public static TextBox FindNextTextBox(DependencyObject parent, TextBox textbox)
{
List <TextBox> textBoxList = FramePageUtils.AllTextBoxes(parent);
int num = textBoxList.IndexOf(textbox);
if (num >= 0 && num < textBoxList.Count - 1)
{
return(textBoxList[num + 1]);
}
return(null);
}
public static List <TextBox> AllTextBoxes(DependencyObject parent)
{
List <TextBox> textBoxList = new List <TextBox>();
for (int index = 0; index < VisualTreeHelper.GetChildrenCount(parent); ++index)
{
DependencyObject child = VisualTreeHelper.GetChild(parent, index);
if (child is TextBox)
{
textBoxList.Add(child as TextBox);
}
textBoxList.AddRange((IEnumerable <TextBox>)FramePageUtils.AllTextBoxes(child));
}
return(textBoxList);
}