WebClient to retrieve web page from URL in ASP.NET 2.0(VB)

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WebClient to retrieve web page from URL in ASP.NET(VB)

This tutorial will show you how to use WebClient to retrieve web page with VB.NET in ASP.NET 2.0. The .NET framework provides an easy to use interface for retrieving resources from a specified URL. Use WebClient Control to perform linking and loading specified URL.

Design three controls in the web page. There are a TextBox, a Button and a Label

Add WebClient Control, a Click Button to the web page

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Dim objWebClient As New WebClient()
Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click

lblHTML.Text = "Request Header Information:"
Dim strHeader As String
For Each strHeader In objWebClient.Headers

lblHTML.Text &= strHeader & "-" & objWebClient.Headers(strHeader) & " "

Next

Dim objUTF8 As New UTF8Encoding()
Dim strRequestHTML As String

strRequestHTML = objUTF8.GetString(objWebClient.DownloadData(txtUrl.Text))

lblHTML.Text = "Response Header Information:"
For Each strHeader In objWebClient.ResponseHeaders

lblHTML.Text = strHeader & "-" & objWebClient.ResponseHeaders("strHeader")

Next
lblHTML.Text &= strRequestHTML

End Sub

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