如何判断某版本的.NET Framework是否安装 1..NET Framework .NET Framework2.0 键：[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v2.0.50727] 值：Install = 1 .NET Framework3.0 键：[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.0] 值：Install = 1 .NET Framework3.5 键：[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5] 值：Install = 1 http://www.microsoft.com/ko-kr/download/details.aspx?id=22 2.Service Pack（以2.0 SP1为例） 键：[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v2.0.50727] 值：SP = 1 3.语言包（以简体中文为例） 键：[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v2.0.50727\2052] 值：Install = 1