Public Sub GetValidConditionalFormat( _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByRef prePaintCFRules As IPrePaintConditionalFormattingRule(), _
   ByRef prePaintTextCFRules As IPrePaintTextConditionalFormattingRule() _
) 

Dim instance As SheetView
Dim row As Integer
Dim column As Integer
Dim prePaintCFRules As IPrePaintConditionalFormattingRule()
Dim prePaintTextCFRules As IPrePaintTextConditionalFormattingRule()
 
instance.GetValidConditionalFormat(row, column, prePaintCFRules, prePaintTextCFRules)

public void GetValidConditionalFormat( 
   int row,
   int column,
   out IPrePaintConditionalFormattingRule[] prePaintCFRules,
   out IPrePaintTextConditionalFormattingRule[] prePaintTextCFRules
)

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)
        {
FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule unary = new FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule(FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo, 3, false);
unary.Operator = FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo;
//unary.Value = 3;
unary.BackColor = Color.Red;
unary.FontStyle = new FarPoint.Win.Spread.SpreadFontStyle(RegularBoldItalicFontStyle.Bold);

fpSpread1.ActiveSheet.SetConditionalFormatting(1, 1, unary);
fpSpread1.ActiveSheet.SetConditionalFormatting(0, 0, unary);

FarPoint.Win.Spread.IPrePaintConditionalFormattingRule[] prePaintRule;
FarPoint.Win.Spread.IPrePaintTextConditionalFormattingRule[] prePaintTextRule;
fpSpread1.ActiveSheet.GetValidConditionalFormat(0, 0, out prePaintRule, out prePaintTextRule);

FarPoint.Win.Spread.PrePaintResult pp = prePaintRule[0].Execute(0, 0, fpSpread1.ActiveSheet.Cells[0, 0].Value);
FarPoint.Win.Spread.StyleInfo source = new FarPoint.Win.Spread.StyleInfo();
fpSpread1.ActiveSheet.Cells[1, 1].Value = 3;
FarPoint.Win.Spread.PrePaintResult pp1 = prePaintRule[0].Execute(1, 1, fpSpread1.ActiveSheet.Cells[1, 1].Value);        
        }

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
    End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Unary comparison CF
Dim unary As New FarPoint.Win.Spread.UnaryComparisonConditionalFormattingRule(FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo, 3, False)
unary.[Operator] = FarPoint.Win.Spread.UnaryComparisonOperator.EqualTo
'unary.Value = 3;
unary.BackColor = Color.Red
unary.FontStyle = New FarPoint.Win.Spread.SpreadFontStyle(RegularBoldItalicFontStyle.Bold)

FpSpread1.ActiveSheet.SetConditionalFormatting(1, 1, unary)
FpSpread1.ActiveSheet.SetConditionalFormatting(0, 0, unary)

Dim prePaintRule As FarPoint.Win.Spread.IPrePaintConditionalFormattingRule()
Dim prePaintTextRule As FarPoint.Win.Spread.IPrePaintTextConditionalFormattingRule()
FpSpread1.ActiveSheet.GetValidConditionalFormat(0, 0, prePaintRule, prePaintTextRule)

Dim pp As FarPoint.Win.Spread.PrePaintResult = prePaintRule(0).Execute(0, 0, FpSpread1.ActiveSheet.Cells(0, 0).Value)
Dim source As New FarPoint.Win.Spread.StyleInfo()
FpSpread1.ActiveSheet.Cells(1, 1).Value = 3
Dim pp1 As FarPoint.Win.Spread.PrePaintResult = prePaintRule(0).Execute(1, 1, FpSpread1.ActiveSheet.Cells(1, 1).Value)
    End Sub