Running a program with System.Diagnostics.Process.Start causes an Application Error

Question

On my PC DWG files open with:

"C:\Program Files\AutoCAD LT 2007\acadlt.exe" "%1"

If I run this from the command line:

"C:\Program Files\AutoCAD LT 2007\acadlt.exe" "C:\Some Path\Test.dwg"

AutoCAD Lite open the DWG file.

Similarly if I open a command prompt and run the same exe with argument, it works fine.

However if I use

var proc = new System.Diagnostics.Process();
var info = new System.Diagnostics.ProcessStartInfo();

and then

info.FileName = "C:\Some Path\Test.dwg";
proc.StartInfo = info;
proc.Start();

or

info.FileName = "C:\Program Files\AutoCAD LT 2007\acadlt.exe";
info.Arguments= "C:\Some Path\Test.dwg"
proc.StartInfo = info;
proc.Start();

or

info.FileName = "cmd.exe";
info.Arguments= "C:\Program Files\AutoCAD LT 2007\acadlt.exe" "C:\Some Path\Test.dwg"
proc.StartInfo = info;
proc.Start();

I get the following error:

---

acadlt.exe - Application Error

The instruction at "0x01317c8c" referenced memory at "0x01317c8c". The memory could not be "read".

Click on OK to terminate the program Click on CANCEL to debug the program

OK Cancel

---

Incidentally the code works ok if I step through the code with the debugger.

Anyone know how I can use Process.Start to open this DWG?

Answer 1

Make sure to have the correct working folder specified:

info.WorkingDirectory = "same path as current directory in cmd.exe";