Is there a attribute or set of attributes in Azure SDK for .NET to determine if pipeline is classic or using YAML

Is there a attribute or set of attributes in Azure SDK for .NET to determine if a pipeline in Azure DevOps is using classic architecture or using YAML?

You can use the .NET client libraries for Azure DevOps.

you need to install the following NuGet packages with the latest stable versions in your project:

• Microsoft.TeamFoundationServer.Client
• Microsoft.VisualStudio.Services.Client
• Microsoft.VisualStudio.Services.InteractiveClient

And below is a sample of the C# code as reference.

using Microsoft.Azure.Pipelines.WebApi;
using Microsoft.VisualStudio.Services.Common;
using Microsoft.VisualStudio.Services.WebApi;

. . .

public static void getPipeline(string orgName, string projName, int pipID, string pat)
{
    try {
        var orgUrl = new Uri($"https://dev.azure.com/{orgName}");
        VssConnection connection = new VssConnection(orgUrl, new VssBasicCredential(string.Empty, pat));
        PipelinesHttpClient pipClient = connection.GetClient<PipelinesHttpClient>();

        var get_pipe = pipClient.GetPipelineAsync(projName, pipID).Result;
        var type = get_pipe.Configuration.Type.ToString();
        Console.Write($"The type of pipeline {pipID} is {type}.");
    }
    catch(Exception ex) { 
        Console.Write(ex.ToString());
    }
}

When the pipeline is a YAML pipeline, the returned value of type is 'yaml' (or 'Yaml'). Otherwise, it is not a YAML pipeline.

If classic build pipeline, the type value should be 'designerJson'.

The corresponding REST API is "Pipelines - Get".