Question

public static void Command(string vCommand, string machineName, string username, string password)
            {
                ManagementScope Scope = null;
                ConnectionOptions ConnOptions = null;
                ObjectQuery ObjQuery = null;
                ManagementObjectSearcher ObjSearcher = null;
                try
                {
                    ConnOptions = new ConnectionOptions();
                    ConnOptions.Impersonation = ImpersonationLevel.Impersonate;
                    ConnOptions.EnablePrivileges = true;
                    //local machine
                    if (machineName.ToUpper() == Environment.MachineName.ToUpper())
                        Scope = new ManagementScope(@"\ROOT\CIMV2", ConnOptions);
                    else
                    {
                        //remote machine
                        ConnOptions.Username = username;
                        ConnOptions.Password = password;
                        Scope = new ManagementScope(@"\\" + machineName + @"\ROOT\CIMV2", ConnOptions);
                    }
                    Scope.Connect();

                    ObjQuery = new ObjectQuery("SELECT * FROM Win32_Directory WHERE Name = 'c:\\0stuff'");
                    ObjSearcher = new ManagementObjectSearcher(Scope, ObjQuery);

                    foreach (ManagementObject obj in ObjSearcher.Get()) //ERROR HAPPEN HERE
                    {
                       //code here
                    }

                    if (ObjSearcher != null)
                    {
                        ObjSearcher.Dispose();
                    }
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }

如果我只使用“ObjQuery = new ObjectQuery（”SELECT * FROM Win32_Directory“）;”我完全没问题。

但是一旦我尝试使用“WHERE Name = X”，我就会收到“无效查询”错误。

我不知道出了什么问题。（在有人问之前，是的，c：\ 0stuff存在）。

Answer 1

您需要使用逐字字符串文字@"..."来防止反斜杠在C＃中被视为转义序列：

@"SELECT * FROM Win32_Directory WHERE Name = 'c:\\0stuff'"

如果没有@，实际发送的查询将如下所示：

SELECT * FROM Win32_Directory WHERE Name = 'c:\0stuff'

请注意，不再正确转义反斜杠。

添加WHERE Name =时出现无效的查询错误

1 个答案: