Question

使用C＃执行vbscript时遇到了很大的问题。我有这个通用的流程执行功能：

/// <summary>
/// Runs a process silent (Without DOS window) with the given arguments and returns the process' exit code.
/// </summary>
/// <param name="output">Recieves the output of either std/err or std/out</param>
/// <param name="exe">The executable to run, may be unqualified or contain environment variables</param>
/// <param name="args">The list of unescaped arguments to provide to the executable</param>
/// <returns>Returns process' exit code after the program exits</returns>
/// <exception cref="System.IO.FileNotFoundException">Raised when the exe was not found</exception>
/// <exception cref="System.ArgumentNullException">Raised when one of the arguments is null</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Raised if an argument contains '\0', '\r', or '\n'</exception>
public static int Run(Action<string> output, string exe, params string[] args)
{
    if (String.IsNullOrEmpty(exe))
        throw new FileNotFoundException();
    if (output == null)
        throw new ArgumentNullException("output");

    ProcessStartInfo psi = new ProcessStartInfo();
    psi.UseShellExecute = false;
    psi.RedirectStandardError = true;
    psi.RedirectStandardOutput = true;
    psi.RedirectStandardInput = true;
    psi.WindowStyle = ProcessWindowStyle.Hidden;
    psi.CreateNoWindow = true;
    psi.ErrorDialog = false;
    psi.WorkingDirectory = Environment.CurrentDirectory;
    psi.FileName = FindExePath(exe);
    psi.Arguments = args[0];

    using (Process process = Process.Start(psi))
    using (ManualResetEvent mreOut = new ManualResetEvent(false),
    mreErr = new ManualResetEvent(false))
    {
        process.OutputDataReceived += (o, e) => { if (e.Data == null) mreOut.Set(); else output(e.Data); };
        process.BeginOutputReadLine();
        process.ErrorDataReceived += (o, e) => { if (e.Data == null) mreErr.Set(); else output(e.Data); };
        process.BeginErrorReadLine();

        process.WaitForExit();

        mreOut.WaitOne();
        mreErr.WaitOne();
        return process.ExitCode;
    }
}

像魅力一样工作。现在我想用这个函数执行一个vbscript。我称之为：

int exit_code = ProcessUtility.Run(output_action, "cscript.exe", "//Nologo" + save_parameter_string);

这也运行良好，但问题是，它运行得很好。如果我执行包含错误的vbscript，则退出代码也是＆＃34; 0＆＃34; （输出包含正确的＆＃34;异常＆＃34;从vbscript，在我的情况下：＆＃34; ... \ test.vbs（145,12）Microsoft VBScript中的运行时错误：对象必需＆＃34; 但退出代码为0。

有没有人有想法，为什么？

Answer 1

或者，您可以使用VBScript -- Using error handling中描述的On Error Resume Next技术。

简单地说，将原始脚本包装在这种类型的“异常处理程序”中：

On Error Resume Next

YourOriginalUnsafeCode()

' This would make cscript return non-zero in case of error'
if err.number <> 0 then WScript.quit err.number

Sub YourOriginalUnsafeCode()
    ' Your original code goes into this function'
    a = 1 / 0
    a = 2
End Sub

Answer 2

我把它放在BAT文件中以生成运行时错误：

echo x = 1/0 > foo.vbs
cscript foo.vbs
echo %ERRORLEVEL%

输出：

C:\null\foo.vbs(1, 1) Microsoft VBScript runtime error: Division by zero

0

退出代码为0，因此您无法使用退出代码检测运行时错误。

（%ERRORLEVEL%仅1语法错误（echo x = ?1/0 > foo.vbs））

您需要解析输出或确定StdErr的行为，或者您可以通过ScriptControl从.Net运行VBScript，这会生成标准异常：How to execute VBScript command within textbox from C# application?

使用C＃执行vbscript会返回错误的退出代码

2 个答案: