C # dllimport raises SEHException when calling Process.Start

Question

I have a 32-bit dll that I need to call from a 64-bit .NET Core Application.

My way to do this is to create a 32-bit console application, which basically looks like this:

[DllImport("x.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)]
static extern int x(int var);

static void Main(string[] args)
{
    Console.log("I Started!");
    int y = x(0);
    //do something with y.
}

And then call this from my 64bit main application with Process.Start("consoleapp.exe")

When I run consoleapp.exe, it prints "I Started!" as expected, and x.dll also performs correctly.

However, when I call consoleapp.exe from process.Start (), I get a SEHException after "I Started!" printed on the output (that is, when the DllImport part is deleted).

This is how I run the process in my 64-bit application

ProcessStartInfo p = new ProcessStartInfo("consoleapp.exe");
Process process = Process.Start(p);
process.WaitForExit();

I have already tried to impersonate the user and run the Process object as an administrator, and it does not work.

dll, x.dll consoleapp.exe, console.writeline() , x.dll.

SEHException - 0x80004005, E_FAIL "Unspecified Failure"

---

UPDATE: :

  at Consoleapp.Consoleapp.x(int32 var)
  at Consoleapp.Consoleapp.Main(String[] args)

, . External Exception, , (InnerException - null). - .

: " ".

x.dll CSIDL_COMMON_APPDATA. , , - - console.log Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)) , . - , x.dll , , , , , .., SEHExceptions .

Answer 1

public static extern x(int var);

/ void

public static extern void x(int var);