1_ToolTipTextNeeded works well, and allows me to query the database for the detailled informations of a cell, but I would like to display it in a column-aligned tooltip to make it easy to read. I created a complex method that "pad" the tooltip "columns" according to the number of characters, but I got caught by the rookie mistake that the default font is not fixed size (like Arial).

Is there a way to change the displayed font?

Also, can the tooltip display timer be increased? I would like the user to have time to read it before it closes.

Thanks

GridView

answered on 08 Feb 2013

16 answers

351 views

How to embed a GridView in a ScreenTip?

Hi Guys

I'm trying to embed a gridview in a screen tip in order to display information about a cell in an underlying grid when that cell IsMouseOver.

I'm using the following code embedding a grid in a RadHostItem and then adding that to the Items collection of the screentip. Debugging shows that the RadHostItem and its grid are appearing in the collection but the Grid does not display when the screentip is displayed.
Any help to solve this would be appreciated.

Many thanks in advance
Regard
Ian Carson

void rgvOperationsGrid_ScreenTipNeeded(object sender, ScreenTipNeededEventArgs e)

{

var cell = e.Item as GridDataCellElement;

if (cell == null ) return;

if(cell.ColumnIndex==5 || cell.ColumnIndex==7)

ShowParameterScreenTipForCell(cell);

}

private void ShowParameterScreenTipForCell(GridDataCellElement cell)

{

var tipGrid = new RadGridView();

tipGrid.Columns.Add(new GridViewTextBoxColumn {HeaderText = "This is a column"});

tipGrid.MasterTemplate.BestFitColumns();

var rowInfo = tipGrid.Rows.AddNew();

rowInfo.Cells[0].Value = "Hello";

var screenTip = new RadOffice2007ScreenTipElement();

screenTip.ThemeRole = "Office2010Silver";

screenTip.AutoSize = false;

screenTip.Size = new Size(200, 200);

screenTip.CaptionLabel.Text = "This is a Screen Tip";

var contentItem = new RadHostItem(tipGrid);

contentItem.MinSize = new Size(100, 100);

//contentItem.Image = Resources.Execution24;

//contentItem.FitToSizeMode = RadFitToSizeMode.FitToParentBounds;

screenTip.Items.Insert(1, contentItem);

cell.ScreenTip = screenTip;

}

GridView

answered on 08 Feb 2013

2 answers

483 views

NullReferenceException when bound data changed on non-UI thread

When I sort my grid on certain columns and then change the data bound to the grid from a thread other than the main UI thread, I sometimes get a null reference exception.

My setup is basically this:

_gridView.DataSource = myObject.Children;
// user sorts grid
// user requests update from server
make BackgroundWorker to pull from server and update myObject.Children (fields of existing objects and add/remove from list)
show progress dialog on UI thread while data is being pulled from server and put into Children on BackgroundWorker thread

I get this exception:

System.NullReferenceException {"Object reference not set to an instance of an object."}

at Telerik.Collections.Generic.AvlTree`1.FixInsert(AvlTreeNode`1 t, AvlTreeNode`1 u, Int32[] ad, Int32 n)

at Telerik.Collections.Generic.AvlTree`1.Insert(Int32 index, 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.GridViewRowInfo.get_Index()

at Telerik.WinControls.UI.GridDataRowElement.UpdateAlternatingRowColor()

at Telerik.WinControls.UI.GridDataRowElement.ApplyCustomFormatting()

at Telerik.WinControls.UI.GridRowElement.UpdateInfo()

at Telerik.WinControls.UI.GridDataRowElement.UpdateInfo()

at Telerik.WinControls.UI.GridRowElement.Initialize(GridViewRowInfo rowInfo)

at Telerik.WinControls.UI.GridRowElement.Attach(GridViewRowInfo row, Object context)

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.InsertElement(Int32 position, IVirtualizedElement`1 element, T data)

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.UpdateElement(Int32 position, T data)

at Telerik.WinControls.UI.ScrollableRowsContainerElement.UpdateElement(Int32 position, GridViewRowInfo data)

