Visual Basic 2015 Unleashed

Reading and Writing Binary Files

You can read and write data to binary files using the BinaryReader and BinaryWriter classes. Both require a FileStream instance and enable you to read and write arrays of bytes. The following is an example of creating a binary stream:

Click here to view code image

Dim fs As New FileStream("C:\Temporary\OneFile.bin", FileMode.CreateNew)Dim bs As New BinaryWriter(fs)Dim bytesToWrite() As Byte = New Byte() {128, 64, 32, 16}bs.Write(bytesToWrite)bs.Close()fs.Close()

The Write method enables you to write information as binary, but it also accepts base .NET types such as integers and strings, all written as binary. It provides several overloads so that you can also specify the offset and the number of bytes to be written. ...