Hello ayrus,

I am checking about the progress of this issue. Please let me know If you need any further assistance on this.

Boris,

Thank You for your response; I have downloaded your sample and it works fine.

The problem is that I am not able to replicate the what you have done when I create a sample project.

I am using Infragistics 11.2.2011.2.2019 control on Win 7 64Bit OS:

Here is what I have done:

1) Created VB.Net 2010 project

2) Added 3 text box and 1 button control

3) Added Calcmanager Control - CLR 4x

4) Added "Infragistics2.Win.UltraWinCalcManager.v11.2.FormulaBuilder" reference

5) Copied the following sub:

   Private Sub ShowFormulaBuilderDialog(ByVal formulaProvider As IFormulaProvider)
        ' Declare a new FormulaBuilderDialog
        Dim formulaBuilderDialog As New FormulaBuilderDialog(formulaProvider)
        ' Show the dialog
        Dim dResult As DialogResult = formulaBuilderDialog.ShowDialog(Me)
        ' If the user cancelled, do nothing
        If dResult = System.Windows.Forms.DialogResult.Cancel Then
            Return
        End If
        ' Apply the formula
        formulaProvider.Formula = formulaBuilderDialog.Formula
    End Sub

and am getting following error on following line:

Dim formulaBuilderDialog As New FormulaBuilderDialog(formulaProvider)

"Error    1    Type 'FormulaBuilderDialog' is not defined.    C:\Users\surya\Desktop\Formulae Bldr 3\Formulae Bldr 3\Form1.vb    13    41    Formulae Bldr 3"

Thanks Boris; works fine Now.