Questions on UI for WPF Forum

1 answer

202 views

Is it possible to coerce the UpDown value?

I'm wondering if you can suggest an approach to achieve an effect I want (which I describe below). I don't think so but I thought I would check.

I'm using a NumericUpDown to show length values of type double. I want to be able to make the Up/Down buttons change the displayed value to an even multiples of a a whole number, regardless of the starting value or the direction (up vs down) of the button they hit. Is there a way to do this?

For example, suppose the initial value is 1.23.

If the user hits the "Up" button, I want the value to change from 1.23 to 2.00. But the next time he/she hits it I want it to change from 2.00 to 3.00
But if the user hits the "Down" button, I want the value to change from 1.23 to 1.00. The next time, I want it to change from 1.00 to 0.00

If there were separate "SmallChange" properties for the up and down directions, this would be easy. I could bind them and do the math whenever the value changes. But I only have the one "SmallChange" property.

If there were some way for me to insert a "CoerceValue" callback into the "Value" property, I could do that. But I don't believe that is possible. If it is, please tell me how

Is there any way to achieve this?

NumericUpDown

answered on 15 Nov 2019

6 answers

681 views

Where the downloaded OSM Map images stored in system location.?

Hi,

After installing the application, I am using OSM maps. That download images from OSM server and reused from cache location. Can i know where this downloaded images stored in system location.?

Thanks,

Map

answered on 15 Nov 2019

3 answers

312 views

compatibility with .net core 3

Are the WPF-controls completely comaptible with .net core 3? I developed a project. The xaml designer was working at first but sudddenly crashed(1st image) and then Visual Stutio 2019 crashed(2 image). When I reopen the project, xaml designer still crashed, then VS 2019 crashed.

With Framwork 4.7 is everything OK.

Installer and Visual Studio Extensions

answered on 15 Nov 2019

4 answers

594 views

How can I get first and last columns that are currently visible(in sight)?

Hi there,

I hope you can help me with this, attached a screenshot that shows what I am looking for.

Thanks,

Bahram Afsharipoor

GridView

answered on 15 Nov 2019

1 answer

107 views

What should be the target type should ChartAxis3D.LineStyle

I want to set the line style in my chart but I don't know what type to target in the style. The documentation does not not say. Line? Path? Something else?

ChartView3D

answered on 14 Nov 2019

1 answer

129 views

No transition on certain conditions

Hi All
I would like to prevent the transition control from showing any transition/animation under certain conditions. For example, the content is bound to an enum field, for certain enum values I dont want it to transition.
I have tried using IValueConverter

public class DispatchContentTransitionConverter : IValueConverter

{

public TransitionProvider TransitionForward { get; set; }

public TransitionProvider TransitionBackward { get; set; }

public TransitionProvider NoTransition { get; set; }

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

if (value == null) return NoTransition;

KeyValuePair<int, string> OSDispatchStatus = (KeyValuePair<int, string>)value;

if (OSDispatchStatus.Key == SettingsConsts.OS_DispatchStatus_ReadytoBookCollection)

{

return TransitionForward;

}

else

{

return NoTransition;

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

throw new NotImplementedException();

}

But for this option I cannot set a "No Transition" transition

Second option tried: Setting Duration of the transition on TransitionStatusChanged, but this option only applies to the "Next" transition called not the current

private void MainTransControl_TransitionStatusChanged(object sender, Telerik.Windows.Controls.TransitionControl.TransitionStatusChangedEventArgs e)

{

OrderDispatchModel VM = DataContext as OrderDispatchModel;

if (VM != null )

{

if (VM.OSDispatchStatus.Key == SettingsConsts.OS_DispatchStatus_ReadytoBookCollection)

{

this.MainTransControl.Duration = new TimeSpan(0, 0, 1);

}

else

{

this.MainTransControl.Duration = new TimeSpan(0, 0, 0);

}

else

{

this.MainTransControl.Duration = new TimeSpan(0, 0, 0);

}

Anyone have any ideas of how to implement this?

TransitionControl

answered on 14 Nov 2019

1 answer

214 views

RadRibbonView's child controls not focusable through keyboard

Hi everybody.

