IIS中找不到.NET Framework 4.5的原因
[url=http://www.west-wind.com/weblog/posts/2012/Mar/13/NET-45-is-an-inplace-replacement-for-NET-40].NET 4.5 is an in-place replacement for .NET 4.0[/url]，[p=20, 2, left][font=verdana, sans-serif]When .NET 4.5 is installed it effectively [/font][font=verdana, sans-serif]replaces [/font][font=verdana, sans-serif].NET 4.0 on the machine. .NET 4.0 gets overwritten by a new version of .NET 4.5 which - [/font][url=http://blogs.msdn.com/b/dotnet/archive/2011/09/26/compatibility-of-net-framework-4-5.aspx]according to Microsoft[/url][font=verdana, sans-serif] - is supposed to be 100% backwards compatible.[/font] [/p][p=20, 2, left]我们简单的理解就是，4.5本质上还是4.0，属于递增式的更新，所以对IIS 来说看到的只有4.0而已，看看如下的4.5 DLL库中的版本号就知道了[/p][p=20, 2, left][img]http://images.cnblogs.com/cnblogs_com/jivenbest/3.png[/img][/p]页:
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