private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (!webBrowser1.IsBusy)
Console.WriteLine("加载完毕!");
else
Console.WriteLine("加载中...");
}
C# DocumentCompleted事件多次条用解决方案
原文：http://www.cnblogs.com/q4002945/p/5934261.html