webBrowser.Document.Body.InnerHtml 未将对象引用设置到对象的实例未将对象引用设置到对象的实例。

[niesen111]

private void button1_Click(object sender, EventArgs e)
{
string url = @"http://t.sina.com.cn/k/" + Class1.ChangeKeywordEncoding(textBox1.Text, "utf-8");

WebClient webclient = new WebClient();
webBrowser2.Url = new Uri(url);

string webcode = webBrowser2.Document.Body.InnerHtml;
MessageBox.Show(webcode);

[wuyq11]

在webBrowser_DocumentCompleted里获取
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
while (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
{
Application.DoEvents();
}
}