How do I fix net 8 process start url issue?

Question

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After converting WPF MS framework 4.8 project to net 8
the process.start(url) no longer works.

private void DG_Hyperlink_Click(object sender, RoutedEventArgs e)
{
Hyperlink link = (Hyperlink)e.OriginalSource;
Process.Start(link.NavigateUri.AbsoluteUri);

Quote:
System.ComponentModel.Win32Exception: "An error occurred trying to start process 'https://docs.microsoft.com/en-us/windows/communitytoolkit/mvvm/introduction' with working directory 'E:\Visual Studio\Code Project\DataGridPlus\DataGridPlus\bin\Debug\net8.0-windows'. Das System kann die angegebene Datei nicht finden."

=> cannot find related file

How do I fix this?

What I have tried:

Tried a variant for start url:

Hyperlink link = (Hyperlink)e.OriginalSource;
new ProcessStartInfo("start " + link.NavigateUri.AbsoluteUri);

Posted 21-Apr-24 5:56am

Jo_vb.net

Updated 21-Apr-24 5:57am

v2

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2 solutions

Solution 1

Try setting UseShellExecute to true. This will use the default application to start the process. https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.processstartinfo.useshellexecute?view=net-8.0#system-diagnostics-processstartinfo-useshellexecute

Posted 21-Apr-24 6:43am

Pete O'Hanlon

Comments

Jo_vb.net 21-Apr-24 13:22pm

Tried

using (Process compiler = new Process())
{
compiler.StartInfo.FileName = "explorer.exe";

compiler.StartInfo.Arguments = link.NavigateUri.AbsoluteUri;
compiler.StartInfo.UseShellExecute = false;
compiler.StartInfo.RedirectStandardOutput = true;
//Console.WriteLine(compiler.StandardOutput.ReadToEnd());

compiler.WaitForExit();

Shows error:// "No process is associated with this object."

Found this solution (not default browser but it works)

Process.Start("explorer.exe", link.NavigateUri.AbsoluteUri);

Thanks for your help.

Pete O'Hanlon 21-Apr-24 13:36pm

You set it to false in your code. It needs to be true.

Jo_vb.net 21-Apr-24 14:00pm

Unfortunately with
compiler.StartInfo.UseShellExecute = true;
the same error happens as before.

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Graeme_Grant · Accepted Answer · 2024-04-21T11:39:00

Solution 2

Here is a working example:

C#

string link = "https://docs.microsoft.com/en-us/windows/communitytoolkit/mvvm/introduction";

Process? process = Process.Start(new ProcessStartInfo(link)
{
    UseShellExecute = true
});

process!.WaitForExit();

You can also see it in use in this .Net Core article: .NET Silent ClickOnce Installer for Winform & WPF in C# & VB[^]

Posted 21-Apr-24 11:39am

Graeme_Grant

Updated 21-Apr-24 13:13pm

v2

Comments

Jo_vb.net 21-Apr-24 19:47pm

Great + thanks.

Adjusted it and that works:

private void DG_Hyperlink_Click(object sender, RoutedEventArgs e)
{

Hyperlink link = (Hyperlink)e.OriginalSource;
Process? process = Process.Start(new ProcessStartInfo(link.NavigateUri.AbsoluteUri)
{
UseShellExecute = true
});

process!.WaitForExit();
}

Graeme_Grant 24-Apr-24 4:52am

All good. I would have gone into more details however was on the way out the door to take the wife & kids camping...