Questions on UI for WPF Forum

3 answers

216 views

Just crash with

Just now installed Telerik for WPF

Opening Visual Studio, creating project Telerik C# WPF Application, selecting "Blank" and "Finish".

Opening MainWindow.xaml, dragging RadRichTextBox from toolbox and dropping into Grid.

But here is Object reference not set in output log. When running - it crashes. Point.

RadButton works correctly.

Result code is here: https://pastebin.com/yVSNDbMH

Visual Studio is 2017

OS is Windows Server 2012

Locale is ru-RU

Telerik Installer is TelerikUIForWpfSetup_2017_3_0814_1.exe

C:\Program Files (x86)\Telerik\UI for WPF R2 2017\Binaries\WPF40\Telerik.Windows.Controls.RichTextBoxUI.dll file version is 2017.2.614.40

If you have different version and haven't problem, please give me installer or just this DLL, I'll try fix or search a bug with .NET Reflector

RichTextBox

answered on 25 Aug 2017

11 answers

193 views

[Solved] Do you have any means for a variety of UI color expresion?

Your color Themes (VisualStudio 2013,Office2013,Windows 8 touch,Windows 8,Expression Dark, ... e.t.c) give not very rich color expression. For example, RadTreeListView is looked as in RadTreeListView.PNG file attached. What about your Green Theme - it is somewhat dark. Do you have any means for a variety of coloring?

General Discussions

answered on 25 Aug 2017

1 answer

316 views

SelectedItem reset when unloading?

I have a RadAutoCompleteBox in RadGridView CellEditTemplate

public class AutoCompleteCell : RadAutoCompleteBox

{

public AutoCompleteCell()

{

SelectionMode = AutoCompleteSelectionMode.Single;

Unloaded += unloaded;

Loaded += loaded;

}

private void loaded(object sender, RoutedEventArgs e)

{

//all has value

string searchText = SearchText;

object selectedItem = SelectedItem;

}

private void unloaded(object sender, RoutedEventArgs e)

{

string searchText = SearchText; //has value

object selectedItem = SelectedItem; //no value

}

SearchText is in dropdown ItemsSource, when I click the cell and enter edit mode, Loaded event fired and both SearchText and SelectedItem has value, but when I just press Esc to exit edit mode and in Unloaded event, SearchText still has value but SelectedItem is null.

Why this happened and how to fix it? Thanks.

<controls:AutoCompleteCell SelectedItem="{Binding Value, Mode=TwoWay}" ItemsSource="{Binding Source, Mode=OneWay}" SearchText="{Binding Header, Mode=OneWay}" />

"Header" is returned from "Value".

AutoCompleteBox

answered on 24 Aug 2017

7 answers

920 views

RadComboBox with RadGridView

I would like to have a combobox that displays a text value when an item is selected but displays a grid with headers when the user clicks on the combobox (see attachment). I used the SelectionBoxTemplate to set the selected item text value and created a comboboxitem with a radgridview inside of it. I cannot use the SelectionBoxTemplate with the radgridview. Is there something wrong with how I have it setup? Also, the radgridview does not update the combobox when an item is selected? How can I make this function like a normal combobox? I don't need autocomplete.

<telerik:RadComboBox SelectionBoxTemplate="{StaticResource SelectionBoxTemplate}"
IsEditable="True" Height="25" Width="200">
<telerik:RadComboBox.Items>
<telerik:RadComboBoxItem>
<telerik:RadComboBoxItem.Template>
<ControlTemplate>
<telerik:RadGridView x:Name="RadGridView1" ShowGroupPanel="False" CanUserFreezeColumns="False"
RowIndicatorVisibility="Collapsed" IsReadOnly="True"
IsFilteringAllowed="False" ItemsSource="{Binding Tools}"
Width="200" Height="150" SelectedItem="{Binding Assignment, Mode=TwoWay}" AutoGenerateColumns="False">
<telerik:RadGridView.Columns>
<telerik:GridViewColumn Header="Item #" HeaderCellStyle="{StaticResource GridViewHeaderCellDefault}">
<telerik:GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Style="{StaticResource TextBlockDefault}" Text="{Binding ItemNumber}" />
</DataTemplate>
</telerik:GridViewColumn.CellTemplate>
</telerik:GridViewColumn>
<telerik:GridViewColumn Header="Tool Name" HeaderCellStyle="{StaticResource GridViewHeaderCellDefault}">
<telerik:GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Style="{StaticResource TextBlockDefault}" Text="{Binding ToolName}"/>
</StackPanel>
</DataTemplate>
</telerik:GridViewColumn.CellTemplate>
</telerik:GridViewColumn>
</telerik:RadGridView.Columns>
</telerik:RadGridView>
</ControlTemplate>
</telerik:RadComboBoxItem.Template>
</telerik:RadComboBoxItem>
</telerik:RadComboBox.Items>
</telerik:RadComboBox>

ComboBox

answered on 24 Aug 2017

1 answer

131 views

Create ChartPalette from colour

How to convert a list of System.Drawing.Color() to ChartView.Palette?

Chart

answered on 23 Aug 2017

4 answers

355 views

Display 1 values with logarithmic scale

Hi, I'm struggling with a small display issue:

I have a bar chart with logarithmic Y scale. Evetyng is ok but if a bar has the value of 1 is not displayed. And this is correct because the logarithm of 1 is 0.
So there is no difference between a bar is not present and a bar with value 1.

I tried to set the minimum value of 0.5 but it's only displayed a gap between the X axis and the bars.

Is there a way to display small Bar when the values is 1? Like setting a small border or a padding?

ChartView

answered on 23 Aug 2017

3 answers

317 views

Pan without Ctrl being pressed?

IsPanEnabled="True" enables panning, but you need to hold down the Ctrl key. Is it possible to change this to the following?

Panning: Simple click
Selecting: Shift+click

Diagram

answered on 23 Aug 2017

1 answer

195 views

TransitionControl (or TransitionPresenter?) in a Frame

Hi,

I'm trying to replace the ContentPresenter in a Frame with the TransitionControl as described here:

http://docs.telerik.com/devtools/wpf/controls/radtransitioncontrol/features/radtransition-integration-with-content-controls

If I follow this example, no content is displayed.

I also tried using TransitionPresenter, which is better in that the content does show up, but there are no transition animations?

I have successfully used a TransitionControl stand-alone, but I'm hoping to use the navigation features of Frame along with transition animations.

What am I doing wrong?

<Frame x:Name="NavFrame" NavigationUIVisibility="Visible" Margin="0,50,0,0">

<Frame.Template>

<ControlTemplate TargetType="{x:Type Frame}">

<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}">

<teleriktp:TransitionPresenter CurrentContent="{TemplateBinding Content}" Duration="0:0:3">

<teleriktp:TransitionPresenter.Transition>

<telerikTransitions:WaveTransition />

</teleriktp:TransitionPresenter.Transition>

</teleriktp:TransitionPresenter>

</Border>

</ControlTemplate>

</Frame.Template>

</Frame>

TransitionControl

answered on 23 Aug 2017

4 answers

257 views

[Solved] RadCartesianChart X-axis value as ' 0 '

How to make the X-axis at '0' in stead of '1'?

ChartView

answered on 23 Aug 2017

1 answer

143 views

[Solved] RadTimeBar dll issue

What is the best way to customize the timebar selection?

Could we simply add the XAML with the style for the selection, overwrite it and keep using the dll's that contain the xaml (meaning not the noXaml dll's as recommended) ?

Or is there any side effect you'd expect?

TimeBar

answered on 23 Aug 2017