C#清除SqlServer挂起代码

private void but_Del_Click(object sender, EventArgs e)

        {

            //指定路径

            RegistryKey key = Registry.LocalMachine;

            RegistryKey SoftKey = key.OpenSubKey("SYSTEM\\CurrentControlSet\\Control\\Session Manager", true);

            string[] subkeyNames = SoftKey.GetValueNames();

            //取得该项下所有键值的名称的序列，并传递给预定的数组中

            foreach (string keyName in subkeyNames)

            {

                if (keyName == "PendingFileRenameOperations") //判断键值的名称

                {

                    SoftKey.DeleteValue("PendingFileRenameOperations",true);

                    MessageBox.Show("清除SQL挂起成功！");

                }

            }

            SoftKey.Close();

            key.Close();

        }