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Categories / VB.Net / File Directory
 

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