Hi Kevin,

I've modified my code by replacing the mmDataGridView control for the mmUltraGrid (7.1).

 Public Sub New()
        'Instantiate and register Business Object
        Me.oMainBizObj = CType(Me.RegisterBizObj(New TaxRateType), TaxRateType)

        ' This call is required by the Windows Form Designer.
        InitializeComponent()

        'Retrieve Data 
        Me.oMainBizObj.GetAllData()

        'Associate the datasource to the DataGridView and toolstrip
        SetBindingSource()

        'Add specific settings for the grid on the current form
        'SetupBaseGrid()

        'It used to work when code was
        'Me.NavControl = Me.dgv
        Me.NavControl = Me.MmUltraGrid1



    End Sub

It seems that the navcontrol property doesn't work with the mmUltraGrid. For instance, when I choose to delete a record, it deletes the first record on the grid, rather than the current record. It looks like it's not refreshing or triggering the "setdatarow" to hidrate the entity object. Another example is when updating data, the rules fire against the first row on the grid rather than the current row. The alert icon, beside the cell that breaks a rule is not shown anymore.

As soon as I replace the infragistrics ultragrid control for the standard mmdatagridview, everthing works fine again.

Please provide any comments or suggestions.
I am getting the impression that the mmUltraGrid does NOT support any of the mmbehaviour. At least it is is not as simple as removing the standard mmDataGridView and replacing it with the new mmUltraGrid.

Thanks
Mario

pd mm version is 2.4