public void autoCompleteDropDown_WordSelected(object sender, WordSelectedEventArgs e)
{
var index = GetIndexOfSpaceBackwards(SelectionStart - 1);
SelectionLength = 0;
Text = Text.Remove(index, SelectionStart - index);
Text = Text.Insert(index, e.SelectedWord);
SelectionStart = index + e.SelectedWord.Length;
}
private void autoCompleteDropDown_WordReplaced(object sender, WordSelectedEventArgs e)
{
ReplacePreviousWordWith(e.SelectedWord);
}