Questions on UI for WPF Forum

8 answers

406 views

Drag and drop autoscroll

Is it possible to automatically scroll a RadListBox when dragging an item over the top or bottom of the ListBox?

ListBox

answered on 17 May 2016

3 answers

354 views

Problem with multiple main windows on different threads

Hello,

I have a program that, each time I open a new file on it creates a new main window on its own thread.

Everything is working OK, except on the following scenario:

A file in opened in the application main window.
A second file is opened in a new main window.
In this second main window, a RadWindow is opened.
The RadWindow is moved.

At this time, the application crashes with the following exception and stack trace:

The calling thread cannot access this object because a different thread owns it. Exception {InvalidOperationException}

     WindowsBase.dll!System.Windows.Threading.Dispatcher.VerifyAccess()   Unknown
    PresentationFramework.dll!System.Windows.Application.MainWindow.get()   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.GetDpiIndependentPrimaryScreenSize()   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.HandleGetMinMaxInfo(System.IntPtr hwnd = {System.IntPtr}, System.IntPtr wParam = {System.IntPtr}, System.IntPtr lParam = {System.IntPtr}, out bool handled = false)   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.WndProc(System.IntPtr hwnd = {System.IntPtr}, int msg = 36, System.IntPtr wParam = {System.IntPtr}, System.IntPtr lParam = {System.IntPtr}, ref bool handled = false)   Unknown
    PresentationCore.dll!System.Windows.Interop.HwndSource.PublicHooksFilterMessage(System.IntPtr hwnd = {System.IntPtr}, int msg, System.IntPtr wParam = {System.IntPtr}, System.IntPtr lParam = {System.IntPtr}, ref bool handled = false)   Unknown
    WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = {System.IntPtr}, int msg, System.IntPtr wParam = {System.IntPtr}, System.IntPtr lParam = {System.IntPtr}, ref bool handled = false)   Unknown
    WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)   Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)   Unknown
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler = null)   Unknown
    WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)   Unknown
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = {System.IntPtr}, int msg, System.IntPtr wParam = {System.IntPtr}, System.IntPtr lParam = {System.IntPtr})   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!MS.Win32.HwndSubclass.DefWndProcWrapper(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!MS.Win32.HwndSubclass.DefWndProcWrapper(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)   Unknown
    [Native to Managed Transition]
    [Managed to Native Transition]
    WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame = {System.Windows.Threading.DispatcherFrame})   Unknown
    PresentationFramework.dll!System.Windows.Window.ShowHelper(object booleanBox)   Unknown
    PresentationFramework.dll!System.Windows.Window.ShowDialog()   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.InternalWindow.WindowWithNoChromeWindowHost.Open(bool isModal = true)   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.WindowBase.ShowWindow(bool isModal = true)   Unknown
    Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.RadWindow.ShowDialog()   Unknown

Note that doing the same on the first main window doesn't crash the application.

Window

answered on 17 May 2016

1 answer

42 views

Bezier line form has been changed after save and then reload

Dear all Telerik UI for WPF team members.

Recently I have encountered a couple of problems with RadDiagram.

Please help our team to proceed forward soon.

My question is below.

When we draw a diagram via your RadDiagram, bezier and spline is perfect form as we expected.

But, after we decided to save this form and to check whether this form is correct, we reloaded it.

The problem is here.

Reloaded diagram is malformed (just we thought)

Please check attached image file (before & after save a diagram) and our code.

            <telerik:RadDiagram x:Name="diagram" Grid.Row="1" Grid.Column="1"
                                Width="900" Height="700"
                                SelectedItem="{Binding SelectedItem}" IsZoomEnabled="False"
                                IsSnapToItemsEnabled="False" IsSnapToGridEnabled="False"
                                GraphSource="{Binding GraphSource}"
                                Margin="{DynamicResource UIBorderMargin}">
                <primitives:ItemInformationAdorner.AdditionalContent>
                    <telerik:SettingsPane Diagram="{Binding ElementName=diagram}" />
                </primitives:ItemInformationAdorner.AdditionalContent>
            </telerik:RadDiagram>

Thanks in advance.

