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It’s easy to read a file into a byte array.  Just use the File.ReadAllBytes static method.  This opens a binary file in read-only mode, reads the contents of the file into a byte array, and then closes the file. string filePath = @"C:test.doc"; byte[] byteArray = File.ReadAllBytes( filePath ); Related posts:C# Read Text File Line-by-LineConvert String Related posts: C# Read Text File Line-by-Line Convert String to Byte Array C# Read Text File into String

Here is the code to read a text file from disk one line at a time into a string.  This code ensures the file exists and properly closes the file if an exception occurs. using System; using System.IO; namespace CSharp411 { class Program { static