ComboBox not taking Office2016Touch theme - what am I doing wrong?

[David]

I'm trying to theme my app using implicit styles and the Office2016Touch theme.

Most controls look correct, but for some reason, the RadComboBox is only "half" themed - the dropdown looks correct, the mouseover effect looks correct, but the basic look still appears to be default/glass-like.

I've no idea what I'm doing wrong, even the most basic sample app seems to exhibit the problem.

Any help gratefully received!

[Martin]

Hello David,

I have observed this scenario before and I could guess that you might be using assemblies with mixed types - XAML-included and noXAML assemblies. In order to get the theming right, you need to make sure that all your assemblies are noXAML (including the Telerik.Windows.Controls.dll, Telerik.Windows.Controls.Input.dll  etc.) since the Office2016Touch theme is supported with noXAML assemblies and implicit styles.

Regards,
Martin
Telerik by Progress

[Christian]

I have the same issue. I followed the instructions, but it doesnt affect radcombobox. Everything is fine when the box is editable. When I set it to IsEditable="False", it changes the style back to default. I'm using Fluent Theme with implicite Styles.

Any guesses?

[Stenly]

I have created a sample project that uses the NoXaml version of the assemblies and the set theme is Fluent. However, the RadCombobox control does not revert to its default theme when its IsEditable property is set to False.

My guess is that, as mentioned by my colleague Martin, there could be mixed types of assemblies - Xaml and NoXaml. This might be the reason behind the control's theme changing, as it is not supported to use both of these versions at once (it could lead to visual or design-time issues). You could refer to our Xaml vs NoXaml article from our documentation, for more detailed information on this matter.

With that said, I have attached the sample project, so, could you give it a try? If you need any further assistance, would you mind modifying this project, so that this behavior is also present in it?

[Christian]

Same issue in your sample project.

Editable Combobox is in Fluent Style, non editable is default

[Dilyan Traykov]

I tested the project Stenly provided and observe the following result after adding a second non-editable RadComboBox:



I can only assume that the references are not resolved correctly on your machine if their HintPath is not found. What I can suggest is to manually replace the references before running the project and deleting the bin and obj folders. You can also replace the references automatically by using the ReferencesResolver extension.

To ensure no caching is taking place, you may also restart Visual Studio.

Please test this updated project and let me know if you still experience the same issue.

[Christian]

It just wont work :D I tested it on different machines. Same result. I'm sorry

[Dilyan Traykov]

That is unfortunate. I also tested this on a separate machine but the control is still displayed as expected after changing the references.

Can you please try to manually modify the .csproj file to ensure the correct assemblies are referenced? You can do so by manually replacing the HintPaths with the full path to your Binaries.NoXaml folder:

    <Reference Include="Telerik.Windows.Controls">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>C:\Program Files (x86)\Progress\Telerik UI for WPF R1 2022\Binaries.NoXaml\WPF45\Telerik.Windows.Controls.dll</HintPath>
    </Reference>
    <Reference Include="Telerik.Windows.Controls.Input">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>.C:\Program Files (x86)\Progress\Telerik UI for WPF R1 2022\Binaries.NoXaml\WPF45\Telerik.Windows.Controls.Input.dll</HintPath>
    </Reference>
    <Reference Include="Telerik.Windows.Themes.Fluent">
      <HintPath>C:\Program Files (x86)\Progress\Telerik UI for WPF R1 2022\Binaries.NoXaml\WPF45\Telerik.Windows.Themes.Fluent.dll</HintPath>
    </Reference>

Please note that I've also removed the versions and other information from the Include attribute. Do let me know how this goes.

[David]

Thank you. That was exactly what had happened.