Create Zip File Using Dotnet

in the dotnet framework there are two method for compressing data

1) GZip

2)Deflate

here i am using GZip Stream (System.IO.Compression).

Steps

1) Create Simple Web Application (asp.net with C#).

2) put below control in to page.

2.1) Button (id=”btnCompress”)

3) put below code in to click event of button.

//create one folder in the project (txt)
//get the folder physical path
string filepath = Server.MapPath("txt");
//create file
StreamWriter sw = new StreamWriter(filepath + @"\1.txt");
sw.WriteLine("we compress this file after few min.");
sw.Close();
//open 1.txt file
FileStream objFile = File.OpenRead(filepath + @"\" + "1.txt");
//create zip file
FileStream objZipFile = File.Create(filepath + @"\zip.gz");
//this is compress stream
System.IO.Compression.GZipStream objGZip = new System.IO.Compression.GZipStream(objZipFile, CompressionMode.Compress);
//Read Bytes From Destination File
int bytes = objFile.ReadByte();
while (bytes != -1)
 {
  //write byte in Compress File
   objGZip.WriteByte((byte)bytes);
   bytes = objFile.ReadByte();
 }
 objGZip.Close();
 objZipFile.Close();

Thanks.