Questions on UI for WPF Forum

4 answers

388 views

I'm working with the getting started article to demonstrate a basic implementation of the DragDropManager by dragging between two ListBoxes - http://www.telerik.com/help/wpf/dragdropmanager-getting-started.html ;

The following code produces an ArgumentException error - The value "System.Windows.DataObject" is not of type "ManageDragDrop.ApplicationInfo" and cannot be used in this generic collection.

private void OnDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs args)

{

((IList)(sender as ListBox).ItemsSource).Add(args.Data);

}

DragAndDrop

answered on 09 Aug 2013

4 answers

227 views

Close button on tabs doesn't work reliably

Our project uses Prism with great success. One of our Prism regions is a RadTabControl and we programmatically add and remove tabs via Prism. Each of our tabs needs to have a close button so we've defined a ClosableTabItemHeader that looks like this:

<UserControl x:Class="Infrastructure.Controls.ClosableTabItemHeader"

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

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

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

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

mc:Ignorable="d"

d:DesignHeight="300"

d:DesignWidth="300">

<StackPanel Orientation="Horizontal">

<TextBlock Text="{Binding Screen.DisplayName}"

FontWeight="DemiBold" />

<telerik:RadButton Width="14"

Height="14"

Margin="5,0,0,0"

HorizontalAlignment="Center"

VerticalAlignment="Center"

Command="{Binding Screen.CloseCommand}"

Padding="0">

<Image Source="pack://application:,,,/Resources;component/Glyphs/24/cross.png"

Height="10"

Width="10" />

</telerik:RadButton>

</StackPanel>

</UserControl>

Our RadTabItems use our ClosableTabItemHeader as such...

<telerik:RadTabItem.Header>

<Controls:ClosableTabItemHeader DataContext="{Binding}" />

</telerik:RadTabItem.Header>

For months this worked without any problems at all. Lately, however, we're noticing that we sometimes have to click the close button two or more times for the command to execute. We've gone over our code with a fine tooth comb and from what we can tell the bound command simply isn't being called. We're out of ideas so we're hoping that Telerik might have one or two.

Greg

TabControl

answered on 08 Aug 2013

3 answers

628 views

MouseOver event not firing in WPF RadGridView

Hello,

I am using a radGridView in a WPF Application I'm building. I want that if My user will hover his mouse over the radGridView, if it is full with information, it will give me the row index in a messagebox (or something like that). For that, I'm trying to use the

~~MouseOver~~ MouseMove event. The Problem is, it doesn't fire, no matter what I do. Is it a known bug or am I doing any thing wrong?

Thanks in advance,

Yonatan

GridView

answered on 08 Aug 2013

2 answers

119 views

Cannot see RadPane AutoHide area in UISPY

Hi, I'm try to test the RadPane using GUI ATPS and I use UISPY to find parts of the RadPane but, with the RadPane area hidden, leaving just the AutoHide area/button on display, when I hover the mouse over this area it does not show up in UISPY.

Docking

answered on 08 Aug 2013

3 answers

104 views

Keep Customized Settingpane's showing

Hi Experts,

I have done a customized settingspane referenced to the MindMap example(But I change the RadDiagramShape instead of MindmapRootShape in example case). And in the my settingspane, I have a button to open a new window, when the window closed, the settingspane will be closed by default.

What I want is to keep its showing. Or when the window closed, the settingspane should be show again. How to do it like this ? Thanks very much. It is appreciate if you can provide me a simple example.

I know there is a solution to subscribe to window's Closed() event and reopen the settingspane. But the settingspane is a UserContorl, how can I achieve it? Example is appreciated. Thanks.

Diagram

answered on 08 Aug 2013

2 answers

372 views

Drag/Drop Multiple GridRow Items

I'm hoping somewhere here on the forums can help me as I've searched all over (on the forums) and in the documentation and examples and are coming up dry. Right now I'm building a system in where the end-user can take a product (or products) from a RadGridView and drag them over to a RadTreeView which contains Categories and onto a RadTreeViewItem.

The entire system as it stands works perfectly for a single GridViewItem but I need to be able to support multiple items. Unfortunately I have not been able to find any solution in the demos or on the forums (most posts are either WinForm related or use the deprecated RadDragDropManager). If anyone can shed some line on how I can handle multiple items with the newer DragDropManager that would be great.

Current code is attached.

private void CatalogManageCategoriesProductsDataGrid_OnDragInitialize(object sender, DragInitializeEventArgs e)

{

ViewModels.DropIndicationDetails details = new ViewModels.DropIndicationDetails();

var GridViewItem = e.OriginalSource as GridViewRow ?? (e.OriginalSource as FrameworkElement).ParentOfType<GridViewRow>();

var data = GridViewItem != null ? GridViewItem.Item : (sender as RadGridView).SelectedItem;

var payload = DragDropPayloadManager.GeneratePayload(null);

details.CurrentDraggedItem = data;

payload.SetData("DraggedData", data);

payload.SetData("DropDetails", details);

e.Data = payload;

e.DragVisual = new DragVisual()

{

Content = details,

ContentTemplate = CatalogManageCategoriesProductsDataGrid.Resources["ProductDragTemplate"] as DataTemplate