Brian Kwon from South Korea.

Diagram

answered on 17 May 2016

3 answers

99 views

RootItem Image

Hello,

I have a problem about BreadCrumb Sample,when I set the default Path to the root,

the BreadCrumb did't show the root Image.how can I fix it?

BreadCrumb

answered on 17 May 2016

4 answers

61 views

On Win 10 system, when drag a shape the previewkeydown event trigger

On win10 system, when drag a shape, the driagrm's previewkeydown event trigger.

on win7 system this case is not exist,

on win10 system, when open the vs with administrator, the case is also not exist

attached is the demo

Is any resolution to resolve this issue

Diagram

answered on 17 May 2016

14 answers

278 views

DataContext lost when using RadFluidContentControl

Hi,
I have a little problem when i use the TileView control in conjonction with the RadfluidContentControl : the datacontext is not inherited by the ContentElement child.
Here is my code:

<Window.Resources>

<local:TileConverter x:Uid="conv:TileConverter_1"

x:Key="TileConverter" />

<Style x:Uid="Style_17"

TargetType="telerik:RadTileView"

x:Key="TileGraphStyle">

<Setter x:Uid="Setter_185"

Property="IsItemDraggingEnabled"

Value="True" />

<Setter x:Uid="Setter_186"

Property="MaximizeMode"

Value="One" />

<Setter x:Uid="Setter_187"

Property="IsItemsAnimationEnabled"

Value="False" />

<Setter x:Uid="Setter_188"

Property="PreservePositionWhenMaximized"

Value="True" />

<Setter x:Uid="Setter_189"

Property="telerik:TileViewPanel.IsVirtualized"

Value="True" />

<Setter x:Uid="Setter_190"

Property="IsAutoScrollingEnabled"

Value="True" />

<Setter x:Uid="Setter_191"

Property="TileStateChangeTrigger"

Value="SingleClick" />

<Setter x:Uid="Setter_192"

Property="MinimizedColumnWidth"

Value="300" />

<Setter x:Uid="Setter_193"

Property="MinimizedRowHeight"

Value="300" />

<Setter x:Uid="Setter_194"

Property="MinimizedItemsPosition"

Value="Left" />

</Style>

<DataTemplate x:Key="LargeTemplate">

<StackPanel Orientation="Horizontal">

<TextBlock Background="AliceBlue"

Text="This is LargeTemplate" />

<TextBlock Background="AliceBlue"

Text="{Binding Text}" />

</StackPanel>

</DataTemplate>

<DataTemplate x:Key="SmallTemplate">

<StackPanel Orientation="Horizontal">

<TextBlock Background="Azure"

Text="This is SmallTemplate" />

<TextBlock Background="Azure"

Text="{Binding Text}" />

</StackPanel>

</DataTemplate>

<DataTemplate x:Key="RadFluidContentControlTemplate">

<telerik:RadFluidContentControl ContentChangeMode="Manual"

TransitionDuration="0:0:.5"

LargeContentTemplate="{StaticResource LargeTemplate}"

SmallContentTemplate="{StaticResource SmallTemplate}"

ContentTemplate="{StaticResource SmallTemplate}"

State="{Binding TileState, Converter={StaticResource TileConverter}}">

</telerik:RadFluidContentControl>

</DataTemplate>

</Window.Resources>

<Grid>

<telerik:RadTileView x:Uid="tileView1"

x:Name="tileView1"

IsDockingEnabled="True"

Style="{StaticResource TileGraphStyle}"

ContentTemplate="{StaticResource RadFluidContentControlTemplate}"

ItemsSource="{Binding Items}">

<telerik:RadTileView.ItemTemplate>

<DataTemplate x:Uid="DataTemplate_4">

<TextBlock x:Uid="TextBlock_11"

Text="{Binding Level}" />

</DataTemplate>

</telerik:RadTileView.ItemTemplate>

</telerik:RadTileView>

</Grid

The viewmodels :

public class MainViewModel : ViewModelBase

{

public MainViewModel()