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureElements()

at Telerik.WinControls.UI.BaseVirtualizedContainer`1.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.UI.ScrollableRowsContainerElement.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)

at Telerik.WinControls.RadElement.Measure(SizeF availableSize)

at Telerik.WinControls.UI.RowsContainerElement.MeasureOverride(SizeF availableSize)

at Telerik.WinControls.RadElement.MeasureCore(SizeF availableSize)

at Telerik.WinControls.RadElement.Measure(SizeF availableSize)

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()

at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayoutCallback(ILayoutManager manager)

Looking at my worker thread state when this exception occurs, I get this more complete looking call stack. It looks like this should perhaps being doing an Invoke to move these changes to the grid back to the UI thread.

[Managed to Native Transition]

mscorlib.dll!System.Type.IsVisible.get() + 0x23 bytes

System.dll!System.SecurityUtils.MethodInfoInvoke(System.Reflection.MethodInfo method, object target, object[] args) + 0x30 bytes

System.dll!System.ComponentModel.ReflectPropertyDescriptor.GetValue(object component) + 0x5f bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadListSource<System.__Canon>.GetBoundValue(object dataBoundItem, string propertyName) + 0x3a bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.BoundAccessor.this[Telerik.WinControls.UI.GridViewRowInfo].get(Telerik.WinControls.UI.GridViewRowInfo row) + 0xb7 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewDateTimeColumn.GetValue(Telerik.WinControls.UI.GridViewRowInfo row, Telerik.WinControls.UI.GridViewDataOperation operation) + 0x15 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewRowInfoComparer.CompareRows(Telerik.WinControls.UI.GridViewRowInfo x, Telerik.WinControls.UI.GridViewRowInfo y, Telerik.WinControls.Data.SortDescriptorCollection context) + 0x93 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewRowInfoComparer.Compare(Telerik.WinControls.UI.GridViewRowInfo x, Telerik.WinControls.UI.GridViewRowInfo y) + 0xe bytes

Telerik.WinControls.dll!Telerik.Collections.Generic.AvlTree<Telerik.WinControls.UI.GridViewRowInfo>.Insert(Telerik.WinControls.UI.GridViewRowInfo value, bool duplicateallowed, bool overwrite) + 0x114 bytes

Telerik.WinControls.dll!Telerik.Collections.Generic.AvlTree<System.__Canon>.InsertWithDuplicates(System.__Canon value) + 0x32 bytes

Telerik.WinControls.dll!Telerik.Collections.Generic.AvlTree<System.__Canon>.Add(System.__Canon item) + 0x5 bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.AvlIndex<Telerik.WinControls.UI.GridViewRowInfo>.Perform() + 0x2ff bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.AvlIndex<Telerik.WinControls.UI.GridViewRowInfo>.Items.get() + 0x10 bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadDataView<System.__Canon>.Items.get() + 0xe bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadCollectionView<Telerik.WinControls.UI.GridViewRowInfo>.GetEnumerator() + 0x11 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewInfo.Refresh() + 0x213 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewInfo.ChildRows.get() + 0x1f bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewTemplate.ChildRows.get() + 0xa bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.ViewInfoTraverser.SetCollectionForStage(bool initializeCollection) + 0x138 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.ViewInfoTraverser.ChangeCollectionForward() + 0x49 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.ViewInfoTraverser.MoveNextCore() + 0x33 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.ViewInfoTraverser.MoveNext() + 0x3a bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTraverser.MoveNextCore() + 0x42 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTraverser.MoveNext() + 0xd bytes

