@@ -24,12 +24,13 @@ public class Program
 
     public static void Main()
     {
-        using var tracerProvider = Sdk.CreateTracerProvider(
+        using var tracerProvider = Sdk.CreateTracerProviderBuilder()
+            .AddActivitySources(
             new string[]
             {
                 "MyCompany.MyProduct.MyLibrary",
             })
-            .AddMyExporter();
+            .Build().AddMyExporter();
 
         using (var activity = MyActivitySource.StartActivity("SayHello"))
         {
﻿// <copyright file="Program.cs" company="OpenTelemetry Authors">
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// </copyright>

using System.Diagnostics;
using OpenTelemetry;

public class Program
{
    private static readonly ActivitySource MyActivitySource = new ActivitySource(
        "MyCompany.MyProduct.MyLibrary");

    public static void Main()
    {
        using var tracerProvider = Sdk.CreateTracerProvider(
            new string[]
            {
                "MyCompany.MyProduct.MyLibrary",
            })
            .AddMyExporter();

        using (var activity = MyActivitySource.StartActivity("SayHello"))
        {
            activity?.SetTag("foo", 1);
            activity?.SetTag("bar", "Hello, World!");
            activity?.SetTag("baz", new int[] { 1, 2, 3 });
        }
    }
}

I know you can add exporter after build, but hey  