vb.net源码高拍仪的简单介绍
如何用vb.net获取网页源代码
使用webbrowser控件来加载网页,然后再
创新互联公司长期为成百上千家客户提供的网站建设服务,团队从业经验10年,关注不同地域、不同群体,并针对不同对象提供差异化的产品和服务;打造开放共赢平台,与合作伙伴共同营造健康的互联网生态环境。为南湖企业提供专业的网站设计制作、网站设计,南湖网站改版等技术服务。拥有十余年丰富建站经验和众多成功案例,为您定制开发。
Private
Sub
WebBrowser
1_DocumentCompleted下通过使用WebBrowser1.Document.Body.
InnerHtml
来获取网页的源代码,或使用
WebBrowser1.Document.Body.InnerText来获取网页中的文本。之后可以通过字符串控制指令或者
正则表达式
来精确获取到你所需的数据。
VB.NET怎么编模拟袖珍计算器的完整程序?
Public C护激篙刻蕻灸戈熏恭抹lass Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim c As Char
c = Trim(TextBox3.Text)
Select Case c
Case "+"
TextBox4.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
Case "-"
TextBox4.Text = Val(TextBox1.Text) - Val(TextBox2.Text)
Case "*"
TextBox4.Text = Val(TextBox1.Text) * Val(TextBox2.Text)
Case "\"
If Val(TextBox2.Text) = 0 Then
MsgBox("分母为0")
Else
TextBox4.Text = Val(TextBox1.Text) \ Val(TextBox2.Text)
End If
Case "/"
If Val(TextBox2.Text) = 0 Then
MsgBox("分母为0")
Else
TextBox4.Text = Val(TextBox1.Text) / Val(TextBox2.Text)
End If
End Select
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
End
End Sub
End Class
如何用vb.net获得网页的源代码
Dim url As String=" 网址"
Dim httpReq As System.Net.HttpWebRequest
Dim httpResp As System.Net.HttpWebResponse
Dim httpURL As New System.Uri(url)
httpReq = CType(WebRequest.Create(httpURL), HttpWebRequest)
httpReq.Method = "GET"
httpResp = CType(httpReq.GetResponse(), HttpWebResponse)
httpReq.KeepAlive = False ' 获取或设置一个值,该值指示是否与
Internet资源建立持久连接。
Dim reader As StreamReader = _
New StreamReader(httpResp.GetResponseStream,
System.Text.Encoding.GetEncoding(-0))
Dim respHTML As String = reader.ReadToEnd() 'respHTML就是网页源代码
当前题目:vb.net源码高拍仪的简单介绍
URL地址:http://pwwzsj.com/article/hjsego.html