Check File Size using HEAD Request

Demonstrates how to quickly check the size of an HTTP download by using the HEAD request.

Download: Chilkat .NET Assemblies

Chilkat.Http http = new Chilkat.Http();

bool success;

//  Any string unlocks the component for the 1st 30-days.
success = http.UnlockComponent("Anything for 30-day trial");
if (success != true) {
    MessageBox.Show(http.LastErrorText);
    return;
}

//  Send a HEAD request to get the response header:
Chilkat.HttpResponse response = null;
response = http.GetHead("http://www.chilkatsoft.com/download/ChilkatDotNet2.msi");

if (response == null ) {
    MessageBox.Show(http.LastErrorText);
}
else {

    //  The ContentLength property of the HTTP response is
    //  the size of the remote file:
    textBox1.Text += "Size of download = " + response.ContentLength + "\r\n";

}