Questions on UI for WPF Forum

0 answers

263 views

Telerik WPF Binaries with .NET 4.5 or Higher Runtime

Are there any versions of the Telerik WPF Binaries that use a .NET Runtime of 4.5 or greater? All of the versions I currently have available appear to be targeting a Runtime Version of 4.0.30319. This is in Visual Studio 2015 on Windows 10. The versions of the Telerik WPF Binaries I have available are 2015.3.1104 and 2017.2.503. I have tried using the .45 versions of both binaries and both appear to be targeting 4.0.30319.

We are currently seeing this exception in the Windows Event log after our application runs for a period of time and searching has found that one of the causes of this issue is known in .NET 4.0 and has been resolved in .NET 4.5 and higher.

This is the information from the Windows Event log for the issue causing our application to crash:

Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Runtime.InteropServices.COMException
at System.Windows.Media.Composition.DUCE+Channel.SyncFlush()
at System.Windows.Interop.HwndTarget.UpdateWindowSettings(Boolean, System.Nullable`1<ChannelSet>)
at System.Windows.Interop.HwndTarget.UpdateWindowPos(IntPtr)
at System.Windows.Interop.HwndTarget.HandleMessage(MS.Internal.Interop.WindowMessage, IntPtr, IntPtr)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(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 System.Windows.Threading.ExceptionWrapper.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)

If anyone can point me to a version of Telerik UI for WPF that uses a runtime of 4.5 or greater (or a list of released versions and the targeted runtimes) so we can try to see if that resolves our issue it would be much appreciated!

General Discussions

asked on 19 Feb 2018

6 answers

382 views

Intercept "Value cannot be converted" in code

Hi, I have RadPropertyGrid with auto generated property definitions. Some of the properties are numeric, and when something like letters is input in those properties, I get 'Value cannot be converted.." message.

So this is a settings form, and I should be able to forbid saving those properties if such conversion issue exists, but how can I check that on code side?

PropertyGrid

answered on 19 Feb 2018

2 answers

332 views

[Solved] PathStyle corrupts button image

I have some RadPathButtons (inside a WrapPanel) with attached commands. When the commands are enabled, I want the paths to show up in black. Instead they show up in grey, even though the attached commands are enabled and do execute when I click them. See the first attached image ("before_style.png") to see what I mean

<WrapPanel x:Name="ViewPanel"

Background="{StaticResource GsBackgroundDark}"

VerticalAlignment="Top"

HorizontalAlignment="Stretch"

Margin="0"

>

<tk:RadPathButton Margin="10 10 0 0"

Height="40"

Width="40"

IsEnabled="True"

Foreground="Black"

PathGeometry="{StaticResource HeightMapPathGeometry}"

Command="{Binding ShowHeightMapCmd}"

/>

<tk:RadPathButton Margin="10 10 0 0"

Height="40"

Width="40"

IsEnabled="True"

ToolTip="Show Scan Images"

PathGeometry="{StaticResource ImagesGeometry}"

Command="{Binding ShowImagesCmd}"

/>

</WrapPanel>

So, following Telerik's advice, I added a style resource to use in each of the button's PathStyle Property

<WrapPanel.Resources>

<Style x:Key="MyPathStyle" TargetType="{x:Type Path}">

<Setter Property="Fill" Value="Black"/>

<Setter Property="Stroke" Value="Black"/>

</Style>

</WrapPanel.Resources>

Then I set this resource as the PathStyle for each of the buttons. For example (see line #7 below)

01.<tk:RadPathButton Margin="10 10 0 0"

02. Height="40"

03. Width="40"

04. IsEnabled="True"

05. ToolTip="Show Scan Images"

06. PathGeometry="{StaticResource ImagesGeometry}"

07. PathStyle="{StaticResource MyPathStyle}"

08. Command="{Binding ShowImagesCmd}"

09./>

But then when I run my application again, the button icons don't look even recognizable. It's like they've expanded far beyond the boundaries of the button, when all I did was try to change the color. Look at the the second attached image ("after_style.png") to see what I mean

Can you tell me what I am missing? I never expected merely applying a color to the paths would change their geometry.

Buttons

answered on 19 Feb 2018

3 answers

201 views

Number format on count of string field

In the PivotGrid PivotFieldList demo, if I drag the field product on property aggregations, it shows the count of products.

But if I set a number format, it's ignored.

How can I use number format in this case?

PivotGrid

answered on 19 Feb 2018

5 answers

774 views

PrintPreview Control select printer and suppress PrintDialog

Hello,

I use the PrintPreview Control with the PrintAndExportExtensions.cs as shown in the GridView/PrintPreviewWithSpreadsheet example, which works very nicely.

