一、首先要知道刷新网页的路径；

1  frmPointEasyToBeat fpetBeat = new frmPointEasyToBeat(bookNoteId, userInfo.UserId); 2                 fpetBeat.ShowDialog(); 3                 if (webBrowser1.Document?.Window?.Frames != null) 4                 { 5                     foreach (var iFrame in webBrowser1.Document?.Window?.Frames) 6                     { 7                         HtmlWindow window = (HtmlWindow)iFrame; 8                         if (window.Url.ToString().Contains("UploadImagePage.aspx")) 9                         {10                             window.Document?.InvokeScript("searchPhoto", new object[] { });11                         }12                     }13                 }