{

this.Items = new List<Item>()

{

new Item() { Level = 1, Text ="AAAA"},

new Item() { Level = 2, Text ="BBBB"},

new Item() { Level = 3, Text ="CCCC"},

new Item() { Level = 4, Text ="DDDD"},

};

}

public IList<Item> Items { get; private set; }

}

public class Item : ViewModelBase

{

private TileState tileState;

public int Level { get; set; }

public string Text { get; set; }

public TileState TileState

{

get

{

return this.tileState;

}

set

{

if (this.tileState != value)

{

this.tileState = value;

this.NotifyPropertyChanged("TileState");

}

If i suppress the RadfluidContentControl all is fine and i see the right text displayed.
Any clues ?

- Cedric -

TileView

answered on 16 May 2016

1 answer

111 views

Change Theme for Image Editor

Hi Team,

I'm new to telerick controls and using image editor control. i would like to know how to change theme for this control like i want to configure visual studio 2013 dark theme;

Give some sample code or explain the steps.

Regards

Hema

ImageEditor

answered on 16 May 2016

3 answers

142 views

RadColorEditor not setting value when object implements INotifyPropertyChanged

With a basic RadPropertyGrid, if I set the Item to an object with a System.Windows.Media.Color property, when I pick a color in the editor, it will properly call the property setter and update Test1's Color value.

public class Test1
{
public System.Windows.Media.Color Color { get; set; }
}

If I use the following Test2 class instead, changing the color in the property grid will not call the property setter and the value in the box will not get updated.

public class Test2 : INotifyPropertyChanged
{
public System.Windows.Media.Color Color { get; set; }
public event PropertyChangedEventHandler PropertyChanged;
}

PropertyGrid

answered on 16 May 2016

3 answers

299 views

RadRichTextBox hyperlink dialog issue

Hi,

We're using version 2015.2.728.45 of Telerik UI for WPF and we are encountering an issue with the hyperlink dialog. Here is the related xaml code used in the ribbon of the application:

<telerik:RadRibbonButton LargeImage="pack://application:,,,/Telerik.Windows.Controls.RichTextBoxUI;component/Images/MSOffice/32/inserthyperlink.png" telerik:RadRichTextBoxRibbonUI.RichTextCommand="{Binding Path=ShowInsertHyperlinkDialogCommand}" telerik:ScreenTip.Description="Create a link to a Web page, a picture or an e-mail address." telerik:ScreenTip.Title="Insert Hyperlink" Size="Large" Text="Hyperlink" />

Each time we insert/update an hyperlink using the "Insert Hyperlink" modal dialog, we get an extra "http://" prefix added to the beginning of the address. What should we do to avoid this behaviour?

Thanks for your help,

Sébastien

RichTextBox

answered on 16 May 2016

0 answers

139 views

Creating a ScheduleView that synchronizes with Outlook

Hi,

At the moment, upon loading my usercontrol, I programatically load all my calendar events. I export my outlook calendar folder then import it into the schedule view. I'm wondering what is the best approach to integrate with outlook? I created methods to trigger OnAppointmentDelete and OnAppointmentCreate, such that it'll update outlook. But is this the ideal solution?

private void LoadOutlook()
{
try
{
var outlook = new ApplicationClass();
var OutlookNS = outlook.GetNamespace("MAPI");

MAPIFolder f = OutlookNS.GetDefaultFolder(OlDefaultFolders.olFolderCalendar);

CalendarSharing cs = f.GetCalendarExporter();
cs.CalendarDetail = OlCalendarDetail.olFullDetails;
cs.StartDate = new DateTime(2011, 11, 1);
cs.EndDate = new DateTime(2018, 12, 31);
var tempPath = Path.GetTempPath();
var tempCalendar = tempPath + "cal.ics";
cs.SaveAsICal(tempCalendar);
using (TextReader txtReader = new StreamReader(tempCalendar))
{
this.Import(txtReader);
}
}
catch
{

}
}

ScheduleView

asked on 16 May 2016