Get Size of Download using HTTP HEAD

Get the size of a download using an HTTP HEAD request.

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

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;
}

Chilkat.HttpResponse resp = null;

resp = http.GetHead("http://www.chilkatsoft.com/download/ChilkatDotNet2.msi");
if (resp == null ) {
    MessageBox.Show(http.LastErrorText);
}
else {
    string sizeStr;
    sizeStr = resp.GetHeaderField("Content-Length");
    if (sizeStr == null ) {
        MessageBox.Show("No content-length header field");
    }
    else {
        //  Show the size of the file.
        //  You may convert the size string to an integer...
        MessageBox.Show(sizeStr);
    }

}