从本节开始，将对HtmlDocument类的一些属性和方法做讲解。

窗体设计界面如下：

转到按钮代码如下：

    Private Sub btnGoto_Click(sender As Object,e As EventArgs) Handles btnGoto.Click
        wbMain.Navigate(txtGotoUrl.Text)
    End Sub

当wbMain载入网页后，就可以获得网页相关信息了：

    Private Sub btnInfo_Click(sender As Object,e As EventArgs) Handles btnInfo.Click
        Dim htmlInfo As String = ""
        Dim document As HtmlDocument
        document = wbMain.Document

        htmlInfo &= "网页背景色：" & document.BackColor.ToString & ControlChars.CrLf
        htmlInfo &= "网页前景色：" & document.ForeColor.ToString & ControlChars.CrLf
        htmlInfo &= "网页标题：" & document.Title & ControlChars.CrLf
        htmlInfo &= "网址：" & document.Url.ToString & ControlChars.CrLf
        htmlInfo &= "Cookie：" & document.Cookie & ControlChars.CrLf
        htmlInfo &= "所在域：" & document.Domain & ControlChars.CrLf
        htmlInfo &= "网页编码：" & document.Encoding & ControlChars.CrLf
        htmlInfo &= "链接颜色：" & document.LinkColor.ToString & ControlChars.CrLf
        htmlInfo &= "链接访问颜色：" & document.VisitedLinkColor.ToString & ControlChars.CrLf

        txtInfo.Text = htmlInfo
    End Sub

运行时如下图：

这里用了我的网站来做说明

由于.net平台下C#和vb.NET很相似，本文也可以为C#爱好者提供参考。

学习更多vb.net知识，请参看 vb.net 教程 目录