RowFormatting and ElementVisibility.Collapsed Problem

[OD]

Hello everybody,

I have a problem using the element visibilty property on ElementVisibility.Collapsed on the radgridview RowFormatting event.

When i try to put the row visibility to ElementVisibility.Collapsed, there is a strange behavior, the rows are not correctly displayed.

Here is a sample that reproduces the problem :

Imports Telerik.WinControls.UI

Public Class RadForm1
    Private _Liste As New List(Of MyClass1)

    Public Sub New()

        ' Cet appel est requis par le concepteur.
        InitializeComponent()

        ' Ajoutez une initialisation quelconque après l'appel InitializeComponent().
        _Liste.Add(New MyClass1 With {.Prop1 = 10, .Prop2 = "AAA" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 10, .Prop2 = "BBB" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 10, .Prop2 = "CCC" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 100, .Prop2 = "DDD" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 100, .Prop2 = "FFF" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 1, .Prop2 = "QQQ" & .Prop1})
        _Liste.Add(New MyClass1 With {.Prop1 = 1, .Prop2 = "SSS" & .Prop1})
        RadGridView1.DataSource = _Liste

    End Sub

    Private Sub RadGridView1_RowFormatting(sender As Object, e As RowFormattingEventArgs) Handles RadGridView1.RowFormatting
        If DirectCast(e.RowElement.RowInfo.DataBoundItem, MyClass1).Prop1 = 10 Then
            e.RowElement.Visibility = Telerik.WinControls.ElementVisibility.Collapsed
        Else
            e.RowElement.Visibility = Telerik.WinControls.ElementVisibility.Visible
        End If

    End Sub

    Private Class MyClass1
        Public Property Prop1 As Integer
        Public Property Prop2 As String
    End Class

End Class

Maybe i'm missing something, but when i replace Telerik.WinControls.ElementVisibility.Collapsed by Telerik.WinControls.ElementVisibility.Hidden, i have the expected behavior (except that the rows are not collapsed).

 

Thanks in advance for your answers, and sorry for my aweful english ... I'm french.

 

I'm using Windows 7 64 bits, with 2016.3.1024.40 version of radcontrols, and .Net Framework v4

[Ralitsa]

Hello Jean-Mark,

Thank you for contacting us. 

If I understand correctly, you want to hide few rows, so you can achieve it by setting the RowInfo.IsVisible property to false. Here is the code snippet demonstrating the solution: 

Private Sub RadGridView1_RowFormatting_1(sender As Object, e As Telerik.WinControls.UI.RowFormattingEventArgs) Handles RadGridView1.RowFormatting
    If DirectCast(e.RowElement.RowInfo.DataBoundItem, MyClass1).Prop1 = 10 Then
        e.RowElement.RowInfo.IsVisible = False
    Else
        e.RowElement.RowInfo.IsVisible = True
    End If
End Sub

I hope this will be useful. Let me know if you have additional questions.

Regards,
Ralitsa
Telerik by Progress