Questions on UI for WPF Forum

6 answers

343 views

Hello @all,

our problem is the RadTreeView always jumping to the top when wrapped like in the xaml below. It took a long time to find out, but in this way I was able to reproduce it. We disabled the ScrollViewer of the RadPanelBar so we can scroll to certain items in the TreeView in the original context.

Expand the RadPanelBarItem, scroll down, select an item there. Move the GridSplitter or just resize the window and the RadTreeView's ScrollViewer jumps back to the top.
Change the RadTreeView and its items to the standard WPF TreeView and items and it stays scrolled where it is. Unfortunately we would be missing certain features of the RadTreeView we would like to use.

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*" />

</Grid.ColumnDefinitions>

<Controls:RadPanelBar ScrollViewer.HorizontalScrollBarVisibility="Disabled"

ScrollViewer.VerticalScrollBarVisibility="Disabled">

<Controls:RadPanelBarItem>

<Controls:RadTreeView Grid.Column="0"

HorizontalAlignment="Stretch"

Animation:AnimationManager.IsAnimationEnabled="False">

<Controls:RadTreeViewItem Header="1">

<Controls:RadTreeViewItem Header="2" />

</Controls:RadTreeViewItem>

</Controls:RadTreeView>

</Controls:RadPanelBarItem>

</Controls:RadPanelBar>

<GridSplitter Grid.Column="0" Width="3" HorizontalAlignment="Right" />

<Button Grid.Column="1">Test</Button>

</Grid>

Any ideas how we could fix this?

Kind regards,
M. Lohmann.

TreeView

answered on 30 Sep 2014

5 answers

581 views

Barcode Print in WPF

Dear Concerned

I have checked documentation for Bar code 128 and other barcodes but not able to get how to print it.
I have reached to barcode silveright and WPF . Where it is explained that

Private void Button_Click( object sender, RoutedEventArgs e)

{

PrintDocument document = new PrintDocument ();

document.PrintPage += (s, args) =>

{

args.PageVisual = this.radBookItem1;

};

document.Print("Silverlight Printing Demo");

};

but not getting "PrintDoument" dll, Also if feasible please provide sample in vb.net

Thanks in Advance.

BarCode

answered on 30 Sep 2014

1 answer

168 views

UI Automation for RadRibbonContextualGroup

I have ribbon with contextual tabs.

01.<telerik:RadRibbonWindow x:Class="WpfApp.MainWindow"

02. xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

03. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

04. xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

05. Title="MainWindow" Height="350" Width="525">

06. <telerik:RadRichTextBoxRibbonUI>

07. <telerik:RadRibbonTab Header="Tab1">

08. <telerik:RadRibbonGroup Header="BBB">

09. <telerik:RadToggleButton Name="ToggleButton" Content="Show" />

10. </telerik:RadRibbonGroup>

11. </telerik:RadRibbonTab>

12.

13. <telerik:RadRibbonTab ContextualGroupName="TestTab" Header="Tab2">

14. <telerik:RadRibbonGroup Header="AAA">

15. <telerik:RadRadioButton Name="TARGET_BUTTON" Content="ClickMe" />

16. </telerik:RadRibbonGroup>

17. </telerik:RadRibbonTab>

18.

19. <telerik:RadRichTextBoxRibbonUI.ContextualGroups>

20. <telerik:RadRibbonContextualGroup Header="Test" IsActive="{Binding IsChecked, ElementName=ToggleButton}" Color="BlueViolet" GroupName="TestTab" />

21. </telerik:RadRichTextBoxRibbonUI.ContextualGroups>

22. </telerik:RadRichTextBoxRibbonUI>

23.</telerik:RadRibbonWindow>

I try get access to element with name "TARGET_BUTTON" with UI Automation API.

01.var app = AutomationElement.RootElement.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.NameProperty, "My Application"));

02.var allChildren = TreeWalker.RawViewWalker.GetParent(app).FindAll(TreeScope.Descendants, Condition.TrueCondition);

03.

04.foreach (AutomationElement automationElement in allChildren)

05.{

06. try

07. {

08. if (automationElement.Current.AutomationId == "TARGET_BUTTON")

09. {

10. Console.WriteLine("{0} ({1})", automationElement.Current.ClassName, automationElement.Current.AutomationId);

11. }

12. }

13. catch { }

14.}

But this code don't find the button.
If I set in line 20 IsActive="true" then I can find the button.
I use last version of UI for WPF.

RibbonView and RibbonWindow

answered on 29 Sep 2014

2 answers

188 views

Problem where to attach keydown event

Where should i attach the event to make it work properly?

Now i attach it to a RadPane, but it only works aslong as some objeckt inside the RadPane is focused. If i have the "frame" of the RadPane focused, say after i reposition it, the KeyDown will not fire.

I have tried to attach the event to almost every object above the RadPane in the hierarchy but no luck so far...

Pseudu:

Grid
RadDocking
RadSplitContainer
RadPaneGroup <-- Inside here we dynamically add RadPanes
/RadSplitContainer
/RadDocking
/Grid

Docking

answered on 29 Sep 2014

2 answers

451 views

Strange issue with horizontal scrolling

Hi there,

I'm having some strange troubles with the RadGridView. I'm populating the grid dynamically in code behind in the Loaded event because the number of columns needed is not known at design time. So far so good and after the data is loaded the grid looks fine. Column and row virtualization are enabled by default, vertical scrolling works and performance is really good. BUT horizontal scrolling does look really strange. The column headers do not move at all and the visible cells just move out to the left side of the grid while something that looks like empty grid rows moves into view by scrolling further to the right. This happens out of the box before I even start fiddling around with the various properties of the RadGridView.

