Help With INTERFACING C++.EXE WITH .NET

[shreyas123]

I have written a code in c++ which takes a filename as one of its arguments. This filename I want to pass using .net
How can I do this Please help me
Thank you

 

[JohnH]

Process.Start("cpp.exe", "filename")

 

[shreyas123]

do I have to run this cpp.exe parallely with the vb.net

 

[JohnH]

No, it that code line that starts that process and pass the filename argument.

 

[shreyas123]

I am not able to run this .exe I have stored in the debug folder and as soon a it starts executing it says "parameters are incorrect"

 

[JohnH]

If you able to run the exe from commandline or Run dialog with correct parameters you can do the same thing with Process.Start.

 

[shreyas123]

It is getting run from the command line but it is not running from the .net I dont know why even when I am double clicking my cpp.exe within that debug folder it is saying "Parameters Are Incorrect"

 

[JohnH]

You can't pass command-line parameter to the exe by just doubleclicking the file.

 

[shreyas123]

I am actually taking a file and putting on it and it is getting run on that file but in the .net it is not even I am applying the main path my .exe then also it is not executing please help me
one more thing i want to interface usb port using .net can I do this and if yes how?
thank you thanks a lot for your concern

 

[JohnH]

The first you say doesn't make sense to me. Any chance of rephrazing that?

About USB, try this http://www.vbdotnetforums.com/showthread.php?t=10743

 

[shreyas123]

Ok I go from the start, my cpp.exe file takes one command line filename as a argument, when I drag one file on cpp.exe it gets executed on that file and the output is shown but when I am executing the same cpp.exe with the same filename on the same drive on which I stored this cpp.exe it is showing that "parameters are incorrect" I dont know why..?

 

[JohnH]

One thing I'm pretty sure is happening when you drag a file onto the executable from Explorer is that the filename is encapsulated by double-quotes. Are you providing this when setting up the parameter string for Process.Start? It would look like this:

Process.Start("c:\apps\cpp.exe", """c:\the path\filename.ext""")

or this:

Dim filename As String = "c:\the path\filename.ext"
Dim param As String = String.Format("""{0}""", filename)
Process.Start("c:\apps\cpp.exe", param)

What happen then is that this correct command is issued:

c:\apps\cpp.exe "c:\the path\filename.ext"

As opposed to this:

c:\apps\cpp.exe c:\the path\filename.ext

..where the space in parameter path would be interpreted as
(param1): "c:\the"
(param2): "path\filename.ext"

Do you see the difference and significance of using quotes in strings?

 

[shreyas123]

auctually i m providing only one quotes and I am not providing any space in my filepath coz the path doesnt contain any spaces in between..
Well I am trying to write a new vb.net project with the same code but now I am saving it somewhere else lets hope for the best.. Ill let u know what happens
Thanks for replying and for the USB thread

And one more thing are there any handlers in the vb.net for handing I/O interfaces

 

[shreyas123]

I have created another project and with the same code with te process.start(....) and now it is getting run
Thanks for helping me out