Public Property IsUnique As Boolean

Dim instance As UniqueOrDuplicatedConditionalFormattingRule
Dim value As Boolean
 
instance.IsUnique = value
 
value = instance.IsUnique

public bool IsUnique {get; set;}

protected void Page_Load(object sender, System.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;    
                       }

protected void Button1_Click(object sender, EventArgs e)
        {
            //Unique or Duplicate CF
            FarPoint.Web.Spread.UniqueOrDuplicatedConditionalFormattingRule ud = new FarPoint.Web.Spread.UniqueOrDuplicatedConditionalFormattingRule(false);
            ud.IsUnique = true;
            ud.BackColor = Color.Thistle;
            FpSpread1.ActiveSheetView.SetConditionalFormatting(0, 0, 3, 3, ud);
        }

Private Sub Page_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

Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
             'Unique or Duplicate CF
            Dim ud = New FarPoint.Web.Spread.UniqueOrDuplicatedConditionalFormattingRule(False)
            ud.IsUnique = True
            ud.BackColor = Drawing.Color.Thistle
            FpSpread1.ActiveSheetView.SetConditionalFormatting(0, 0, 3, 3, ud)
        End Sub