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What event fires on multiselect ?

4 Answers 154 Views

ListControl

This is a migrated thread and some comments may be shown as answers.

4 Answers, 1 is accepted

answered on 16 Mar 2011, 05:42 PM

The only icky way I have been able to overcome this issue would be to catch the KeyUp/MouseUp events on the box to check for selection change.

Is there a better way than this? I am having the same issue as Art, where the event will not fire for Shift+Click selections with MultiExtended enabled.

Private Sub lstIncludedFields_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles lstIncludedFields.KeyUp

'Do Code here for selection changed

End

Sub

This becomes very slow however with large lists.

Accepted

answered on 16 Mar 2011, 06:05 PM

Hello Art,

Something like this is what you need I think. Please let me know if that helps, or if you need more information

private void Form1_Load(object sender, EventArgs e)

{

foreach (RadListDataItem item in this.radListControl1.Items)

{

item.RadPropertyChanged += new Telerik.WinControls.RadPropertyChangedEventHandler(item_RadPropertyChanged);

}

void item_RadPropertyChanged(object sender, Telerik.WinControls.RadPropertyChangedEventArgs e)

{

if (e.Property.Name == "Selected")

{

RadListDataItem item = (RadListDataItem)sender;

MessageBox.Show(item.Text + " selected = " + item.Selected.ToString());

}

Regards,
Richard

Accepted

answered on 16 Mar 2011, 10:00 PM

Hello Art,

here is the code in VB. Do let me know if that helps, or indeed if you have any difficulties.

Private Sub Form1_Load(sender As Object, e As EventArgs) handles Form1.Load

For Each item As RadListDataItem In Me.radListControl1.Items

AddHandler item.RadPropertyChanged, AddressOf item_RadPropertyChanged

Next

End Sub

Private Sub item_RadPropertyChanged(sender As Object, e As Telerik.WinControls.RadPropertyChangedEventArgs)

If e.Property.Name = "Selected" Then

Dim item As RadListDataItem = DirectCast(sender, RadListDataItem)

MessageBox.Show(item.Text & " selected = " & item.Selected.ToString())

End If

End Sub

All the best
Richard