ASP.NET Tutorial/File Directory/DeflateStream
Decompressing a file using DeflateStream (C#)
<source lang="csharp">
<%@ Page Language="C#" %> <%@ Import Namespace="System.IO" %> <%@ Import Namespace="System.IO.rupression" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
string filename = Server.MapPath("Data.zip");
FileStream infile = File.OpenRead(filename);
DeflateStream deflateStream = new DeflateStream(infile, CompressionMode.Decompress);
byte[] buffer = new byte[infile.Length + 100];
int offset = 0;
int totalCount = 0;
while (true)
{
int bytesRead = deflateStream.Read(buffer, offset, 100);
if (bytesRead == 0)
{ break; }
offset += bytesRead;
totalCount += bytesRead;
}
FileStream outfile = File.Create(Path.ChangeExtension(filename, "txt"));
outfile.Write(buffer, 0, buffer.Length);
outfile.Close();
}
</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">
<title>Untitled Page</title>
</head> <body>
<form id="form1" runat="server">
</form>
</body> </html></source>
Decompressing a file using DeflateStream (VB)
<source lang="csharp">
<%@ Page Language="VB" %> <%@ Import Namespace="System.IO" %> <%@ Import Namespace="System.IO.rupression" %> <!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">
</form>
</body> </html></source>
