MissingMethodException

• Dec 07, 2021

You may see the following exception in a browser when you use Blazor WebAssembly Scheduler:

System.MissingMethodException: Constructor on type ‘System.ComponentModel.Int32Converter’ not found.

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="System">
        <!-- Use this line to include the entire assembly. -->
        <type fullname="System.ComponentModel*" />
        <!-- Uncomment the following lines to include individual types. -->
        <!-- <type fullname="System.ComponentModel.Int32Converter*" />
        <type fullname="System.ComponentModel.BooleanConverter*" />
        <type fullname="System.ComponentModel.DateTimeConverter*" />
        <type fullname="System.ComponentModel.StringConverter*" /> -->
        ...
    </assembly>
  </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.