sources/Google.Solutions.Common/Diagnostics/ClrVersion.cs

//
// Copyright 2020 Google LLC
//
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.
//

using System;
using System.Diagnostics;

namespace Google.Solutions.Common.Diagnostics
{
    public static class ClrVersion
    {
        /// <summary>
        /// Obtain the real CLR version (Environment.Version reports bogus values). 
        /// </summary>
        public static Version Version
        {
            get
            {
                //
                // Get the file version of mscorlib.dll.
                //
                var assemblyUri = typeof(string).Assembly.CodeBase;
                var versionInfo = FileVersionInfo.GetVersionInfo(new Uri(assemblyUri).LocalPath);

                return new Version(
                    versionInfo.FileMajorPart,
                    versionInfo.FileMinorPart,
                    versionInfo.FileBuildPart,
                    versionInfo.FilePrivatePart);
            }
        }
    }
}