Decompressing a file using DeflateStream (VB) : DeflateStream « File Directory « ASP.NET Tutorial






<%@ Page Language="VB" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.IO.Compression" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim filename As String = Server.MapPath("Data.zip")

        Dim infile As FileStream = File.OpenRead(filename)
        Dim deflateStream As New DeflateStream(infile, CompressionMode.Decompress)
        Dim buffer(infile.Length + 100) As Byte

        Dim offset As Integer = 0
        Dim totalCount As Integer = 0
        While True
            Dim bytesRead As Integer = deflateStream.Read(buffer, offset, 100)
            If bytesRead = 0 Then
                Exit While
            End If
            offset += bytesRead
            totalCount += bytesRead
        End While

        Dim outfile As FileStream = File.Create(Path.ChangeExtension(filename, "txt"))
        outfile.Write(buffer, 0, buffer.Length)
        outfile.Close()

    End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>








10.13.DeflateStream
10.13.1.Decompressing a file using DeflateStream (C#)
10.13.2.Decompressing a file using DeflateStream (VB)