我在。net 5中使用它，在Windows上使用Windows窗体。它甚至适用于其他默认浏览器(如Firefox):

Process.Start(new ProcessStartInfo { FileName = url, UseShellExecute = true });

基于这个和这个。

我试着

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

这适用于大多数情况下，但我遇到了一个问题，有一个指向文件的url:

系统无法找到指定的文件。

所以，我尝试了这个解决方案，只是做了一些修改:

System.Diagnostics.Process.Start("explorer.exe", $"\"{uri}\"");

不用“”包装url，资源管理器会打开您的文档文件夹。

这适用于。net 5 (Windows):

 ProcessStartInfo psi = new ProcessStartInfo {
   FileName = "cmd.exe",
     Arguments = $ "/C start https://stackoverflow.com/",
     WindowStyle = ProcessWindowStyle.Hidden,
     CreateNoWindow = true
 };
 Process.Start(psi);

解决Net 6的问题 我从ChromeLauncher使用这个代码 ，默认浏览器会喜欢它

internal static class ChromeLauncher
{
    private const string ChromeAppKey = @"\Software\Microsoft\Windows\CurrentVersion\App Paths\chrome.exe";

    private static string ChromeAppFileName
    {
        get
        {
            return (string) (Registry.GetValue("HKEY_LOCAL_MACHINE" + ChromeAppKey, "", null) ??
                                Registry.GetValue("HKEY_CURRENT_USER" + ChromeAppKey, "", null));
        }
    }

    public static void OpenLink(string url)
    {
        string chromeAppFileName = ChromeAppFileName;
        if (string.IsNullOrEmpty(chromeAppFileName))
        {
            throw new Exception("Could not find chrome.exe!");
        }
        Process.Start(chromeAppFileName, url);
    }
}

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。

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");