create nuget credential provider in csharp

main.cs
using NuGet.Credentials;
using System;
using System.Threading.Tasks;

public class MyCredentialProvider : ICredentialProvider
{
    public Task<CredentialResponse> GetCredentialsAsync(Uri uri, IWebProxy proxy, bool isProxyAuth, string message)
    {
        // Implement the logic to retrieve user credentials based on the given parameters.
        // You can use the 'uri' parameter to determine the server for which the credentials are requested.
        // You can use the 'proxy' parameter to get the proxy settings if needed.
        
        // Return a CredentialResponse object with the obtained credentials or an error message if the credentials are not found.
        return Task.FromResult(new CredentialResponse(CredentialStatus.ProviderNotApplicable));
    }
}
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<configuration>
  <packageSources>
    <!-- ... -->
  </packageSources>
  <packageSourceCredentials>
    <{SERVER_NAME}>
      <add key="Username" value="{USERNAME}" />
      <add key="Password" value="{PASSWORD}" />
    </{SERVER_NAME}>
  </packageSourceCredentials>
  <credProvider>
    <{SERVER_NAME}>
      <add key="provider" value="MyCredentialProvider" />
    </{SERVER_NAME}>
  </credProvider>
</configuration>
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