Telerik.WinControls.UI.dll!Telerik.WinControls.UI.ItemScroller<Telerik.WinControls.UI.GridViewRowInfo>.UpdateScrollRange() + 0x60 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.RowScroller.UpdateScrollRange() + 0x19 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTableElement.UpdateWhenItemChanged(Telerik.WinControls.UI.DataViewChangedEventArgs args) + 0x94 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTableElement.UpdateViewCore(object sender, Telerik.WinControls.UI.DataViewChangedEventArgs args) + 0x1ed bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTableElement.UpdateView(object sender, Telerik.WinControls.UI.DataViewChangedEventArgs args) + 0x4e bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(Telerik.WinControls.UI.GridViewEvent eventData) + 0xc7 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(Telerik.WinControls.UI.GridViewEvent eventData) + 0x196 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(Telerik.WinControls.UI.GridViewEvent gridEvent, Telerik.WinControls.UI.PriorityWeakReferenceList list, Telerik.WinControls.UI.GridEventProcessMode processMode) + 0xa4 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(Telerik.WinControls.UI.GridViewEvent gridEvent) + 0x35 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(Telerik.WinControls.UI.GridViewEvent gridEvent) + 0x8a bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents() + 0xda bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(Telerik.WinControls.UI.GridViewEvent gridEvent) + 0x61 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(Telerik.WinControls.UI.GridViewTemplate template, Telerik.WinControls.UI.GridViewEvent eventData, bool postUI) + 0x18b bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewTemplate.DispatchEvent(Telerik.WinControls.UI.GridViewEvent gridEvent, bool postUI) + 0xb bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewTemplate.DispatchDataViewChangedEvent(object sender, Telerik.WinControls.UI.DataViewChangedEventArgs args) + 0xa2 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(object sender, Telerik.WinControls.UI.DataViewChangedEventArgs e) + 0x49 bytes

Telerik.WinControls.GridView.dll!Telerik.WinControls.UI.GridViewTemplate.CollectionView_CollectionChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e) + 0x2e bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadCollectionView<System.__Canon>.OnCollectionChanged(Telerik.WinControls.Data.NotifyCollectionChangedEventArgs args) + 0x3f bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadDataView<Telerik.WinControls.UI.GridViewRowInfo>.ProcessCollectionChanged(Telerik.WinControls.Data.NotifyCollectionChangedEventArgs args) + 0x11b bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadCollectionView<System.__Canon

>.source_CollectionChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e) + 0x23 bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadListSource<System.__Canon>.OnCollectionChanged(Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e) + 0x1e bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadListSource<System.__Canon>.ChangeItem(int index, System.__Canon item, string propertyName) + 0xc2 bytes

Telerik.WinControls.dll!Telerik.WinControls.Data.RadListSource<System.__Canon>.currencyManager_ListChanged(object sender, System.ComponentModel.ListChangedEventArgs e) + 0x125 bytes

System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.OnListChanged(System.ComponentModel.ListChangedEventArgs e) + 0x15 bytes

System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.List_ListChanged(object sender, System.ComponentModel.ListChangedEventArgs e) + 0x53e bytes

System.Data.Entity.dll!System.Data.Objects.ObjectView<System.__Canon>.OnListChanged(System.ComponentModel.ListChangedEventArgs changeArgs) + 0x1f bytes

System.Data.Entity.dll!System.Data.Objects.ObjectView<DataAccess.Child

>.System.Data.Objects.IObjectView.EntityPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) + 0x4d bytes

System.Data.Entity.dll!System.Data.Objects.ObjectViewListener.EntityPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) + 0x31 bytes

System.Data.Entity.dll!System.Data.Objects.DataClasses.StructuralObject.OnPropertyChanged(string property) + 0x31 bytes

System.Data.Entity.dll!System.Data.Objects.DataClasses.StructuralObject.ReportPropertyChanged(string property) + 0x23 bytes

System.Data.Entity.dll!System.Data.Objects.DataClasses.EntityObject.ReportPropertyChanged(string property) + 0x50 bytes

GridView

answered on 08 Feb 2013

5 answers

459 views

[Solved] radbutton back color won't change anymore

I was using the 2012 q2 release and changing back color of my buttons on the fly with

((FillPrimitive)radButton1.ButtonElement.GetChildrenByType(typeof(FillPrimitive))[0]).BackColor = Color.Blue;

i upgraded to 2012 q3. i also tried the latest dev build of that version. Now the above code has no affect. the buttons stay themed as officeblue.
how do i fix this? i want to be able to change them on the fly like i used to be able to. there are a few buttons in my app that the user can set the color to on the fly and this broke.

thanks.

