我的默认浏览器是谷歌Chrome和接受的答案是给出以下错误:

系统无法找到指定的文件。

我解决了这个问题，并设法通过使用以下代码打开默认浏览器的URL:

System.Diagnostics.Process.Start("explorer.exe", "http://google.com");

对于那些发现这个问题的dotnet核心。我在这里找到了解决办法

代码:

private void OpenUrl(string url)
{
    try
    {
        Process.Start(url);
    }
    catch
    {
        // hack because of this: https://github.com/dotnet/corefx/issues/10361
        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
        {
            url = url.Replace("&", "^&");
            Process.Start(new ProcessStartInfo(url) { UseShellExecute = true });
        }
        else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
        {
            Process.Start("xdg-open", url);
        }
        else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
        {
            Process.Start("open", url);
        }
        else
        {
            throw;
        }
    }
}

在研究了很多之后，我觉得大多数给出的答案都不适用于dotnet核心。 1. system.diagnostics.process.start(“http://google.com”);-不会工作与dotnet核心

2.它将工作，但它将阻止新窗口打开的情况下默认浏览器是chrome

 myProcess.StartInfo.UseShellExecute = true; 
    myProcess.StartInfo.FileName = "http://some.domain.tld/bla";
    myProcess.Start();

下面是最简单的，适用于所有场景。

Process.Start("explorer", url);

你可以直接写

System.Diagnostics.Process.Start("http://google.com");

编辑:WebBrowser控件是IE的嵌入式副本。 因此，其中的任何链接都将在IE中打开。

要更改此行为，可以处理导航事件。

我是唯一一个害怕调用System.Diagnostics.Process.Start()的人吗?

        public bool OnBeforeBrowse(IWebBrowser chromiumWebBrowser, IBrowser browser, IFrame frame, IRequest request, bool userGesture, bool isRedirect)
        {
            Request = request;
            string url = Request.Url;
            
            if (Request.TransitionType != TransitionType.LinkClicked)
            {   // We are only changing the behavoir when someone clicks on a link.
                // Let the embedded browser handle this request itself.
                return false;
            }
            else
            {   // The user clicked on a link.  Something like a filter icon, which links to the help for that filter.
                // We open a new window for that request.  This window cannot change.  It is running a JavaScript
                // application that is talking with the C# main program.
                Uri uri = new Uri(url);
                try
                {
                    switch (uri.Scheme)
                    {
                        case "http":
                        case "https":
                            {   // Stack overflow says that this next line is *the* way to open a URL in the
                                // default browser.  I don't trust it.  Seems like a potential security
                                // flaw to read a string from the network then run it from the shell.  This
                                // way I'm at least verifying that it is an http request and will start a
                                // browser.  The Uri object will also verify and sanitize the URL.
                                System.Diagnostics.Process.Start(uri.ToString());
                                break;
                            }
                        case "showdevtools":
                            {
                                WebBrowser.ShowDevTools();
                                break;
                            }
                    }
                }
                catch { }
                // Tell the browser to cancel the navigation.
                return true;
            }
        }

这段代码被设计用于CefSharp，但应该很容易适应。

在UWP:

await Launcher.LaunchUriAsync(new Uri("http://google.com"));