};

e.DragVisualOffset = e.RelativeStartPoint;

}

DragAndDrop

answered on 08 Aug 2013

1 answer

157 views

Saving Layout

I am trying to create a DependencyProperty to persist the layout of my docking panes. I am running into an issue when I float the docking pane, close the window and then call LoadLayout when opening the window again. I have narrowed the issue down to which event I catch to save the layout. If I catch the RadDocking unloaded event the xml produced in the save layout doesn't work like I would like it too. If I catch the closed event on the Window then life is good and the floating window restores correctly (because this is an attached property this is not a valid work around). The difference in the xml is the IsInOpenWindow attribute, when I save from the window closed this value is false and when I save from the RadDocking unloaded event the value is true. I understand why this occurs, the closed event occurs before the RadDocking unloaded event. My question is when is the best time(what is the best event to catch) to save the layout of the docking windows without requiring intervention from the user?

Thanks.

I am willing to provide code if that would help.

Docking

answered on 08 Aug 2013

4 answers

150 views

Exception on launching CodedUITest Builder

Hi,

I followed the instructions on the Telerik web page 'http://www.telerik.com/help/wpf/coded-ui-support.html' and copied the assembly Telerik.VisualStudio.TestTools.UITest.Extension.ExtensionsCore into the folder C:\Program Files (x86)\Common Files\Microsoft Shared\VSTT\11.0\UITestExtensionPackages. Then installed the assembley into GAC.

I am using VS 2012. When I try to use Coded UI Test Builder, it terminates with the following exception.

Application: CodedUITestBuilder.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: Microsoft.VisualStudio.TestTools.UITest.Extension.InvalidUITestExtensionPackageException
Stack:
   at Microsoft.VisualStudio.TestTools.UITest.Framework.UITestExtensionPackageManager.LoadAssemblies(System.String[])
   at Microsoft.VisualStudio.TestTools.UITest.Framework.UITestExtensionPackageManager..ctor()
   at Microsoft.VisualStudio.TestTools.UITest.Framework.UITestService.Initialize()
   at Microsoft.VisualStudio.TestTools.CodedUITest.Controls.CodedUITestBuilder.UITestBuilder.InitializeExtensions()
   at Microsoft.VisualStudio.TestTools.CodedUITest.Controls.CodedUITestBuilder.UITestBuilder.WindowActivated(System.Object, System.EventArgs)
   at System.Windows.Window.OnActivated(System.EventArgs)
   at System.Windows.Window.HandleActivate(Boolean)
   at System.Windows.Window.WmActivate(IntPtr)
   at System.Windows.Window.WindowFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at System.Windows.Interop.HwndSource.PublicHooksFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
   at MS.Win32.UnsafeNativeMethods.ShowWindow(System.Runtime.InteropServices.HandleRef, Int32)
   at System.Windows.Window.ShowHelper(System.Object)
   at System.Windows.Window.Show()
   at System.Windows.Application.<RunInternal>b__f(System.Object)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   at System.Windows.Threading.DispatcherOperation.InvokeImpl()
   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Windows.Threading.DispatcherOperation.Invoke()
   at System.Windows.Threading.Dispatcher.ProcessQueue()
   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
   at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame)
   at System.Windows.Threading.Dispatcher.Run()
   at System.Windows.Application.RunDispatcher(System.Object)
   at System.Windows.Application.RunInternal(System.Windows.Window)
   at System.Windows.Application.Run(System.Windows.Window)
   at Microsoft.VisualStudio.TestTools.UITest.CodedUITest.CodedUITestBuilder.Program.Main(System.String[])

If I remove the assembly from the folder, Coded UI Test Builder lauches without error but it does not record actions on Telerik controls as expected.

Is there anything I can do to avoid this error?

Thank you,

Gajan

General Discussions

answered on 08 Aug 2013

3 answers

256 views

How to drop on a RadListBoxItem?

Hi,

I'm using the DragDropManager to allow dragging from one RadListBox to another RadListBox. But I need to identify the exact RadListBoxItem on the target list box where the item was dropped onto.

I was hoping to achieve this by using this style for the target list box:

<Style x:Key="DroppableListBoxItem" TargeType="telerik:RadListBoxItem">

<Setter Property="AllowDrop" Value="true" />

</Style>

And applied this to the list box:

<telerik:RadListBox ItemContainerStyle="{StaticResource DroppableListBoxItem}"

ItemTemplate="{StaticResource ItemTemplate}"

ItemsSource="{Binding Path=MyItems}"/>

Note: I did not set AllowDrop=true on the list box itself (I tried it, but I made no difference).

But my DropHandler never returned the list box item, instead I was getting the list box itself.

BTW
Is there a way to highlight the list box item below the the mouse while dragging an item over it?

Thanks,
Thorsten

(I'm using RadControls for WPF Q2 2013)

DragAndDrop

answered on 08 Aug 2013

1 answer

91 views

How to change the Validation Error Image in the Rowindicator column

Hi Team,

I want to change the validation image shown in the rowindicator column(Refer attached image). Please provide the solution for this. If possible send me the sample project.

Thanks in Advance.

General Discussions

answered on 08 Aug 2013