vb.net解析url vb解析xml

求VB.NET读取网页内容写法

Imports System.Net

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Imports System.IO

Imports System.Text.RegularExpressions

Public Class Form1

Private Sub button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

Dim stream As IO.Stream = WebRequest.Create(UrlAdress).GetResponse().GetResponseStream()

'注意urladress为你上面的网页地址。

Dim sr As StreamReader = New StreamReader(stream, System.Text.Encoding.UTF8)

Label1.Text = Regex.Match(sr.ReadToEnd, "回答采纳率").ToString

'sr。readtoend读取网页流到末尾，即使用正则表达式从网页流中提取“回答采纳率”，赋值给Label1.Text ‘没有则为空

sr.Dispose() '关闭流

End Sub'要提取什么东西用正则表达式最好

End Class

急急急！！！请问如何在VB.NET中通过URL传参和在新的页面接收参数的值呢【Web网站】

在发送页面用get：如点击button时response.redirect（"接收页的url"?canshu=textbox.text）

；

然后在接收页面用Request.QueryString["canshu"].toString（）； 这样就接受到textbox里的值了。

vb.net 如何指定访问来路来访问一个URL？

'GET数据通用模板,返回源码

Function DownBitmap(ByVal URL_Post As String, ByVal Referer_Post As String, ByVal Accept_Post As String, ByVal UserAgent_Post As String _

, ByVal KeepAlive_Post As Boolean, ByVal CookieContainer_Post As CookieContainer) As Bitmap

Dim HttpPostUrl As New System.Uri(URL_Post)

Dim reqp As HttpWebRequest

reqp = CType(WebRequest.Create(HttpPostUrl), HttpWebRequest)

reqp.Method = "GET"

reqp.Referer = Referer_Post

reqp.Accept = Accept_Post

reqp.UserAgent = UserAgent_Post

reqp.KeepAlive = KeepAlive_Post

reqp.CookieContainer = CookieContainer_Post '设置Cookie

Dim resP As WebResponse = reqp.GetResponse

Dim bmp As Bitmap = New Bitmap(resP.GetResponseStream)

resP.Close() '关闭

Return bmp

End Function

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