Azure Function 无法连接到 azure ZAC5C74B64B4B8352AF2F181AFFB5AC 数据库。 Package 错误

Question

I'm trying to connect my azure function to my azure sql database . When trying connection.open() it gives the following error.

Executed 'ClientID2' (Failed, Id=22ad8465-45f5-4fff-ba90-f0ff7d0ee465, Duration=5895ms) [2021-11-25T10:49:57.575Z] System.Private.CoreLib: Exception while executing function: ClientID2. Microsoft.Data.SqlClient: The type initializer for 'Microsoft.Data.SqlClient.TdsParser' threw an exception. Microsoft.Data.SqlClient: Could not load file or assembly 'System.Text.Encoding.CodePages, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

The connection itself runs on .net 5.0 framework, but not in .net core 3.1.

[FunctionName("ClientID2")]
    public static async Task<IActionResult> Run(
        [HttpTrigger(AuthorizationLevel.Function, "get", Route = null)] HttpRequest req, ILogger log)
    {
        string requestBody = string.Empty;
        try
        {
            log.LogInformation("Function process");

            using (SqlConnection connection = new SqlConnection(Environment.GetEnvironmentVariable("Connection_Database")))
            {
                connection.Open();

Packages installed

Can anyone point me in the right direction?

Best regards

EDIT:

    <Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
    <RootNamespace>Client_ID</RootNamespace>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs" Version="3.0.30" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Http" Version="3.0.12" />
    <PackageReference Include="Microsoft.Data.SqlClient" Version="4.0.0" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.0.1" />
    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
    <PackageReference Include="System.Configuration.ConfigurationManager" Version="6.0.0" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

Local.Settings.Json

{
    "IsEncrypted": false,
    "Values": {
        "AzureWebJobsStorage": "UseDevelopmentStorage=true",
        "FUNCTIONS_WORKER_RUNTIME": "dotnet",
        "Connection_Database": Connection string from azure sql database
    }
}

Answer 1

I figured it out, but not sure if it is the correct way.

Had to put the System.Text.Encoding.CodePages.dll and System.Runtime.CompilerServices.Unsafe.dll directly in bin folder of project.

Next, according to this answer

I added to the.csproj the following

<ItemGroup>
        <FunctionsPreservedDependencies Include="System.Text.Encoding.CodePages.dll" />
        <FunctionsPreservedDependencies Include="System.Runtime.CompilerServices.Unsafe.dll" />
    </ItemGroup>

And then it worked