Questions on UI for WPF Forum

4 answers

312 views

Offline documentation for WPF UI Help Viewer format

Hi there,

When I try to add help content to MS Help Viewer 2.3 I get a error message: For security reason DTD is prohibited in this XML document...

For full detail see attached screenshot.

And my question is what can I do on my side to add WPF Help File content to my help viewer?

General Discussions

answered on 21 Jan 2020

1 answer

650 views

custom usercontrol not updating

I created a custom splashscreen usercontrol with a custom viewmodel (as explained in the docs) but when i try to update the values on the viewmodel only the original values are shown and the new values are ignored? how is this possible?

If i used the standard splashscreen it works

SplashScreen

answered on 21 Jan 2020

2 answers

472 views

Customize copy, prevent cut & paste

I am trying to figure out how to replace the copy command with my own version that can copy the row/column headers, as well as prevent cut and paste. In other controls I handled PreviewCanExecute and PreviewExecuted, but those don't seem to get triggered here. I tried to replace the editor.Commands.Copy command but it is readonly. Same with the command descriptors.

Spreadsheet

answered on 21 Jan 2020

4 answers

333 views

Error when using the SyntaxEditor with implicit styles

Hi,

I'm just beginning with the syntax editor, so am using a simple test project with nothing but a RadSyntaxEditor in a MainWindow.

I am using the separate NuGet packages (version 2020.1.115) with implicit styles (Fluent theme).

What I find is that even with nothing else, I get an error from my App.xaml file saying "Cannot find resource named 'DragVisualStyle'. Resource names are case sensitive." This doesn't seem to prevent the project from building and running, but still it is an error that shows in the error list and I seem to be unable to get rid of it.

After a small amount of investigation, it does seem that the resource dictionary for the SyntaxEditor (at least for the Fluent theme, but maybe others) is referencing the DragVisualStyle without defining it. Looking at some of the other controls it seems that they do each redefine that style if they need it, so the SyntaxEditor seems to differ in that respect.

I wanted to attach a simple example solution, but can't attach .zip files, so basically reproducing this amounts to creating a new WPF project, adding PackageReferences to the SyntaxEditor and Fluent theme NuGet packages, then merging the following in App.xaml:

And having the following in MainWindow.xaml:

<telerik:RadSyntaxEditor/>

Thanks

SyntaxEditor

answered on 21 Jan 2020

1 answer

133 views

Maintaining grid selection when using filter box

I have an issue with grid selection.

If I have, for example, 10 items and i select item 7 it is correctly selected.

I then click the filter box and enter a filter which doesn't include item 7 and press enter the correctly filtered items are shown. If i click the clear filter button I would like the originally selected item 7 to be still selected (and in view) but this seems hit and miss. Sometimes it is but sometimes it could be one of the filtered items.

Is this desired behaviour or am I missing something?

Thank you

R

GridView

answered on 21 Jan 2020

3 answers

149 views

2019 S3 XAML problem

We upgraded our NOXAML libraries to the latest S3 version (october 2019), from S2.

Since then, all telerik controls in the project give a similar error when the visual studio XAML designer is loaded...

'Control' not found in xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

'Control' an be any telerik Control type, like radcombobox or radgridview etc.

This occurs, where the control is defined inside the XAML like: <telerik:RadComboBox>...</telerik:RadComboBox>

as well as when we define a style like so...

As a solution we downgraded to the S3 version again because our project would produce over 300 of these errors, making the project difficult to manage.

As a note... The application does run like normal and the error disappear whilst Debugging.

General Discussions