If I turn off column virtualization part of the issue goes away. Headers still don't move and performance of loading and scrolling becomes really bad because there can be hundreds of columns. I tried to change almost every setting on the grid but I can't seem to get rid of the problem...

Regards,
Marcel

GridView

answered on 29 Sep 2014

1 answer

234 views

How do I render an OSM file in RadMap 2014 Q2?

I'm building a prototype of an application that will utilize offline data from OpenStreetMap.org. So far, I spun up a new WPF project and threw together a quick RadMap using the OSM data provider. The application works but now I want implement a local data source. I downloaded a small dataset from the OSM website. The data is an OSM file and contains XML.

How do I use this file with the RadMap control? I'm new to the RadMap control but have worked with .NET / XML / GIS for years.

Thanks!

Map

answered on 29 Sep 2014

5 answers

252 views

How to trigger the auto-ranging of axes

Hello,

I'm using your ChartView in combination with a TreeView and selectable series. I have bound the series visibility to a Checked-Property on my series elements. When I check some series they are drawn in the Chart and the axis scales accordingly. But there is one problem: It does only increase the displayed range and there is no change when I disable the series that caused the range-adaption. So I'm looking for a way to tell the Chart that it must auto-range the whole display area so I have the best view on it. I haven't found such a method and the frameworks UpdateLayout(), Arrange() don't work. Is there any way to accomplish that?

Thanks in advance!

Best regards,
Peter Schmidt

ChartView

answered on 29 Sep 2014

5 answers

334 views

Exported Image is blurred

Hi,

I have a problem with the "Export to image" feature of the RadDiagram.
In particular when I export an image with lots of RadDiagramShape and RadDiagramConnections the image has a correct dimension, but the shapes and the connections are blurred.

The following is the piece of code which I use to serialize the image and I' ve attached an example of exported image.

using (var rawImageStream = new MemoryStream()) {
diagram.ExportToImage(rawImageStream, margin: ExportMargin, backgroundBrush: new SolidColorBrush(Colors.White));
rawImageStream.Seek(0, SeekOrigin.Begin);

using (var trimmedBitmap = new Bitmap(rawImageStream).Trim(0xffffff)) {
trimmedBitmap.Save(outputStream, ImageFormat.Png);
}
}

Is there a way to improve it and render the exported image clearer?
Thanks

Ciro

Diagram

answered on 27 Sep 2014

3 answers

125 views

ModalEditor usage

Is there an example available that demonstrates the usage of the ModalEditor class for the property grid?

I'd like to specify my own editor template for a particular field using the DataTemplateSelector. The editor would display a modal window.

Thanks.

Ben Brouse

PropertyGrid

answered on 26 Sep 2014

3 answers

403 views

Exception when creating QRCode as image in code

Im getting the following exception when i try to create a QRCode and render it as an image in c#.

System.ArgumentOutOfRangeException was unhandled

_HResult=-2146233086

_message=The parameter value must be greater than zero.

HResult=-2146233086

IsTransient=false

Message=The parameter value must be greater than zero.

Parameter name: pixelWidth

Source=PresentationCore

ParamName=pixelWidth

StackTrace:

at System.Windows.Media.Imaging.RenderTargetBitmap..ctor(Int32 pixelWidth, Int32 pixelHeight, Double dpiX, Double dpiY, PixelFormat pixelFormat)

at Telerik.Windows.Media.Imaging.ExportHelper.GetBitmapSource(FrameworkElement element, Double dpiX, Double dpiY)

at Telerik.Windows.Media.Imaging.ExportHelper.GetElementImage(FrameworkElement element)

at Telerik.Windows.Media.Imaging.ImageExporter.Export(FrameworkElement element, Stream stream, BitmapEncoder encoder)

at Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(FrameworkElement element, Stream stream, BitmapEncoder encoder)

at TelerikWpfApp1.MainWindow.Button_Click(Object sender, RoutedEventArgs e) in c:\Users\Martin\Documents\Visual Studio 2013\Projects\TelerikWpfApp1\TelerikWpfApp1\MainWindow.xaml.cs:line 46

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)

at System.Windows.Controls.Primitives.ButtonBase.OnClick()

at System.Windows.Controls.Button.OnClick()

at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)

at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)

at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)

at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)

at System.Windows.Input.InputManager.ProcessStagingArea()

at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)

at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)

at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)

at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)

at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.Run()

at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window)

at System.Windows.Application.Run(Window window)

at System.Windows.Application.Run()

at TelerikWpfApp1.App.Main() in c:\Users\Martin\Documents\Visual Studio 2013\Projects\TelerikWpfApp1\TelerikWpfApp1\obj\x86\Debug\App.g.cs:line 0

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

Im using 2014.2.729.40. Attached is a new Telerik Wpf app project that shows the same behaviour as my program.

TelerikWpfApp1.zip

Am I missing some vital property or is this a known issue?

Thanks,
MArtin

BarCode

answered on 26 Sep 2014