Append to Zip from In-Memory Byte Array

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

Creates a new .zip file where the file within the .zip originates from an in-memory byte array. For demonstration purposes, the example loads a file into a byte array, and then appends the byte array to the .zip. Obviously, the Chilkat Zip API allows for the file to be appended directly without first reading it into a byte array, but the purpose of this example is to show how AppendData is called.

            Chilkat.Zip zip = new Chilkat.Zip();
            zip.UnlockComponent("anything for 30-day trial");

            zip.NewZip("test.zip");

            // Read a file into a byte array.
            FileInfo fInfo = new FileInfo("fw9.pdf");
            long numBytes = fInfo.Length;
            FileStream fStream = new FileStream("fw9.pdf", FileMode.Open, FileAccess.Read);
            BinaryReader br = new BinaryReader(fStream);
            byte[] data = br.ReadBytes((int)numBytes);
            br.Close();
            fStream.Close();

            // Append to the zip object from a byte array.
            // The entry object is returned, but this example does not need it.
            Chilkat.ZipEntry entry = zip.AppendData("ourPdf.pdf", data);

            zip.WriteZipAndClose();

Important: The download for this example does not contain the ChilkatDotNet.dll which
must be downloaded and installed separately at http://www.chilkatsoft.com/downloads.asp.
Once installed, add a reference to the DLL in the project by following the instructions at
http://www.example-code.com/vbdotnet/step2.asp