向WebBrowser写入HTML

向WebBrowser写入HTML：

private void Form_Load(object sender, EventArgs e)
{
    webBrowser1.Navigate("about:blank");
}

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    if (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
        return;
    if (e.Url.AbsoluteUri.Equals("about:blank", StringComparison.OrdinalIgnoreCase))
    {
        StringBuilder sb = new StringBuilder();
        sb.AppendLine("<html>");
        sb.AppendLine("<head><title></title></head>");
        sb.AppendLine("<body>");
        sb.AppendLine("<img alt=\"\" src=\"http://goo.gl/ynH9\"/>");
        sb.AppendLine("</body>");
        sb.AppendLine("</html>");
        webBrowser1.Document.Write(sb.ToString());
    }
}

这一句不可少 webBrowser1.Navigate("about:blank");