Public Function webCaptureContent(ByVal mWebsiteUrl As String, ByVal mWebsiteType As Boolean) As String
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'启动一次具体的数据采集工作,返回采集到的HTML内容:要求必须输入带://的全地址数据
On Error Resume Next
Dim Str_WebContent As String = "请输入查找网站地址."
Dim wb As WebClient = New WebClient() '//创建一个WebClient实例
If mWebsiteUrl.IndexOf("://") 0 Then
'//获取或设置用于对向 Internet 资源的请求进行身份验证的网络凭据。（可有可无）
wb.Credentials = CredentialCache.DefaultCredentials
'//从资源下载数据并返回字节数组。（加@是因为网址中间有"/"符号）
Dim pagedata As Object = wb.DownloadData(mWebsiteUrl)
'//转换字符
If mWebsiteType Then
Str_WebContent = Encoding.Default.GetString(pagedata)
Else
Str_WebContent = Encoding.UTF8.GetString(pagedata)
End If
End If
Return Str_WebContent '提取出来新闻内容,删除Body前后的多余内容,同时补充上该 Body标记,形成完整的内容 Str_WebContent '
End Function
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
打开IE浏览器，再打开收藏夹，里面就有你收藏了的一些网址，想看哪个就选中他再右击---属性。就可以知道他的URL地址了
'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