Hello,

By analyzing these logs this morning, we have discovered a new type of error that causes our application to fail many times by a day at one of our clients, the error shows that the interop class Windows was called by the graphics library Telerik.

2016-11-08 09:55:02,344 [1] ERROR Logger -
System.TypeInitializationException: Une exception a été levée par l'initialiseur de type pour 'Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper'. ---> System.ComponentModel.Win32Exception: L’opération a réussi
   à Telerik.Windows.Controls.InternalWindow.Standard.NativeMethods.GetDC(IntPtr hwnd)
   à Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper..cctor()
   --- Fin de la trace de la pile d'exception interne ---
   à Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper.DevicePixelsToLogical(Point devicePoint)
   à Telerik.Windows.DragDrop.DragDropManager.UpdateWindowLocation()
   à Telerik.Windows.DragDrop.DragDropManager.CreateDragDropWindow(Object content)
   à Telerik.Windows.DragDrop.DragDropManager.DoDragDrop(DependencyObject dragSource, Object data, DragDropEffects allowedEffects, DragDropKeyStates initialKeyState, Object dragVisual, Point relativeStartPoint, Point dragVisualOffset)
   à Telerik.Windows.DragDrop.DragInitializer.StartDrag()
   à Telerik.Windows.DragDrop.DragInitializer.StartDragPrivate(UIElement sender)
   à Telerik.Windows.DragDrop.DragInitializer.DragSourceOnMouseMove(Object sender, MouseEventArgs e)
   à System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   à System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   à System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   à System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   à System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   à System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   à System.Windows.Input.InputManager.ProcessStagingArea()
   à System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   à System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   à System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   à System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   à System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   à MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   à MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   à System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   à System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

Did you ever experience this problem?

Hi,

I have a little problem. I put RadPanel in application based on Visual Studio theme with the following code.

    <StackPanel x:Name="NavigationStackPanel">
        <telerik:RadPanelBar
            x:Name="NavigationPanel"
            AutoScrollToSelectedItem="True"
            BringIntoViewMode="HeaderAndItems"
            ExpandMode="Multiple" SelectionMode="Single"
            ItemsSource="{Binding Path=ApplicationNodes}"
            ItemTemplate="{StaticResource PanelBarHeaderTemplate}"
            SelectionChanged="NavigationPanel_SelectionChanged"
            BorderThickness="0"
            ScrollViewer.HorizontalScrollBarVisibility="Visible"
            ScrollViewer.VerticalScrollBarVisibility="Visible" />
    </StackPanel>

Unfortunately, scroll does not work properly as you can see on the screenshots. Any ideas how I can fix it?

Hi there,

Is it possible to resize a row number column (the first column) like other columns?

please reply it!

Hello,

I have a GridView with large number of data. I am using Datapager for pagination having 100 records per page. On click of next page I download the next 100 records.

Problem :- Inbuilt sorting, sorts the whole gridview but I want to sort only the current page not the whole grid, as other pages may not have data.

While sorting with other pages as blank, results in null values shown up at the top of the grid.

Any help appreciated!
Thanks,

Hi there,

I'm having trouble adding new data row or changing data on the grid view.

I can't see new data row when the grid view is filled.

I think the data row is filled as other data rows. 

I'd like new data row to ignore the filtering and sorting when it is added.

Could you give us some advice how to fix this issue?

please reply it.

Hi everyone,

I am trying to use Telerik Testing Framework to automate tests fpr a WPF application that has a drag and drop style "pallette" created using GoXam. I originally started using TestStudio, but got mixed results (sometimes the elements would be dragged and droppe, but not always), I believe that this is because it finds the elements based on location data.

I want to find the elements in the canvas via element data (automationId, type, text etc.), but whenever I try and search for an element by these attributes I get an element not found error. I tried with various different ways of finding the element (Find.ByTextContent, Find.ByAutomationID, Find.ByXamlExpression), but I always seem to get an element not found error.

I have posted my test and the section of the xaml that holds the element that I want to drag and drop below.

Any help would be hugely appreciated.

David

Xaml Section:

