Public Overloads Sub ClearConditionalFormating( _
   ByVal row As Integer, _
   ByVal column As Integer _
) 

Dim instance As SheetView
Dim row As Integer
Dim column As Integer
 
instance.ClearConditionalFormating(row, column)

public void ClearConditionalFormating( 
   int row,
   int column
)

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;
            FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule unary = new FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule(FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo, 10, false);
            unary.Operator = FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo;
            unary.Value = 10;
            unary.BackColor = System.Drawing.Color.Red;

            FarPoint.Win.Spread.TopRankedValuesConditionalFormattingRule topRank = new FarPoint.Win.Spread.TopRankedValuesConditionalFormattingRule();
            topRank.IsDescending = true;
            topRank.BackColor = System.Drawing.Color.Tomato;
            topRank.ForeColor = System.Drawing.Color.Yellow;

            //CondtionalFormatting Constructor
            FarPoint.Win.Spread.ConditionalFormatting cf = new FarPoint.Win.Spread.ConditionalFormatting(new FarPoint.Win.Spread.Model.CellRange(0, 0, 2, 2));
            FarPoint.Win.Spread.ConditionalFormatting cf1 = new FarPoint.Win.Spread.ConditionalFormatting(new FarPoint.Win.Spread.Model.CellRange(0, 0, 2, 2), topRank, unary);
            fpSpread1.ActiveSheet.Models.ConditionalFormatting.Add(cf);
            fpSpread1.ActiveSheet.Models.ConditionalFormatting.Add(cf1);           
        }               

        private void button1_Click(object sender, EventArgs e)
        {
            fpSpread1.Sheets[0].ClearConditionalFormating(0, 0);
            //fpSpread1.Sheets[0].ClearConditionalFormating(0, 0, 2, 2);            
        }

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.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
        Dim unary As New FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule(FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo, 10, False)
        unary.Operator = FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo
        unary.Value = 10
        unary.BackColor = Drawing.Color.Red
        unary.FontStyle = New FarPoint.Win.Spread.SpreadFontStyle(FarPoint.Win.Spread.UnderlineFontStyle.None)

        Dim topRank As New FarPoint.Win.Spread.TopRankedValuesConditionalFormattingRule()
        topRank.IsDescending = True
        topRank.BackColor = Drawing.Color.Tomato
        topRank.ForeColor = Drawing.Color.Yellow

        'CondtionalFormatting Constructor
        Dim cf As New FarPoint.Win.Spread.ConditionalFormatting(New FarPoint.Win.Spread.Model.CellRange(0, 0, 2, 2))
        Dim cf1 As New FarPoint.Win.Spread.ConditionalFormatting(New FarPoint.Win.Spread.Model.CellRange(0, 0, 2, 2), topRank, unary)
        FpSpread1.ActiveSheet.Models.ConditionalFormatting.Add(cf)
        FpSpread1.ActiveSheet.Models.ConditionalFormatting.Add(cf1)
End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        'FpSpread1.Sheets(0).ClearConditionalFormating(0, 0)
        FpSpread1.Sheets(0).ClearConditionalFormating(0, 0, 2, 2)
    End Sub