I'm facing an issue with telerik's RadRibbonView for WPF controls. I set the focus through code by calling ribbonView.Focus(), but afterwards I can not move focus to buttons inside ribbon view. I tried setting IsTabStop on ribbon buttons manually, but it didn't work either. Sample Xaml code is as follows:

<telerik:RadRibbonWindow

x:Class="WpfRadRibbonFocusIssue.MainWindow"

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

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

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

xmlns:local="clr-namespace:WpfRadRibbonFocusIssue"

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

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

Title="MainWindow"

Width="800"

Height="450"

mc:Ignorable="d">

<telerik:RadRibbonWindow.Resources>

<Style x:Key="FocusedStyle">

<Setter Property="Control.Template">

<Setter.Value>

<ControlTemplate>

<Rectangle Stroke="Blue" StrokeThickness="1" />

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</telerik:RadRibbonWindow.Resources>

<DockPanel>

<telerik:RadRibbonView

x:Name="ribbonView"

DockPanel.Dock="Top"

FocusVisualStyle="{StaticResource FocusedStyle}">

<telerik:RadRibbonTab Header="Tab 01">

<telerik:RadRibbonGroup Header="Group 01">

<telerik:RadRibbonButton IsTabStop="True" Text="Hello" />

<telerik:RadRibbonButton IsTabStop="True" Text="Hello 2" />

<telerik:RadRibbonButton IsTabStop="True" Text="Hello 3" />

</telerik:RadRibbonGroup>

</telerik:RadRibbonTab>

<telerik:RadRibbonTab Header="Tab 02">

<telerik:RadRibbonGroup Header="Group 02">

<telerik:RadRibbonButton Text="Command 01" />

<telerik:RadRibbonButton Text="Command 02" />

<telerik:RadRibbonButton Text="Command 03" />

</telerik:RadRibbonGroup>

</telerik:RadRibbonTab>

</telerik:RadRibbonView>

</DockPanel>

</telerik:RadRibbonWindow>

RibbonView and RibbonWindow

answered on 14 Nov 2019

4 answers

1.3K+ views

How to: Find DataTemplate-Generated Elements

Hi there,

I have a DataTemplate that is added as TitleTemplate to a RadDocumentPane - as you see below. So I need to access to RadToggleButton which is inside my DataTemplate in code behind, can you please tell me how can i do that?

<Window.Resources>

<DataTemplate x:Key="SyncTemplate">

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="Auto" />

<ColumnDefinition />

</Grid.ColumnDefinitions>

<ContentPresenter Content="{Binding}" Margin="0,5,0,0"/>

<telerik:RadToggleButton x:Name="xScrollSync" Grid.Column="1" HorizontalAlignment="Right" Content="XScroll Sync" Width="75" />

</Grid>

</DataTemplate>

</Window.Resources>

<Grid>

<telerik:RadDocking Margin="0 60 0 30" HorizontalAlignment="Stretch" Height="auto"

HasDocumentHost="False" Width="auto" VerticalAlignment="Stretch">

<telerik:RadSplitContainer telerik:ProportionalStackPanel.RelativeSize="1000, 200">

<telerik:RadSplitContainer x:Name="ganttViewSplit" InitialPosition="DockedLeft"

HorizontalAlignment="Stretch" Height="auto"

VerticalAlignment="Stretch" telerik:ProportionalStackPanel.RelativeSize="800,200">

<telerik:RadPaneGroup>

<telerik:RadDocumentPane x:Name="ganttDoc" TitleTemplate="{StaticResource SyncTemplate}">

<telerik:RadDocumentPane.Content>

<Grid>

</Grid>

</telerik:RadDocumentPane.Content>

</telerik:RadDocumentPane>

</telerik:RadPaneGroup>

</telerik:RadSplitContainer>

</telerik:RadDocking>

</Grid>

Docking

answered on 13 Nov 2019

10 answers

1.0K+ views

Beginner question - How to visually edit tabs?

Ok, stupid beginner question here, but how do I visually edit what goes into each tab for WPF UI Desktop using Visual Studio 2019?

When I drag the Tab Control into the design window, it places it just fine. But, if I try to add anything, the items do not show up per tab. Is there some trick to be able to edit a multi-tab XAML document visually?

TabControl

answered on 13 Nov 2019

3 answers

263 views

Cancel the split button

Hi
how can i make the color picker has only one button, so if the user press everywhere then the drop down open.

i use this event code to do this task but i hope there is a build in functionality to do that

private void RadColorPicker_MouseUp(object sender, MouseButtonEventArgs e)
{
if (e.OriginalSource is RadButton && sender is RadColorPicker)
(sender as RadColorPicker).IsDropDownOpen = true;
}

Thanks,
Akram

ColorPicker

answered on 13 Nov 2019