Read Data from Txt file

I want to create a tile based map with the map data stored in a file the program will read the data one unit at a time and store the char in an array of files example: file1.txt "wwwggww" in the program I want to do something like: file.open("file1.txt"); for (int i = 0; i < 7; i++) file >> tiles; I don't know how to do this in C#