Question

I need to know how to check bytes at an offset. I am using strings for hexes i.e string hexcode1 = "0000A0E1"; and the offset is int offset1 = 30030; how would i check if at offset1 it has hexcode1. please note I do know about filestreams and binarywriters/readers but do not know how to use them with strings. that is partly what i need help with.

Answer 1

This should do the trick. Using a binary reader, offset the file, then read the byte and convert to string, to compare against your current string.

        file = File.Open(myFileLocation); 
        BinaryReader br = new BinaryReader(file);

        string hexcode1 = "0000A0E1";
        int offset1 = 20334;

        file.Seek(offset1, SeekOrigin.Begin);

        String byteRead = br.ReadByte().ToString();

        mycheckbox.Checked = (hexcode1.Equals(byteRead));