ProcessStartInfo.Atributes Doesn't Work Properly

Hello,



I'm writing a program which runs SQL express installer






Code Snippet

public bool InstalSQLExpress()

{

//creating new process for setup

Process setupProcess = new Process();

//start information for setup process

ProcessStartInfo startInfo = new ProcessStartInfo();

//filename location

startInfo.FileName = sqlExpressSetupFileLocation;



//commandline arguments ("/qb" - only basic UI during the setup, "/qn" - setup with no UI)

//startInfo.Arguments = BuildCommandLine(); // <- make it work



// startInfo.Arguments = "/qb INSTANCENAME=SQLEXPRESS ADDLOCAL=All SECURITYMODE=SQL" +

// "SQLACCOUNT=konrad SQLPASSWORD=****** " +

// "AGTACCOUNT=konrad AGTPASSWORD=******" +

// "ASACCOUNT=konrad ASPASSWORD=******" +

// "SAPWD=*****";

startInfo.Arguments = BuildCommandLine();



//we're not using system shell to process execution

startInfo.UseShellExecute = false;

//adding start info

setupProcess.StartInfo = startInfo;



setupProcess.EnableRaisingEvents = true;

setupProcess.OutputDataReceived += new DataReceivedEventHandler(setupProcess_OutputDataReceived);

setupProcess.ErrorDataReceived += new DataReceivedEventHandler(setupProcess_ErrorDataReceived);

setupProcess.Exited += new EventHandler(setupProcess_Exited);



//running the process

return (setupProcess.Start());

}

private string BuildCommandLine()

{

string strCommandLine = null;

MessageBox.Show("SQL");

if (this.sqlSecurityMode)

{

strCommandLine = "/qb";

strCommandLine += " INSTANCENAME=SQLEXPRESS";

strCommandLine += " ADDLOCAL=All";

strCommandLine += " SECURITYMODE=SQL";

strCommandLine += " SQLACCOUNT=" + sqlAccount;

strCommandLine += " SQLPASSWORD=" + sqlPassword;

strCommandLine += " AGTACCOUNT=" + sqlAccount;

strCommandLine += " AGTPASSWORD=" + sqlPassword;

strCommandLine += " ASACCOUNT=" + sqlAccount;

strCommandLine += " ASPASSWORD=" + sqlPassword;

strCommandLine += " SAPWD=" + SysadminPassword;

return strCommandLine;

}

else

{

return strCommandLine;

}

}



When I specify command with literal value it works fine but when I try to use function or variable installer prompt error message:



SQL Server Setup could not validate the service accounts. Either the service accounts have not been provided for all of the services being installed, or the specified username or password is incorrect. For each service, specify a valid username, password, and domain, or specify a built-in system account.



I don't know why it's wrong and be gracefull for help