C# windows application

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  12 years ago

  by spanish

  spanish kevin

  Shah Alam, Malaysia

  Joined 12 years ago
  Hello, Please i am trying to develop a program that will connect to the internet using C# windows application, however do i need to set up a localhost to connect to internet.
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  11 years ago

  by yf2009

  YF Wong

  Seri Kembangan, Malaysia

  Joined 11 years ago

  Hi, you do not need to setup localhost for C# windows application that will connect to the internet. However, if you want to test the application in offline environment, eg. without internet connection, you may want to setup the localhost. And your application can connect to localhost for the testing. Hope this information is helpful.

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  11 years ago

  by ashwanisoft

  ashwanisoft

  , India

  Joined 13 years ago

  its quite easy to connect to the internet and fetch pages you can use that code below

  Imports System.Net
  Imports System.IO
  
  Public Class AWebFetcher
      Private _nodename As String
  
  
      Public Event DataReceived(ByVal node As String, ByVal _data As String)
      Public Event ErrorReceived(ByVal node As String, ByVal _errmsg As String)
  
      Public Sub New(ByVal node As String)
          _nodename = node
      End Sub
  
      Public Sub Fetch(ByVal _url As String)
          'First, you need to convert URL of the webpage from text format, to "System.Uri".
          Dim requestUri As New Uri(_url)
  
          'Then, we will create the "WebClient".
          Dim wc As New WebClient
  
  
          'Followed by adding the "link" to the "I_Receive_Data" Event Handler (when download finishes, it gets the webpage source)
          AddHandler wc.DownloadStringCompleted, AddressOf I_Receive_Data
  
          'Trap for possible network errors
          Try
              wc.DownloadStringAsync(requestUri)
          Catch ex As WebException
              RaiseEvent ErrorReceived(_nodename, ex.Message)
          End Try
      End Sub
  
      Private Sub I_Receive_Data(ByVal sender As Object, ByVal e As System.Net.DownloadStringCompletedEventArgs)
          'Remember, the "DownloadStringCompleted" event fires even if error happened in download process
          If Not e.Error Is Nothing Then Exit Sub
          'We checked it by the e.Error argument
          'e.Result contains requested webpage as a string
          RaiseEvent DataReceived(_nodename, e.Result)
      End Sub
  End Class
  

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