.net 运行exe后如何返回退出代码？
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How to return exit code after running an exe?
提问by Code-EZ
I have created a Console application for validating a function and this application i need to execute by using vbscript. After executing this exe i want to return an exit code whether the function return success or not. How can i return a status or exit code in .net?
我创建了一个用于验证函数的控制台应用程序，我需要使用 vbscript 执行这个应用程序。执行此 exe 后，无论函数是否返回成功，我都想返回退出代码。如何在 .net 中返回状态或退出代码？
回答by gideon
I'm going to assume you're writing either C# or VB.NET. In either case usually people have a Main function that returns nothing, butyou can change this to return an integer to represent the exit code.
我将假设您正在编写 C# 或 VB.NET。在任何一种情况下，人们通常都有一个不返回任何内容的 Main 函数，但您可以将其更改为返回一个整数来表示退出代码。
For C# see this MSDN page.
对于 C#，请参阅此 MSDN 页面。
You can do:
你可以做：
static int Main()
{
//...
return 0;
}
For VB.NET see this MSDN page.
对于 VB.NET，请参阅此 MSDN 页面。
You can do:
你可以做：
Module mainModule
Function Main() As Integer
'....
'....
Return returnValue
End Function
End Module
回答by Paul Farry
In addition to @gideon you can also set
除了@gideon，您还可以设置
Environment.ExitCode = theExitCode;
In other parts of your code and exit directly if something really bad has happened
在代码的其他部分，如果发生了非常糟糕的事情，则直接退出
回答by Ekkehard.Horner
Given this C# program:
鉴于此 C# 程序：
class MainReturnValTest {
static int Main(string[] args) {
int rv = 0;
if (1 == args.Length) {
try {
rv = int.Parse(args[0]);
}
catch(System.FormatException e) {
System.Console.WriteLine("bingo: '{1}' - {0}", e.Message, args[0]);
rv = 1234;
}
}
System.Console.WriteLine("check returns {0}.", rv);
return rv;
}
}
Sample runs:
示例运行：
check.exe
check returns 0.
check.exe 15
check returns 15.
check.exe nonum
bingo: 'nonum' Input string was not in a correct format.
check returns 1234.
and this VBScript script (reduced to the bare minimum, don't do this in production):
和这个 VBScript 脚本（减少到最低限度，不要在生产中这样做）：
Option Explicit
Const WshFinished = 1
Dim goWSH : Set goWSH = CreateObject("WScript.Shell")
Dim sCmd : sCmd = "..\cs\check.exe"
If 1 = WScript.Arguments.Count Then sCmd = sCmd & " " & WScript.Arguments(0)
WScript.Echo sCmd
Dim nRet : nRet = goWSH.Run(sCmd, 0, True)
WScript.Echo WScript.ScriptName, "would return", nRet
With goWSH.Exec(sCmd)
Do Until .Status = WshFinished : Loop
WScript.Echo "stdout of check.exe ==>" & vbCrLf, .Stdout.ReadAll()
nRet = .ExitCode
WScript.Echo ".ExitCode of check.exe", nRet
End With
' !! http://stackoverflow.com/questions/2042558/how-do-i-get-the-errorlevel-variable-set-by-a-command-line-scanner-in-my-c-sha
WScript.Echo "Errorlevel:", Join(Array(goWSH.Environment("PROCESS")("ERRORLEVEL"), goWSH.ExpandEnvironmentStrings("%ERRORLEVEL%"), "???"), " - ")
WScript.Echo WScript.ScriptName, "returns", nRet
WScript.Quit nRet
Sample runs:
示例运行：
cscript 13921064.vbs
..\cs\check.exe
13921064.vbs would return 0
stdout of check.exe ==>
check returns 0.
.ExitCode of check.exe 0
Errorlevel: - %ERRORLEVEL% - ??? <=== surprise, surprise
13921064.vbs returns 0
echo %ERRORLEVEL%
0
cscript 13921064.vbs nonum & echo %ERRORLEVEL%
..\cs\check.exe nonum
13921064.vbs would return 1234
stdout of check.exe ==>
bingo: 'nonum' Input string was not in a correct format.
check returns 1234.
.ExitCode of check.exe 1234
Errorlevel: - %ERRORLEVEL% - ???
13921064.vbs returns 1234
0 <=== surprise, surprise
DNV35 E:\trials\SoTrials\answers927081\vbs
echo %ERRORLEVEL%
1234
You'll see
你会看到的
- WScript.Quit is the way to return an exit code from your script
- You start another process by using .Run or .Exec
- .Run returns the exit code of the called process
- .Exec sets .ExitCode (after termination!)
- Accessing %ERRORLEVEL% in your script is futile (@LexLi)
cscript 13921064.vbs nonum & echo %ERRORLEVEL%is useless too
- WScript.Quit 是从脚本中返回退出代码的方法
- 使用 .Run 或 .Exec 启动另一个进程
- .Run 返回被调用进程的退出代码
- .Exec 设置 .ExitCode（终止后！）
- 在脚本中访问 %ERRORLEVEL% 是徒劳的（@LexLi）
cscript 13921064.vbs nonum & echo %ERRORLEVEL%也没用
回答by Lex Li
As @gideon commented, in your executable you must use returnstatement to return the number.
正如@gideon 评论的那样，在您的可执行文件中，您必须使用return语句来返回数字。
In your script, please read %ERRORLEVEL%after calling this executable. That's the place Windows holds the return code.
在您的脚本中，请%ERRORLEVEL%在调用此可执行文件后阅读。这就是 Windows 保存返回码的地方。
