You can call your executable like this and check the return value (Message).
#Define SW_HIDE 0
#Define SW_SHOWNORMAL 1
#Define SW_NORMAL 1
#Define SW_SHOWMINIMIZED 2
#Define SW_SHOWMAXIMIZED 3
#Define SW_MAXIMIZE 3
#Define SW_SHOWNOACTIVATE 4
#Define SW_SHOW 5
#Define SW_MINIMIZE 6
#Define SW_SHOWMINNOACTIVE 7
#Define SW_SHOWNA 8
#Define SW_RESTORE 9
#Define SW_SHOWDEFAULT 10
#Define SW_FORCEMINIMIZE 11
#Define SW_MAX 11
Local lcFileName, lcResult
lcFileName = Fullpath("c:\MyFolder\MyCSharpExecutable.exe")
lcResult = ShellExec(m.lcFileName,"Apples","",SW_SHOWNORMAL)
If !Empty(m.lcResult) && error
Messagebox(m.lcResult)
Endif
Function ShellExec
Lparameters tcExecutable,tcParams,tcWorkingDir,tnShowType,tcOperation
Declare Long ShellExecute In "shell32.dll" ;
long HWnd, String lpszOp, ;
string lpszFile, String lpszParams, ;
string lpszDir, Long nShowCmd
tcOperation = Iif(Empty(m.tcOperation), 'Open', m.tcOperation)
tcExecutable = Iif(Empty(m.tcExecutable), '', m.tcExecutable)
tcParams = Iif(Empty(m.tcParams), '', m.tcParams)
tcWorkingDir = Iif(Empty(m.tcWorkingDir), '', m.tcWorkingDir)
tnShowType = Iif(Type('m.tnShowType') # 'N', SW_SHOWNORMAL, m.tnShowType)
Local lnResult, lcError
lcError = ''
lnResult = ShellExecute(0,m.tcOperation,m.tcExecutable,m.tcParams,m.tcWorkingDir,m.tnShowType)
If !( m.lnResult > 32 ) && Error
lcError = GetShExecErrorMsg(m.lnResult)
Endif
Return m.lcError
Endfunc
Function GetShExecErrorMsg
Lparameters tnErrNum
Local Array aErrors[1]
Local lcMessage, lcErrors,lnErrors,ix
TEXT to m.lcErrors noshow
0,The operating system is out of memory or resources. \n
2,The specified file was not found. \n
3,The specified path was not found. \n
11,The .exe file is invalid (non-Win32® .exe or error in .exe image). \n
5,The operating system denied access to the specified file. \n
27,The file name association is incomplete or invalid. \n
30,The DDE transaction could not be completed because
other DDE transactions were being processed. \n
29,The DDE transaction failed. \n
28,The DDE transaction could not be completed because the request timed out. \n
32,The specified dynamic-link library was not found. \n
31,There is no application associated with the given file name extension.
This error will also be returned if you attempt to print a file that is not printable. \n
8,There was not enough memory to complete the operation. \n
26,A sharing violation occurred. \n
ENDTEXT
Clear
lnErrors = Alines(aErrors,m.lcErrors,.T.,'\n')
For ix=1 To m.lnErrors
If ( Val(Chrtran(Left(aErrors[m.ix],;
At(',',aErrors[m.ix])-1),Chr(13)+Chr(10),'')) = m.tnErrNum )
lcMessage = Substr(aErrors[m.ix],At(',',aErrors[m.ix])+1)
Exit
Endif
Endfor
If Empty(m.lcMessage)
lcMessage = 'An unspecified error occurred.'
Endif
Return m.lcMessage
Endfunc