Buttons, RadioButton, CheckBox, etc

answered on 07 Feb 2013

1 answer

178 views

Assembly Error - TabOffice12Shape and TabIEShape

Hello,

I am using Telerik Winform controls v.2010.1.10.504. When in debug mode, the project works fine and builds without any issues. When I create the exe and after I install it on the computer. I then get the attached errors when trying to load the program. I saw in another thread that I need to reference Telerik.WinControls.UI. When I view the references, I see that it is in there with the correct path as seen in the picture attached. Do you have any suggestions as to what the problem may be or any other trouble shooting techniques to fix this error?

Thanks.

Themes and Visual Style Builder

answered on 07 Feb 2013

6 answers

675 views

Big Red Cross Mark in Grid

Iam getting a Big Red Cross Mark in Telerik GridView after upgrading to Q1 2012.

This problem exists in some particular Desktops or Laptops while i was trying to edit a particular cell in a GridView.

The below is the following Exception,

Object reference not set to an instance of an object.
   at Telerik.WinControls.RadElement.ComposeShouldPaintSystemSkin()
   at Telerik.WinControls.RadElement.ShouldPaintSystemSkin()
   at Telerik.WinControls.RadElement.DoOwnPaint(IGraphics graphics, Single angle, SizeF scale)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintOverride(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChild(RadElement child, IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.VisualElement.PaintChildren(IGraphics graphics, Rectangle clipRectange, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadElement.Paint(IGraphics graphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadItem.PaintOverride(IGraphics screenRadGraphics, Rectangle clipRectangle, Single angle, SizeF scale, Boolean useRelativeTransformation)
   at Telerik.WinControls.RadControl.OnPaint(PaintEventArgs e)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at Telerik.WinControls.RadControl.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

GridView

answered on 07 Feb 2013

1 answer

155 views

Horizontal Scroll Hierarchical Grid

Hi,

I have a hierarchical grid that has HorizontalScrollState = AutoHide for the mastertemplate, and HorizontalScrollState
= AlwaysHide for templates(0).

This correctly gives me a single scroll bar for the whole grid when the context exceeds the width of the screen, however when I scroll horizontally, the parent grid tracks with the scrollbar but expanded detail rows do not.

I am looking for the main scrollbar to scroll the entire grid contents together, ie, master rows and any expanded detail rows.

How do I go about this?

Thanks,

Mark.

GridView

answered on 07 Feb 2013

2 answers

179 views

Control Panel, Add/Remove Programs

I'm looking to make a Windows form with a similar design to the Windows Control Panel Add/Remove Programs feature.

My first thought is to use a radListView, bound to my data source, but I'm wondering if there is a better choice.

Thanks

General Discussions

answered on 07 Feb 2013

3 answers

578 views

Prevent Duplicate Values

Hi,
i have a grid with a GridViewDateTimeColumn. I want to prevent the user from inserting a date which is already exists so i don't have duplicates on the gridview (or the DB). how can i achieve that?

BTW:
Can you direct me to a good example of the GridViewDateTimeColumn.DistinctValues property? it seems like i can use it but i don't know how.

Thanks

GridView

answered on 07 Feb 2013

5 answers

227 views

RadApplicationMenu navigating by keyBoard in right to left mode

Hi,

I have a requirement to navigate RadApplicationMenu by keyboard on right to left application.
i set RadApplicationMenu right to left property to true, the menu bar items move arrange in right to left mode but by keyboard navigating in run mode it move reverse , when i press left arrow key selected menu item move to next right item and when i press right arrow key selected menu item move to next left item. why?

how can i do this?
Thank you in advance.

ApplicationMenu

answered on 06 Feb 2013