I have a radlistview setup for viewtype=DetailsView. The HOME/END keys work, but the Page up/down only move the scroll area, not the selected item.
You will notice when running the below code, page up/down will always keep the selected item as FIELD 0 (the top one), but END moves the select to the last entry, and HOME moves the select to the first entry.
How can i get the page up/down to move the selected item. I am probably just missing something really simple that i can't seem to find.
ListViewDetailColumn1.HeaderText = "Column 0"
ListViewDetailColumn1.Width = 100.0!
ListViewDetailColumn2.HeaderText = "Column 1"
ListViewDetailColumn2.Width = 100.0!
Me.RadListView1.Columns.AddRange(New Telerik.WinControls.UI.ListViewDetailColumn() {ListViewDetailColumn1, ListViewDetailColumn2})
Me.RadListView1.ItemSpacing = -1
Me.RadListView1.KeyboardSearchEnabled = True
Me.RadListView1.Location = New System.Drawing.Point(200, 72)
Me.RadListView1.Name = "RadListView1"
Me.RadListView1.Size = New System.Drawing.Size(296, 208)
Me.RadListView1.TabIndex = 2
Me.RadListView1.ViewType = Telerik.WinControls.UI.ListViewType.DetailsView
MsgBox("DoubleClick" & vbCrLf & RadListView1.SelectedItem(0).ToString)
End Sub
Private Sub RadListView1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles RadListView1.KeyPress
If e.KeyChar = ChrW(13) Then
MsgBox("KeyPress" & vbCrLf & RadListView1.SelectedItem(0).ToString)
End If
End Sub
Private Sub LoadList()
Dim lItem As Telerik.WinControls.UI.ListViewDataItem
Dim cnt As Integer
Dim selected As Boolean = False
For cnt = 0 To 100 Step 1
lItem = New Telerik.WinControls.UI.ListViewDataItem
lItem.SubItems.Add(CStr(cnt))
lItem.SubItems.Add("FIELD " & CStr(cnt))
RadListView1.Items.Add(lItem)
If Not selected Then
RadListView1.SelectLastAddedItem = False
selected = True
End If
Next
End Sub
1 Answer, 1 is accepted
Usually, pressing the PageDown/PageUp keys are expected to move the scrollbar. If you want to move the selected item, feel free to use the up/down arrow keys.
However, I have prepared a sample custom implementation of RadListView that handles the PageDown/PageUp in a similar way like the Up/Down arrows:
Public Class CustomListView
Inherits RadListView
Protected Overrides Function CreateListViewElement() As RadListViewElement
Return New CustomListViewElement()
End Function
Public Overrides Property ThemeClassName As String
Get
Return GetType(RadListViewElement).FullName
End Get
Set(value As String)
MyBase.ThemeClassName = value
End Set
End Property
End Class
Public Class CustomListViewElement
Inherits RadListViewElement
Public Overrides Function ProcessKeyDown(e As KeyEventArgs) As Boolean
If e.KeyData = Keys.PageDown Then
Return MyBase.ProcessKeyDown(New KeyEventArgs(Keys.Down))
ElseIf e.KeyData = Keys.PageUp Then
Return MyBase.ProcessKeyDown(New KeyEventArgs(Keys.Up))
End If
Return MyBase.ProcessKeyDown(e)
End Function
Protected Overrides ReadOnly Property ThemeEffectiveType() As Type
Get
Return GetType(RadListViewElement)
End Get
End Property
End ClassI hope this information helps. If you need any further assistance please don't hesitate to contact me.
Regards,
Dess | Tech Support Engineer, Principal
Progress Telerik
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Iron
Iron
By default, the PageDown/PageUp keys move only the vertical scrollbar without managing the SelectedItem at all. If you need to manage the SelectedItem as well, the previously suggested code snippet demonstrates how to move the SelectedItem with delta=1. In case you need to move with 10 items at once, you can adjust the code as follows:
Public Overrides Function ProcessKeyDown(e As KeyEventArgs) As Boolean
If e.KeyData = Keys.PageDown Then
For index = 1 To 10
MyBase.ProcessKeyDown(New KeyEventArgs(Keys.Down))
Next
Return True
ElseIf e.KeyData = Keys.PageUp Then
For index = 1 To 10
MyBase.ProcessKeyDown(New KeyEventArgs(Keys.Up))
Next
Return True
End If
Return MyBase.ProcessKeyDown(e)
End Function
Protected Overrides ReadOnly Property ThemeEffectiveType() As Type
Get
Return GetType(RadListViewElement)
End Get
End Property
End Class
Rank 1
Iron
Iron
Hi, Darin,
I would say that the appropriate control for your scenario is RadGridView, not RadListView. The PageUp/PageDown keys move the current row up/down with a step controlled by the visible grid area. Otherwise, feel free to use the above suggested solution for RadListView.
Rank 1
Iron
Iron