C# 调用浏览器打开网址

• 调用方法体

          public void OpenBrowser()
          {
              string url = "http://localhost:8055/api";
              bool openRes = OpenBrowserHelper.OpenChromeBrowserUrl(url);
  
              if (!openRes)
                  openRes = OpenBrowserHelper.OpenDefaultBrowserUrl(url);
  
              if (!openRes)
              {
                  // 打开下载链接，从官网下载 谷歌
                  if (MessageBox.Show("系统未安装谷歌（Chrome）浏览器，是否下载安装？", null, MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question) == DialogResult.Yes)
                  {
                      OpenBrowserHelper.OpenIe("https://www.google.cn/chrome/");
                  }
              }
          }

• 打开浏览器帮助类

  public class OpenBrowserHelper
      {
          /// <summary>
          /// 调用谷歌（Chrome）浏览器
          /// </summary>
          /// <param name="url">打开网页的链接</param>
          public static bool OpenChromeBrowserUrl(string url)
          {
              bool isOpen = true;
              try
              {
                  // 谷歌浏览器就用谷歌打开，没找到就用系统默认的浏览器
                  // 谷歌卸载了，注册表还没有清空，程序会返回一个"系统找不到指定的文件。"的bug
                  var chromeKey = @"SoftwareMicrosoftWindowsCurrentVersionApp Pathschrome.exe";
                  // 通过注册表找到谷歌浏览器安装路径
                  string chromeAppFileName = (string)(Registry.GetValue("HKEY_LOCAL_MACHINE" + chromeKey, "", null) ?? Registry.GetValue("HKEY_CURRENT_USER" + chromeKey, "", null));
                  // 找到谷歌浏览器则打开
                  if (!string.IsNullOrWhiteSpace(chromeAppFileName))
                  {
                      Process.Start(chromeAppFileName, url);
                  }
                  else
                  {
                      isOpen = false;
                      //默认浏览器打开
                     //OpenDefaultBrowserUrl(url);
                  }
              }
              catch
              {
                  isOpen = false;
              }
  
              return isOpen;
          }
  
          /// <summary>
          /// 调用IE浏览器
          /// </summary>
          /// <param name="url"></param>
          public static void OpenIe(string url)
          {
              // IE浏览器路径安装：C:Program FilesInternet Explorer
              // at System.Diagnostics.process.StartWithshellExecuteEx(ProcessStartInfo startInfo)注意这个错误
              try
              {
                  if (File.Exists(@"C:Program FilesInternet Exploreriexplore.exe"))
                  {
                      ProcessStartInfo processStartInfo = new ProcessStartInfo
                      {
                          FileName = @"C:Program FilesInternet Exploreriexplore.exe",
                          Arguments = url,
                          UseShellExecute = false,
                          CreateNoWindow = true
                      };
                      Process.Start(processStartInfo);
                  }
                  else
                  {
                      if (File.Exists(@"C:Program Files (x86)Internet Exploreriexplore.exe"))
                      {
                          ProcessStartInfo processStartInfo = new ProcessStartInfo
                          {
                              FileName = @"C:Program Files (x86)Internet Exploreriexplore.exe",
                              Arguments = url,
                              UseShellExecute = false,
                              CreateNoWindow = true
                          };
                          Process.Start(processStartInfo);
                      }                    
                  }
              }
              catch (Exception exception)
              {                
              }
          }
  
          /// <summary>
          /// 调用系统默认浏览器（用户自己设置了默认浏览器）
          /// </summary>
          /// <param name="url"></param>
          public static bool OpenDefaultBrowserUrl(string url)
          {
              bool isOpen = true;
              try
              {
                  //从注册表中读取默认浏览器可执行文件路径
                  RegistryKey key = Registry.ClassesRoot.OpenSubKey(@"httpshellopencommand");
                  if (key != null)
                  {
                      string browserPath = string.Empty;
                      string[] splitArr = new string[] { };
                      string browser = key.GetValue("").ToString();
  
                      //browser是默认浏览器，不同的浏览器后面的参数不一样。例如："D:Program Files (x86)Googlechrome.exe" -- "%1"
                      var lastIndex = browser.IndexOf(".exe", StringComparison.Ordinal);
                      if (lastIndex == -1)
                          lastIndex = browser.IndexOf(".EXE", StringComparison.Ordinal);
  
                      if (lastIndex != -1)
                      {
                          splitArr = browser.Split(""");
                      }
                      //大于0 说明 按照 " 切割到数据
                      if (splitArr.Length > 0)
                      {
                          browserPath = splitArr[1];
                      }
                      else if (splitArr.Length == 0 && lastIndex != -1) //说明有浏览器，列如：D:QQBrowserQQBrowser.exe
                      {
                          browserPath = browser;
                      }
                      //打开浏览器
                      var result = Process.Start(browserPath, url);
  
                      //调用IE
                      //if (result == null)
                      //    OpenIe(url);
                  }
                  else
                  {
                      isOpen = false; 
                     //OpenIe(url);
                  }
                      
              }
              catch
              {
                  isOpen = false;
              }
              return isOpen;
          }
      }