FileStream.Read Method Reads a block of bytes

 

Imports System
Imports System.IO
Class Test

Public Shared Sub Main()
        Dim pathSource As String = "c:\tests\source.txt"
        Dim pathNew As String = "c:\tests\newfile.txt"
        Using fsSource As FileStream = New FileStream(pathSource,FileMode.Open, FileAccess.Read)
                Dim bytes() As Byte = New Byte((fsSource.Length) - 1) {}
                Dim numBytesToRead As Integer = CType(fsSource.Length,Integer)
                Dim numBytesRead As Integer = 0

                While (numBytesToRead > 0)
                    Dim n As Integer = fsSource.Read(bytes, numBytesRead,numBytesToRead)
                    If (n = 0) Then
                        Exit While
                    End If
                    numBytesRead = (numBytesRead + n)
                    numBytesToRead = (numBytesToRead - n)
                End While    
            numBytesToRead = bytes.Length
            Using fsNew As FileStream = New FileStream(pathNew,FileMode.Create, FileAccess.Write)
                fsNew.Write(bytes, 0, numBytesToRead)
            End Using
        End Using
End Sub
End Class

Related examples in the same category

1.	Use FileStream to store and read file
2.	Read and Write to a Newly Created Data File
3.	FileStream Class
4.	Create FileStream with FileMode.Append, FileAccess.Write, FileShare.Write
5.	FileStream Constructor (String, FileMode, FileSystemRights, FileShare, Int32, FileOptions, FileSecurity)
6.	FileStream.CanRead Property gets a value indicating whether the current stream supports reading.
7.	FileStream.CanSeek Property gets a value indicating whether the current stream supports seeking.
8.	FileStream.CanWrite Property gets a value indicating whether the current stream supports writing.
9.	FileStream.CanRead And FileStream.CanWrite
10.	FileStream.Seek Method sets the current position of this stream to the given value.
11.	FileStream Class Exposes a Stream around a file
12.	FileStream.CanRead Property tells whether the current stream supports reading.
13.	FileStream.CanSeek Property tells whether the current stream supports seeking.
14.	FileStream.CanWrite Property tells whether the current stream supports writing.
15.	FileStream.ReadByte Method Reads a byte from the file
16.	FileStream.Seek Method Sets the current position of this stream to the given value.
17.	Read and Write to a Newly Created Data File

FileStream.Read Method Reads a block of bytes : FileStream « File Directory « VB.Net

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