1. W

    Question how to add rectangle with color in datagridview cell

    hi, can you help me? i want to make app like this picture i have made no 1 & 2, but now i want make no 3. the datagridview cell, i want make like this picture, the color list n name list same with the map. but I am confused how to make it? can help me how to make it? or give me a reference to...