POI setting Cell Background to a Custom Color

Question

I want to set custom color to a cell\'s background.
I use HSSFWorkbook (can\'t use anything else).

HSSFPalette palette = aWorkBook.getCustom         


        

Answer 1

Slot free in NPOI excel indexedcolors from 57+

            Color selColor;

        var wb = new HSSFWorkbook();

        var sheet = wb.CreateSheet("NPOI");
        var style = wb.CreateCellStyle();
        var font = wb.CreateFont();
        var palette = wb.GetCustomPalette();

        short indexColor = 57; 
        palette.SetColorAtIndex(indexColor, (byte)selColor.R, (byte)selColor.G, (byte)selColor.B);

        font.Color = palette.GetColor(indexColor).Indexed;