Excel Interior.ColorIndex色彩列表

Microsoft.Office.Interop.Excel.Range range;

 for (int i = 0; i < dt.Columns.Count; i++)
        {
            worksheet.Cells[1, i + 1] = dt.Columns[i].ColumnName;
            range = (Microsoft.Office.Interop.Excel.Range)worksheet.Cells[1, i + 1];
            //设置区域背景色
            range.Interior.ColorIndex = 15;
        }