How to write data at a particular position in c#?

Question

I am making an application in c#. In that application I have one byte array and I want to write that byte array data to particular position.

Here i used the followin

Answer 1

You can set the position inside the stream like this:

writer.BaseStream.Seek( 1000, SeekOrigin.Begin);

Add this before your WriteLine code.

Note that I have not included any code to check that there is at least 1000 chars inside the file to start with.