用c#獲得電腦上安裝的軟體

string app ="";

                   using (RegistryKey key =Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\Windows\CurrentVersion\Uninstall",false))

                   {

                       if (key != null)

                       {

                           foreach (string keyName in key.GetSubKeyNames())

                           {

                               using (RegistryKey key2 = key.OpenSubKey(keyName, false))

                               {

                                   if (key2 != null)

                                   {

                                       string softwareName = key2.GetValue("DisplayName","").ToString();

                                       string installLocation = key2.GetValue("InstallLocation","").ToString();

                                       if (softwareName != "")

                                       {

                                           app  =
app  + "軟體名：" + softwareName +"\r\n";

                                       }

                                   }

                               }

                           }

                       }

                   }

通過註冊表,獲得所有的軟體集合.用這個也可以判斷, 某個軟體是否安裝在你的電腦上.