/// <summary>
/// Handles text changed event of textbox
/// </summary>
private void textBox_TextChanged(object sender, TextChangedEventArgs e)
{
//see if we have a data source
if (suggestionSource == null || suppressTextChange)
{
//unmark the text chnage flag
suppressTextChange = false;
//if not the exit method
return;
}
//verify if we have something in textbox
if (sourceTextBox.Text.Trim().Length > 0)
{
//request to show popup
ShowPopup();
//see if we have provider
if (suggestionProvider != null)
{
//invoke query changed
suggestionProvider.QueryChanged(suggestionSource, sourceTextBox.Text.Trim());
}
//check if we have some item in list
if (suggestionListBox.Items.Count < 1)
{
//if not then close the popup
suggestionPopup.IsOpen = false;
}
}
else
{
//otherwise close popup
suggestionPopup.IsOpen = false;
}
}
