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Convert file into byte array

Posted By:Pankaj Mishra       Posted Date: August 06, 2008    Points: 10    Category: File Operation    URL: http://www.dotnetspark.com  

Below method is used to convert a file .gif, .jpg, .Doc, .txt or any type of file to its byte array

This function is used to convert file into byte array. some time we require to convert file into byte to save into database or send to other system using remoting.

In C# code sample

private byte [] StreamFile(string filename)
    FileStream fs = new FileStream(filename, FileMode.Open,FileAccess.Read);

    // Create a byte array of file stream length
    byte[] ImageData = new byte[fs.Length];

    //Read block of bytes from stream into the byte array

    //Close the File Stream
    return ImageData; //return the byte data
Same above code in Vb.Net

Private Function StreamFile(ByVal filename As String) As Byte()
    Dim fs As New FileStream(filename, FileMode.Open, FileAccess.Read)
    ' Create a byte array of file stream length
    Dim ImageData As Byte() = New Byte(fs.Length - 1) {}
    'Read block of bytes from stream into the byte array
    fs.Read(ImageData, 0, System.Convert.ToInt32(fs.Length))
    'Close the File Stream
        'return the byte data
    Return ImageData
End Function
Above method accept file path as an input parameter and return you byte array.



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