使用powershell判断当前系统安装的.netframework版本

Intro

使用powershell判断当前系统安装的.netframework版本

Powershell 脚本

Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\' |  Get-ItemPropertyValue -Name Release | Foreach-Object { echo $_ }

      // Checking the version using >= enables forward compatibility.
      string CheckFor45PlusVersion(int releaseKey)
      {
         if (releaseKey >= 528040)
            return "4.8 or later";
         if (releaseKey >= 461808)
            return "4.7.2";
         if (releaseKey >= 461308)
            return "4.7.1";
         if (releaseKey >= 460798)
            return "4.7";
         if (releaseKey >= 394802)
            return "4.6.2";
         if (releaseKey >= 394254)
            return "4.6.1";      
         if (releaseKey >= 393295)
            return "4.6";      
         if (releaseKey >= 379893)
            return "4.5.2";      
         if (releaseKey >= 378675)
            return "4.5.1";      
         if (releaseKey >= 378389)
            return "4.5";      
         // This code should never execute. A non-null release key should mean
         // that 4.5 or later is installed.
         return "No 4.5 or later version detected";
      }

Reference

• https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed