/// <summary>
/// Change text.
/// </summary>
/// <param name="type">The type of text change that will occur.</param>
/// <param name="text">The new value of the text.</param>
/// <returns>A value indicating if the event was handled.</returns>
private bool textChange(
TextChangedType type,
string text)
{
// Raise the PreviewTextChanged event
PreviewTextChangedEventArgs e = new PreviewTextChangedEventArgs(
PreviewTextChangedEvent, type, text);
OnPreviewTextChanged(e);
// Return a value indicating if the event was handled
return(e.Handled);
}
private void textBox_PreviewTextChanged(object sender, PreviewTextChangedEventArgs e)
{
selectedIndex = defaultIndex;
var records = new List <object>();
var filterTextBox = e.Text;
autoComplete.SelectedItem = null;
autoComplete.SelectedValue = null;
if (!string.IsNullOrEmpty(filterTextBox.Trim()) && !string.IsNullOrEmpty(FilterColumn))
{
var filterItems = autoComplete.ItemsSource.Cast <object>();
filterItems = filterItems.Where(x => GetValueFromObject(x, FilterColumn) != null && GetValueFromObject(x, FilterColumn).ToString().ToLower().StartsWith(filterTextBox.ToLower()));
records = filterItems.ToList();
}
Popup.IsOpen = string.IsNullOrEmpty(filterTextBox) || records.Count > 0 ? true : false;
BindItemsSourceToListBox(records, string.IsNullOrEmpty(filterTextBox));
lastSelectedText = filterTextBox;
}
/// <summary>
/// Raise a PreviewTextChanged event.
/// </summary>
/// <param name="e">The event arguments.</param>
protected virtual void OnPreviewTextChanged(
PreviewTextChangedEventArgs e)
{
RaiseEvent(e);
}
