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//------------------------------------------------------------------------------
// <copyright file="BinaryCompatibility.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Util {
using System;
using System.Runtime.Versioning;
// This class contains utility methods that mimic the mscorlib internal System.Runtime.Versioning.BinaryCompatibility type.
internal sealed class BinaryCompatibility {
// We need to use this AppDomain key instead of AppDomainSetup.TargetFrameworkName since we don't want applications
// which happened to set TargetFrameworkName and are calling into ASP.NET APIs to suddenly start getting new behaviors.
internal const string TargetFrameworkKey = "ASPNET_TARGETFRAMEWORK";
// quick accessor for the current AppDomain's instance
public static readonly BinaryCompatibility Current = new BinaryCompatibility(AppDomain.CurrentDomain.GetData(TargetFrameworkKey) as FrameworkName);
public BinaryCompatibility(FrameworkName frameworkName) {
// parse version from FrameworkName, otherwise use a default value
Version version = VersionUtil.FrameworkDefault;
if (frameworkName != null && frameworkName.Identifier == ".NETFramework") {
version = frameworkName.Version;
}
TargetFramework = version;
TargetsAtLeastFramework45 = (version >= VersionUtil.Framework45);
TargetsAtLeastFramework451 = (version >= VersionUtil.Framework451);
TargetsAtLeastFramework452 = (version >= VersionUtil.Framework452);
TargetsAtLeastFramework46 = (version >= VersionUtil.Framework46);
}
public bool TargetsAtLeastFramework45 { get; private set; }
public bool TargetsAtLeastFramework451 { get; private set; }
public bool TargetsAtLeastFramework452 { get; private set; }
public bool TargetsAtLeastFramework46 { get; private set; }
public Version TargetFramework { get; private set; }
}
}
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