Check out internet connection using asp.net C#
---------------------------------------------------------------*.aspx
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<asp:Button runat="server" ID="Button1" Text="Check Internet Connection" onclick="Button1_lick"/>
<asp:Label runat="server" ID="Label1" />
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.cs
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using System.Net;
protected void Button1_Click(object sender, EventArgs e)
{
try
{
WebClient wc = new WebClient();
byte[] dataSize = null;
dataSize = wc.DownloadData("http://www.facebook.com");
if (dataSize!= null && dataSize.Length > 0)
Label1.Text = " Connection is Available.";
else
Label1.Text = " Connection is not Available.";
}
catch (Exception ex)
{
}
}