MyFunctions.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
  </PropertyGroup>

  <!-- 
    Azure Functions executing in In-process mode is currently incompatible with
    System.Diagnostics.DiagnosticSource 7.0.0.

    Adding FunctionsPreservedDependencies is required to ensure that the
    Azure Functions runtime uses the version of System.Diagnostics.DiagnosticSource
    this function depends on.
  -->
  <ItemGroup>
    <FunctionsPreservedDependencies Include="System.Diagnostics.DiagnosticSource.dll" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.0.1" />
    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="7.0.0" />
  </ItemGroup>

  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>