完整路徑 HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQLServer\SuperSocketNetLib\Tcp
RegistryKey software1 = Key.OpenSubKey(@"SOFTWARE\Microsoft", true);
RegistryKey software2 = software1.OpenSubKey("Microsoft SQL Server", true);
RegistryKey software3 = software2.OpenSubKey("MSSQL11.MSSQLSERVER", true);
前面2個都能獲取到數值,第3個獲取為什么是null值
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