Steps to reproduce:
1. Download Telerik_UI_for_WPF_Source_[Version].zip
2. Modify the Release70 configuration to Debug70 in the following script - Build_WPF70_Xamlless.bat
3. Execute the bat file to reproduce the error:
Telerik_UI_for_WPF_Source_[Version]\Core\Controls\Input\Touch\TouchManagerV3\TouchManager.TouchMode.cs(242,9): error CS1519: Invalid token '{' in class, record, struct, or interface member declaration [D:\temp\tic\Telerik_UI_for_WPF_Source_2023_3_1114\Core\Controls\Controls_NetCore_5cmyf5ge_wpftmp.csproj::TargetFramework=net7.0-windows]
As I workaround I would suggest editing the NetCoreConfigurations.targets with the following property groups:
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug70|AnyCPU' ">
<TargetFrameworks>net7.0-windows</TargetFrameworks>
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<OutputPath>bin\$(Configuration)\</OutputPath>
<DefineConstants>DEBUG;WPF;NETCORE;CODE_ANALYSIS;WPF45;WPF40</DefineConstants>
<TreatWarningsAsErrors>false</TreatWarningsAsErrors>
<WarningsAsErrors />
<SourceAnalysisTreatErrorsAsWarnings>true</SourceAnalysisTreatErrorsAsWarnings>
<StyleCopEnabled>false</StyleCopEnabled>
<TargetFrameworkVersionString>70</TargetFrameworkVersionString>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug70.NoXaml|AnyCPU' ">
<TargetFrameworks>net7.0-windows</TargetFrameworks>
<PlatformTarget>AnyCPU</PlatformTarget>
<DebugSymbols>true</DebugSymbols>
<DebugType>full</DebugType>
<OutputPath>bin\$(Configuration)\</OutputPath>
<DefineConstants>DEBUG;WPF;NETCORE;CODE_ANALYSIS;WPF45;WPF40;NOXAML</DefineConstants>
<TreatWarningsAsErrors>false</TreatWarningsAsErrors>
<WarningsAsErrors />
<SourceAnalysisTreatErrorsAsWarnings>true</SourceAnalysisTreatErrorsAsWarnings>
<StyleCopEnabled>false</StyleCopEnabled>
<NoXaml>true</NoXaml>
<GenerateImplicitStyles>true</GenerateImplicitStyles>
<TargetFrameworkVersionString>70</TargetFrameworkVersionString>
</PropertyGroup> The file can be found here: Telerik_UI_for_WPF_Source_[Version]\Build\Imports\NetCoreConfigurations.targets.