How to get the return value of console app in a batch file?

Question

I have a C# console application AAA.exe which can return an integer to indicate the result

static int Main(string[] args)
  {
    . . .
    if(case1)
       return -1;

    if(case2)
       Environment.Exit(1);

    return 0;
}

I will call AAA.exe in a batch file and need the return value

AAA.exe /p="param1"

My question is:

how to get the return value of AAA.exe?
is there any difference between return 0; and Environment.Exit(0); statements?

Foole · Accepted Answer · 2018-10-30T06:24:48.663

8

You can use "errorlevel" in your batch file to get the returned value. More info here.

edited Oct 30 '18 at 06:24

answered Feb 08 '10 at 05:31

Foole

score 4 · Answer 2 · edited May 23 '17 at 11:44

4

Is there any difference between return 0; and Environment.Exit(0); statements?

edited May 23 '17 at 11:44

Community

answered Feb 08 '10 at 05:40

dugas

score 0 · Answer 3 · answered Nov 13 '22 at 08:04

The environmental variable %ERRORLEVEL% contains the return code of the last executed program or script.

By default, the way to check for the ERRORLEVEL is via the following code.

Syntax
IF %ERRORLEVEL% NEQ 0 ( 
   DO_Something 
)

3 Answers3