InvalidOperationException

• Feb 04, 2022

If you use Blazor WebAssembly Data Grid (DxDataGrid<T>), you may see the following exception in a browser:

System.InvalidOperationException: No generic method ‘Take’ on type ‘System.Linq.Queryable’ is compatible with the supplied type arguments and arguments.

To resolve this issue, do one of the following:

• Set the BlazorWebAssemblyEnableLinking property to false in the project file to disable the link with an MSBuild property.

  <PropertyGroup>
  ...
    <BlazorWebAssemblyEnableLinking>false</BlazorWebAssemblyEnableLinking>
  </PropertyGroup>
  

• Add the LinkerConfig.xml file and include the following code:

  <?xml version="1.0" encoding="UTF-8" ?>
  ...
  <linker>
    <assembly fullname="mscorlib">
    ...
      <type fullname="System.Threading.WasmRuntime" />
    </assembly>
    <assembly fullname="System.Core">
    ...
      <type fullname="System.Linq.Expressions*" />
      <type fullname="System.Linq.Queryable*" />
      <type fullname="System.Linq.Enumerable*" />
      <type fullname="System.Linq.EnumerableRewriter*" />
    </assembly>
    ...
    <assembly fullname="[PUT YOUR ASSEMBLY NAME HERE]" />
  </linker>
  

  Then specify this file as an MSBuild item in the project file.

  <ItemGroup>
    ...
    <BlazorLinkerDescriptor Include="LinkerConfig.xml" />
  </ItemGroup>
  

See the following topic for more information: Configure the Linker for ASP.NET Core Blazor.