让progressbar与webbrowser关联起来,达到页面加载与进度条同步

        private void Form1_Load(object sender, EventArgs e)
        {
            Uri url = new Uri("http://blog.csdn.net/long102");
            webBrowser1.Url = url;
            webBrowser1.ProgressChanged += new WebBrowserProgressChangedEventHandler(webBrowser1_ProgressChanged);
        }

        private void webBrowser1_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e)
        {

            progressBar1.Visible = true;
            if ((e.CurrentProgress > 0) && (e.MaximumProgress > 0))
            {
                progressBar1.Maximum = Convert.ToInt32(e.MaximumProgress);
                progressBar1.Step = Convert.ToInt32(e.CurrentProgress);
                progressBar1.PerformStep();
            }
            else if (webBrowser1.ReadyState == WebBrowserReadyState.Complete)
            {
                progressBar1.Value = 0;
                progressBar1.Visible = false;
            }

        }