private void Form1_Load(object sender, EventArgs e)
        {
            fpSpread1.Sheets[0].Cells[0, 0].Value = 3;
            fpSpread1.Sheets[0].Cells[1, 0].Value = 2;
            fpSpread1.Sheets[0].Cells[1, 1].Value = 10;
            fpSpread1.Sheets[0].Cells[0, 2].Value = 1;   
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Average CF
            FarPoint.Win.Spread.AverageConditionalFormattingRule average = new FarPoint.Win.Spread.AverageConditionalFormattingRule(true, true);
            average.IsAbove = true;
            average.IsIncludeEquals = true;
            average.FontStyle = new FarPoint.Win.Spread.SpreadFontStyle(FarPoint.Win.Spread.UnderlineFontStyle.Underline);
            fpSpread1.ActiveSheet.SetConditionalFormatting(1, 1, average);
        }

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        FpSpread1.Sheets(0).Cells(0, 0).Value = 3
        FpSpread1.Sheets(0).Cells(1, 0).Value = 2
        FpSpread1.Sheets(0).Cells(1, 1).Value = 10
        FpSpread1.Sheets(0).Cells(0, 2).Value = 1
    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        'Average CF
        Dim average As New FarPoint.Win.Spread.AverageConditionalFormattingRule(True, True)
        average.IsAbove = True
        average.IsIncludeEquals = True
        average.FontStyle = new FarPoint.Win.Spread.SpreadFontStyle(FarPoint.Win.Spread.UnderlineFontStyle.Underline)
        FpSpread1.ActiveSheet.SetConditionalFormatting(1, 1, average)
    End Sub