<DataTemplate x:Key="GroupTemplate">
                <Border BorderThickness="2" Background="{Binding Path=Data.Color}"
              BorderBrush="{Binding Path=Data.Color}"
              go:Part.SelectionAdorned="True"
              go:Part.Resizable= "{Binding Path=Data.Resizable, Mode=TwoWay}"
              go:Node.LocationElementName="myGroupPanel"
              go:Group.IsSubGraphExpanded="{Binding Path=Data.IsSubGraphExpanded, Mode=TwoWay}"
              go:Part.DropOntoBehavior="AddsToGroup">
                    <StackPanel Background="{Binding Path=Node.IsDropOntoAccepted, Converter={StaticResource theBrushChooser}}">
                        <StackPanel AutomationProperties.AutomationId="Canvas_Element" Orientation="Horizontal" HorizontalAlignment="Left">
                            <Button x:Name="myCollapseExpandButton"                                
                            Content="{Binding Path=Group.IsExpandedSubGraph, Converter={StaticResource theButtonConverter}}"
                            Width="20" Margin="0 0 5 0" Visibility="{Binding Path=Data.Visibility}">
                                <i:Interaction.Triggers>
                                    <i:EventTrigger EventName="Click">
                                        <i:InvokeCommandAction Command="{Binding Path=DataContext.CollapseExpandCommand, 
                                        RelativeSource={RelativeSource AncestorType={x:Type local:HierarchicalView}}, Mode=OneWay}" 
                                        CommandParameter="{Binding Path=Group}"/>
                                    </i:EventTrigger>
                                </i:Interaction.Triggers>
                            </Button>
                            <TextBox Text="{Binding Path=Data.Name}" FontWeight="Bold" go:Part.TextEditable="{Binding Path=Data.Editable}" FontSize="20" x:Name="TextBox" 
                                 IsEnabled="{Binding Path=Data.Editable}" Background="{Binding Path=Data.Color}">
                                <i:Interaction.Triggers>
                                    <i:EventTrigger EventName="LostFocus">
                                        <i:InvokeCommandAction Command="{Binding Path=DataContext.LostFocusCommand, 
                                        RelativeSource={RelativeSource AncestorType={x:Type local:HierarchicalView}}, Mode=OneWay}" 
                                        CommandParameter="{Binding Path=Node}"/>
                                    </i:EventTrigger>
                                    <i:EventTrigger EventName="GotFocus">
                                        <i:InvokeCommandAction Command="{Binding Path=DataContext.GotFocusCommand, 
                                        RelativeSource={RelativeSource AncestorType={x:Type local:HierarchicalView}}, Mode=OneWay}" 
                                        CommandParameter="{Binding Path=Node}"/>
                                    </i:EventTrigger>
                                </i:Interaction.Triggers>
                            </TextBox>
                            <ComboBox Height="20" Width="75" x:Name="combo" Margin="20 0 0 0" ItemsSource="{Binding Path=Data.Elements}" Visibility="{Binding Path=Data.Visibility}">
                                <i:Interaction.Triggers>
                                    <i:EventTrigger EventName="SelectionChanged">
                                        <i:InvokeCommandAction Command="{Binding Path=DataContext.SelectionChangedComboCommand, 
                                        RelativeSource={RelativeSource AncestorType={x:Type local:HierarchicalView}}, Mode=OneWay}" 
                                        CommandParameter="{Binding Path=Node}"/>
                                    </i:EventTrigger>
                                </i:Interaction.Triggers>
                            </ComboBox>
                        </StackPanel>
                        <go:GroupPanel x:Name="myGroupPanel" Padding="5" SurroundsMembersAfterDrop="True" />

                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="Drop">
                                <i:InvokeCommandAction Command="{Binding Path=DataContext.DropNodeCommand, 
                                            RelativeSource={RelativeSource AncestorType={x:Type local:HierarchicalView}}, Mode=OneWay}" 
                                            CommandParameter="{Binding Path=Node}"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>

                    </StackPanel>
                    <go:Group.Layout>
                        <go:GridLayout WrappingColumn="1" CellSize="1 1" Conditions="Standard GroupSizeChanged"/>
                    </go:Group.Layout>
                </Border>
            </DataTemplate>
        </go:DataTemplateDictionary>

Test:

using ArtOfTest.WebAii.Controls.Xaml.Wpf;
using ArtOfTest.WebAii.Core;
using ArtOfTest.WebAii.Silverlight;
using ArtOfTest.WebAii.TestTemplates;
using ArtOfTest.WebAii.Wpf;
using ArtOfTest.WebAii.Xaml;
using ArtOfTest.WebAii.TestAttributes;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using ArtOfTest.WebAii.Controls.HtmlControls;
using ArtOfTest.WebAii.Controls.HtmlControls.HtmlAsserts;
using ArtOfTest.WebAii.Controls.Xaml.Wpf;


namespace UnitTestProject2
{

    [TestClass]
    public class TelerikNUnitTest1 : BaseWpfTest
    {

        private TestContext testContextInstance;

        public WpfApplication foo_app { get; private set; }


        [TestMethod]
        public void Open_Application()
        {
            
            //TestContext.WriteLine("Start Unit Test");
            /// Create my own Settings object and then modify the defaults
            Settings mySettings = new Settings();
            mySettings.ClientReadyTimeout = 60000;

            /// Use my Settings object to construct my Manager object
            Manager myManager = new Manager(mySettings);
            myManager.Start();

            // Launch the application instance from its location in file system
            WpfApplication foo_app = myManager.LaunchNewApplication(@"C:\PathTo\Startup.exe");
            //TestContext.WriteLine("Opened application");

            /// Validate the title of the homepage
            ArtOfTest.Common.UnitTesting.Assert.IsTrue(foo_app.MainWindow.Window.Caption.Equals("MainWindow"));
            //TestContext.WriteLine("Validated window");

            ///Click the new project button
            FrameworkElement newProjButton = foo_app.MainWindow.Find.ByTextContent("New project...");
            //TestContext.WriteLine("Found element");
            newProjButton.User.Click();

            ///Send keys to the project name textbox
            FrameworkElement projNameTextBox = foo_app.MainWindow.Find.ByAutomationId("New_Proj_Text_Box");

            projNameTextBox.Wait.ForNoMotion(5000);
            projNameTextBox.User.Click();
            projNameTextBox.User.TypeText("PokeMoon", 100);
                 
            ///Select the View family
            FrameworkElement viewElement = foo_app.MainWindow.Find.ByTextContent("View");
            viewElement.User.Click();

            ///Click the "Create" Button 
            FrameworkElement createButton = foo_app.MainWindow.Find.ByTextContent("Create");
            createButton.User.Click();

            /// Wait for the canvas to load 
            FrameworkElement hierarchicalViewPage = foo_app.MainWindow.Find.ByAutomationId("Hierarchical_View");
            hierarchicalViewPage.Wait.ForExists();

            ///Click on the PROCESS element and then drag it into the canvas
///This is where I cannot find the element.
            FrameworkElement processElement = foo_app.MainWindow.Find.ByExpression(new XamlFindExpression("Key='GroupTemplate'", "|", "textcontent='PROCESS', "|", 'AutomationProperties.AutomationId='Canvas_Element'" ")).As<FrameworkElement>(); ;

            processElement.Wait.ForNoMotion(5000);
            processElement.User.Click();
            processElement.User.DragTo(100, 100);
        }

    }

}