I have an UltraCombo set inside an UltraGrid, with AutoComplete set to "Suggest". The UltraCombo has a DisplayMember of "Name" and a ValueMember of "ID". What I've found is that when I attach a DataFilter to the UltraCombo (I'd like to make it appear blank when the value is zero), if they type a digit that happens to match an ID and also starts a Name, it will do the autocomplete, but the underlying value is never changed. So no AfterUpdate or CellChange is triggered, and when you leave the cell, it reverts to blank. How can I have AutoComplete work and still show the zero-value as blank? Here's my code (Note, if you comment out the line where UltraCombo1.DataFilter is set, updates work fine, but you lose the DataFiltering):
Imports Infragistics.Win.UltraWinGrid
Imports Infragistics.Win
Public Class Form1
Public Sub New()
InitializeComponent()
Dim datatableCombo = New DataTable
datatableCombo.Columns.Add("ID", GetType(Integer))
datatableCombo.Columns.Add("Name", GetType(String))
datatableCombo.Rows.Add({1, "123"})
datatableCombo.Rows.Add({2, "234"})
datatableCombo.Rows.Add({3, "456"})
UltraCombo1.DataFilter = New MyDataFilter()
UltraCombo1.DataSource = datatableCombo
UltraCombo1.ValueMember = "ID"
UltraCombo1.DisplayMember = "Name"
Dim position As Integer = 0
UltraCombo1.DisplayLayout.Bands(0).Columns("ID").Hidden = False
UltraCombo1.DisplayLayout.Bands(0).Columns("ID").Header.VisiblePosition = position
position += 1
UltraCombo1.DisplayLayout.Bands(0).Columns("Name").Hidden = False
UltraCombo1.DisplayLayout.Bands(0).Columns("Name").Header.VisiblePosition = position
position += 1
Dim datatableGrid = New DataTable
datatableGrid.Columns.Add("ID", GetType(Integer))
datatableGrid.Columns.Add("Name", GetType(String))
UltraGrid1.DataSource = datatableGrid
UltraGrid1.DisplayLayout.GroupByBox.Hidden = True
UltraGrid1.DisplayLayout.Override.RowSelectors = DefaultableBoolean.True
UltraGrid1.DisplayLayout.Override.AllowAddNew = AllowAddNew.TemplateOnBottom
UltraGrid1.DisplayLayout.Bands(0).Columns("ID").EditorComponent = UltraCombo1
UltraGrid1.DisplayLayout.Bands(0).Columns("ID").CellClickAction = CellClickAction.EditAndSelectText
UltraGrid1.DisplayLayout.Bands(0).Columns("ID").Style = ColumnStyle.DropDownValidate
End Sub
Public Class MyDataFilter
Implements Infragistics.Win.IEditorDataFilter
Public Function Convert(ByVal convertArgs As Infragistics.Win.EditorDataFilterConvertArgs) As Object Implements Infragistics.Win.IEditorDataFilter.Convert
' Shouldn't affect anything?
convertArgs.Handled = False
Return Nothing
End Function
End Class
End Class
Turns out this was a bug in Infragistics 11.2. I'm not sure at what point they fixed it, but it doesn't happen with version 15.2.