Questions on UI for WPF Forum

1 answer

296 views

Style Setter KeyboardNavigation.TabNavigation

I'm trying to set the KeyboardNavigation.TabNavigation property to Local using a style template. For some reason, it's not working, even in this most basic format:

<StackPanel>

<telerik:RadMaskedNumericInput Name="radMaskedNumericInput1">

<telerik:RadMaskedNumericInput.Style>

<Style TargetType="telerik:RadMaskedNumericInput">

<Setter Property="KeyboardNavigation.TabNavigation" Value="Local"/>

<Setter Property="Mask" Value="#3.4"></Setter>

</Style>

</telerik:RadMaskedNumericInput.Style>

</telerik:RadMaskedNumericInput>

<telerik:RadMaskedNumericInput Name="radMaskedNumericInput2" KeyboardNavigation.TabNavigation="Local" Mask="#6.3"/>

</StackPanel>

The setter of the Mask property works, but the tab navigation in radMaskedInput1 still acts like it's set to Continue. The tab navigation in radMaskedNumericInput2 properly only puts the cursor in the input box once and then exits on the next tab.

I'm using RadControls for WPF v.2011.2.920.40

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 29 May 2012

15 answers

851 views

Edit a copy unavailable

I was trying the new VS2010 with Blend 4 RC, Edit a copy is unavailable/grayed out. All styles under Edit additional styles are grayed out from Telerik components. Now I cannot edit RoyStyle and such, please help me.

GridView

answered on 29 May 2012

3 answers

145 views

Visual Studio 2010 Performance Issues

Hello,

I am having big performance issues with UI coding in Visual Studio 2010. The IDE itself hangs for few seconds when scrolling or editing few characters in the project XAML file. The code behind is not a problem and it works okay. There are no other extensions installed than Telerik WPF Extensions and the Visual Studio has all latest updates.

So my guess is, it has something to do with controls, because it works much faster on a project without Telerik controls. The problem is frustrating, I spend hours coding a simple interface instead of minutes, just because I wait for IDE to respond. I have already tried changing the Visual Studio settings such as: disabling Toolbox auto population, changing to software rendering, and few tweaks. The Studio hangs when editing XAML code, no matter what, so it must be something in connection with my Telerik setup. I tried this on my workstation and my laptop and it works the same.

The problem is either bad XAML code (too long perhaps - 285 lines), or something with controls configuration.

Can you please help me?

Thank you,

Dal Rupnik

General Discussions

answered on 29 May 2012

3 answers

245 views

[Solved] Q2 2011 Upgrade Wizard Issues Resolved

We identified several issues with our new Upgrade Wizard shortly after our Q2 2011 release.

The following circumstances are known to cause issues when using the Upgrade Wizard:

Having any invalid references in your project (marked with a warning sign in Visual Studio)
Having COM references in your project
Holding a project reference to a project which has not yet been built
Holding a project reference to a project whose output assembly name differs from the project's name

All of the above issues have already been addressed and an update has been released through the Visual Studio Online Gallery:
Telerik WPF VSExtensions

You should be able to use the Visual Studio 2010 Extension Manager to download the update.

Best regards,
The Telerik Team

Installer and Visual Studio Extensions

answered on 29 May 2012

3 answers

183 views

Drag and Drop Nested Items

Hello all,

I am trying to create a hierarchical tree view (about 3 levels), where the user can drag/drop to re-order, or move items only within the same level, but cannot move items between levels. Basically I want to maintain a strict hierarchy of items (C's belong only to B's and B's belong only to A's).

I have tried using a hierarchical data template for my view model (which implements INotifyPropertyChanged) but can only reorder the top level nodes and cannot reorder the child nodes.

Thanks for any help!

TreeView

answered on 29 May 2012

3 answers

132 views

Editting cells

This is driving me nuts.
When I allow the columns to be AutoGenerated I can they can be editted, that is the original values are shown and can be modified ( and the data persists ). If I define the fields manually, as below, then the cell is blanked prior to editiing and when the cell loses focus the editted cell reverts to its original value. I'm sure that I am doing something stupid but cannot work this out.

