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

Dim http As New Chilkat.Http()

Dim success As Boolean

'  Any string unlocks the component for the 1st 30-days.
success = http.UnlockComponent("Anything for 30-day trial.")
If (success <> true) Then
    MsgBox(http.LastErrorText)
    Exit Sub
End If


Dim resp As Chilkat.HttpResponse

resp = http.GetHead("http://www.chilkatsoft.com/download/ChilkatDotNet2.msi")
If (resp Is Nothing ) Then
    MsgBox(http.LastErrorText)
Else
    Dim sizeStr As String
    sizeStr = resp.GetHeaderField("Content-Length")
    If (sizeStr = vbNullString ) Then
        MsgBox("No content-length header field")
    Else
        '  Show the size of the file.
        '  You may convert the size string to an integer...
        MsgBox(sizeStr)
    End If

End If