or
GridViewCellInfo cellInfo = radGridView.Rows[i].Cells[j];cellInfo.Style.DrawFill = true;cellInfo.Style.NumberOfColors = 1;cellInfo.Style.CustomizeFill = true;cellInfo.Style.DrawBorder = true;cellInfo.Style.CustomizeBorder = true;cellInfo.Style.BorderWidth = 1;cellInfo.Style.BorderColor = Color.Red;cellInfo.Style.BorderColor2 = Color.Red;cellInfo.Style.BorderColor3 = Color.Red;cellInfo.Style.BorderColor4 = Color.Red;cellInfo.Style.BackColor = Color.Yellow;