<telerik:RadGridView

Name="rgv1"

RowIndicatorVisibility="Visible"

Grid.Column="1" Grid.Row="2"

ItemsSource="{Binding ValidUsers}"

SelectedItem="{Binding SelectedValidUser, Mode=TwoWay}"

IsSynchronizedWithCurrentItem="True"

AutoGenerateColumns="False"

EditTriggers="CellClick">

<telerik:RadGridView.Columns>

<telerik:GridViewDataColumn DataMemberBinding="{Binding userPassword, Mode=TwoWay}" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

Thanks

GridView

answered on 29 May 2012

3 answers

126 views

LineSeries exaggerated values

I'm currently evaluating switching our charting solution to Telerik. I've noticed that small changes in the Y values can be magnified when fully zoomed out. I'm not sure why this is or how I can minimize it.

It certainly makes the data look as though there are values that don't really exist.

As an example I have two screen shots of the chart. I've put the trackinfo at the same point in both so that you can see that the massive spike to the right of it is the same tiny ripple seen in the other shot.

Telerik_ChartViewer_LineSeries_ExaggeratedValues1.png - Zoomed out version, large spikes
Telerik_ChartViewer_LineSeries_ExaggeratedValues2.png - Zoomed in version, little ripples

Thanks

ChartView

answered on 29 May 2012

2 answers

1.0K+ views

[Solved] Disable text editing but keep scrolling capabilities

Hi,

I came across this thread where they are asking the same question I have, however it's for Silverlight and two years old so I'd like to see if there's any change in WPF and 2012. The question is:
Is it possible to disable text selection and editing in an RTB but keep the scrollbars active so people can view all the content?

Thanks

RichTextBox

answered on 28 May 2012

0 answers

145 views

Error changing column visibility with RadContextMenu

I am trying to build a simple context menu for changing column visibility that is virtually identical to the sample file included in this post http://www.telerik.com/community/forums/wpf/gridview/changing-column-visibility-in-a-context-menu.aspx. But I'm encountering the following error:

An unhandled exception of type 'System.InvalidOperationException' occurred in PresentationFramework.dll

Additional information: Specified element is already the logical child of another element. Disconnect it first.

Here's a snippet of my markup:

<telerik:RadGridView Name="MyGridView" ItemsSource="{Binding Source={x:Static local:MainWindow.MyData}}" AutoGenerateColumns="False">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Item}" UniqueName="Item" TextAlignment="Center">
<telerik:GridViewDataColumn.Header>
<TextBlock Text="Item Name" HorizontalAlignment="Center"></TextBlock>
</telerik:GridViewDataColumn.Header>
</telerik:GridViewDataColumn>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Category}" UniqueName="Category" TextAlignment="Center">
<telerik:GridViewDataColumn.Header>
<TextBlock Text="Item Category" HorizontalAlignment="Center"></TextBlock>
</telerik:GridViewDataColumn.Header>
</telerik:GridViewDataColumn>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Desc}" UniqueName="Desc" TextAlignment="Center">
<telerik:GridViewDataColumn.Header>
<TextBlock Text="Description" HorizontalAlignment="Center"></TextBlock>
</telerik:GridViewDataColumn.Header>
</telerik:GridViewDataColumn>
</telerik:RadGridView.Columns>
<telerik:RadContextMenu.ContextMenu>
<telerik:RadContextMenu Opened="RadContextMenu_Opened">
<telerik:RadContextMenu.ItemTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding IsVisible}" Content="{Binding Header}" />
</DataTemplate>
</telerik:RadContextMenu.ItemTemplate>
</telerik:RadContextMenu>
</telerik:RadContextMenu.ContextMenu>
</telerik:RadGridView>

I am evaluating trial version 2012_1_326.
Your help is appreciated.

GridView

asked on 28 May 2012

1 answer

400 views

ListBoxItem doublecllick .. get MVVM

Hi,

thank's for all xour help my listbox ist fine, but one more question. I have a EventSetter on my ListBoxItem

<EventSetter Event="MouseDoubleClick" Handler="ListBoxItem_MouseDoubleClick"/>

Code:

void ListBoxItem_MouseDoubleClick(object sender, RoutedEventArgs e)

{

Frame pageFrame = null;

pageFrame = helper.FindChild<Frame>(Application.Current.MainWindow, "MainFrame");

if (pageFrame != null)

{

var content = pageFrame.Content as Page;

var targetPage = content is Trichter1 ? new KontaktDetailAnsicht(myContact) as Page : new Trichter1() as Page;

pageFrame.NavigateToExample(targetPage);

}

But how do i get the ViewModel? I tried Contact myContact = e.OriginalSource as Contact, but myContact is null? How do i get Values of my doubleclicked ListboxItem as my ViewModel?

Thanks
Regards
Rene

ListBox

answered on 28 May 2012