Now I would like to suppress the Windows PrintDialog which is shown after clicking the print button, since it blocks the UI and does not show the parameters correctly (instead of the previously in the PrintPreview Control selected parameters the dafault values are displayed but it seems the correct values are pased to the printer).

For selecting the printer, I would like to add a ComboBox to my view. Is there a way to pass the selected printer as a string or with PrintSettings to the RadSheet or the PrintPreview Control/ViewModel and suppress the Windows PrintDialog?

I also had a look at the example from this post: https://www.telerik.com/forums/printing-and-print-previewing-my-grid#r3qTgvsrCkiSP_PxTMubzA

but the PrintSettings in the CreateDocument method aren't used.

Any help would be appreciated.

Best regards

GridView

answered on 19 Feb 2018

2 answers

146 views

Issue with VisualStudio2013 theme and ColumnWidths

Hi,

I am currently using the RadGridView and using the Office2016 theme, I am trying to switch to VisualStudio2013 theme but have discovered that it does not seem to work with ColumnWidth="*" and more generally when using something such as Width="25*" within a column header within a listbox itemtemplate. I also noticed that when stretching the window out and back the visualstudio2013 theme flickered a lot.

I have made a very simple project which highlights the issue, it uses the latest UI for WPF from the website.

It can be found here : https://www.dropbox.com/s/i9fp4g4a8bilqv9/TelerikRadGridViewBug.zip?dl=0

Also attached a screenshot showing the program running.

Thanks,
Martin

GridView

answered on 16 Feb 2018

3 answers

240 views

Text indicator

Is there a way to add a text indicator inside a radial gauge?

I have already defined a radial gauge that shows values from 0 to 100 on its radial scale, and the current value in the center of the gauge. I would also like to add a similar gauge that shows text instead numbers in the center. E.g. "Processing", "Calculating", "Complete", ... Human readable status text.

RadialScale.Indicators seems to be a UIElementCollection, so I tried adding a TextBlock object in the collection. However, it is not shown.

Gauges

answered on 16 Feb 2018

1 answer

725 views

[Solved] Customize GridViewToggleRowDetailsColumn

I have a GridViewToggleRowDetailsColumn in the RadGridView. Now I want two things.

Using down-arrow and up-arrow instead of plus and minus icon. The down-arrow is attached.
I want the icon stick on the top. Now it is in the middle vertically.

Thanks for the sample code help.

GridView

answered on 16 Feb 2018

11 answers

787 views

GridViewCell Background/Border changes

Greetings,

Today, we upgraded from the Q3/2010 controls to the Q2/2011 controls on our application. For the most part, everything upgraded without any problems. However, there's one discrepancy that has me stumped. I'm not sure about the best way to resolve this, so i wanted to get your help.

To illustrate the problem, I have a very simple RadGridView defined. The second column has a Background of "GhostWhite":

<Telerik:RadGridView x:Name="GridView" AutoGenerateColumns="False" Width="500" Height="500">

<Telerik:RadGridView.Columns>

<Telerik:GridViewDataColumn UniqueName="DateTime" Header="Date/Time"

DataMemberBinding="{Binding DateTime}" IsReadOnly="True"

DataType="{x:Type System:DateTime}" IsFilterable="True" />

<Telerik:GridViewDataColumn UniqueName="Value" Header="Value"

Background="GhostWhite" DataMemberBinding="{Binding Value}"

DataType="{x:Type System:Decimal}" IsFilterable="True" />

</Telerik:RadGridView.Columns>

</Telerik:RadGridView>

When I populate my grid with items, the cells in the second column are missing the left side of their border. If I remove the Background attribute on the second column the cell's left side is back and looks just fine.

I was able to use Expression Blend/WPF Inspector to locate the "PART_CellBorder" border. It looks like the BorderThickness here may not account for the left side.

Is this by design? Is there are work around?

Thanks!

GridView

answered on 16 Feb 2018

2 answers

108 views

[Solved] SelectionChanged fires on non-focused item

When I'm opening a RadCombobox, focus an item with the mouse, moving the mouse pointer out of the Combobox and thus loosing the focus, SelectionChanged is fired when I'm pressing the Enter key. I'd expect that no item would be selected in this case since no item is visibly highlighted, but instead an item gets selected (probably the item that was highlighted last by moving the mouse pointer).

Is this behavior intended?

ComboBox

answered on 16 Feb 2018