Codez un logiciel

Hi, You need to code a software for Windows 8 / 10 in "AnyCPU" target. It should be wrote in C#. It's a basic hexeditor. The software will be able to : - Open a file - Display it - Allow to modify it - Save it - Undo / Redo a change The software should display : - The offset of a line a the left - The ASCII content of the line - The Hexadecimal version at the right - The current cursor position (in hexa) Ask me any question to give a correct price / time to dev it !