.Net Core 2.0 Process.Start throws “The specified executable is not a valid application for this OS platform”

Question

I need to let a .reg file and a .msi file execute automatically using whatever executables these two file types associated with on user\'s Windows.

.NET Core 2.0 Pro

Answer 1

use this to open a file

new ProcessStartInfo(@"C:\Temp\1.txt").StartProcess();

need this extension method

public static class UT
{
    public static Process StartProcess(this ProcessStartInfo psi, bool useShellExecute = true)
    {
        psi.UseShellExecute = useShellExecute;
        return Process.Start(psi);
    }
}

Answer 2

In case this bothers you as well:

For those of us that are used to simply call Process.Start(fileName); the above syntax may give us anxiety... So may I add that you can write it in a single line of code?

new Process { StartInfo = new ProcessStartInfo(fileName) { UseShellExecute = true } }.Start();

Answer 3

You can also set the UseShellExecute property of ProcessStartInfo to true

var p = new Process();
p.StartInfo = new ProcessStartInfo(@"C:\Users\user2\Desktop\XXXX.reg")
{ 
    UseShellExecute = true 
};
p.Start();

Seems to be a change in .net Core, as documented here.

Answer 4

You have to execute cmd.exe

var proc = Process.Start(@"cmd.exe ",@"/c C:\Users\user2\Desktop\XXXX.reg")

don't forget the /c

Answer 5

You can set UseShellExecute to true and include this and your path in a ProcessStartInfo object:

Process.Start(new ProcessStartInfo(@"C:\Users\user2\Desktop\XXXX.reg") { UseShellExecute = true });