Topic: How do I add a simple drop-down list box to a single Flexgrid Cell?

TerryStringer said 1 year, 2 months ago:

I’ve read the Main Application in the documentation but still am totally lost on how to add a simple drop-down list box to a cell in my Flexgrid. I’m using the grid in unbound mode. So, for example, how can I add a drop-down listbox on cell GridTable(1,1)? The list box contains:

Item 1
Item 2
Item 3

That’s it. The grid is non-editable. I just need the user to select one of the three items.

I’m building this in Code-behind in VB.

Thank you!

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Anupam_P17p said 1 year, 2 months ago:

Hi Terry,

You may implement it this way, in PrepareCellForEdit event:

    Private Sub GridTable_PrepareCellForEdit(ByVal sender As Object, ByVal e As C1.WPF.FlexGrid.CellEditEventArgs) Handles GridTable.PrepareCellForEdit
        If e.Row = 1 AndAlso e.Column = 1 Then
            Dim _border As Border = DirectCast(DirectCast(e.Editor, System.Windows.FrameworkElement), System.Windows.Controls.Border)
            Dim cmb As C1.WPF.FlexGrid.C1FlexComboBox = CType(_border.Child, C1.WPF.FlexGrid.C1FlexComboBox)
            cmb.DropDownItems = New String() {"Item 1″, "Item 2″, "Item 3″}
            cmb.IsEditable = False
        End If
    End Sub

Cheers,
Anupam.

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Anupam_P17p said 1 year, 2 months ago:

I just figured another way to implement this. Cellfactory

Here’s the customized CellFactory :

Class MyCellFactory
    Inherits C1.WPF.FlexGrid.CellFactory

    Public Overrides Function CreateCellEditor(ByVal grid As C1.WPF.FlexGrid.C1FlexGrid, ByVal cellType As C1.WPF.FlexGrid.CellType, ByVal range As C1.WPF.FlexGrid.CellRange) As System.Windows.FrameworkElement
        If range.Row = 0 And range.Column = 0 Then
            Dim _border As Border = CType(MyBase.CreateCellEditor(grid, cellType, range), Border)
            Dim cmb As C1.WPF.FlexGrid.C1FlexComboBox = CType(_border.Child, C1.WPF.FlexGrid.C1FlexComboBox)
            cmb.DropDownItems = New String() {"Item 1″, "Item 2″, "Item 3″}
            cmb.IsEditable = False
            Return CType(_border, FrameworkElement)
        Else
            Return MyBase.CreateCellEditor(grid, cellType, range)
        End If
    End Function
End Class

And then, assign this to GridTable’s CellFactory.

GridTable.CellFactory = New MyCellFactory

Cheers,
Anupam.

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How do I add a simple drop-down list box to a single Flexgrid Cell?

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