public void UpdateView()
{
if (this.template == null)
{
return;
}
this.panel.DisposeChildren();
foreach (GridViewColumn column in (IEnumerable <GridViewColumn>) this.Columns)
{
ColumnChooserItemElementCreatingEventArgs e = new ColumnChooserItemElementCreatingEventArgs(new ColumnChooserItem(column, (IRadServiceProvider)this.gridViewElement), column, this.GridViewElement);
this.OnItemElementCreating((object)this, e);
if (e.ItemElement == null)
{
e.ItemElement = new ColumnChooserItem(column, (IRadServiceProvider)this.gridViewElement);
}
if (this.PassesFilter(e.ItemElement, this.FilterTextBox.Text))
{
this.panel.Children.Add((RadElement)e.ItemElement);
}
}
if (this.panel.Children.Count == 0)
{
this.TextAlignment = ContentAlignment.MiddleCenter;
this.scrollViewer.Visibility = ElementVisibility.Collapsed;
}
else
{
this.scrollViewer.Visibility = ElementVisibility.Visible;
}
}
protected virtual void OnItemElementCreating(
object sender,
ColumnChooserItemElementCreatingEventArgs e)
{
if (this.ItemElementCreating == null)
{
return;
}
this.ItemElementCreating((object)this, e);
}
private void ColumnChooserControl_ItemElementCreating(
object sender,
ColumnChooserItemElementCreatingEventArgs e)
{
this.GridRootElement.Template.MasterTemplate.EventDispatcher.RaiseEvent <ColumnChooserItemElementCreatingEventArgs>(EventDispatcher.ColumnChooserItemElementCreating, sender, e);
}