Equation Calculator with Graphing

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Media;
using System.Windows.Controls;

namespace CommonUtils
{
	public class VisualTreeUtils
	{
		public static T FindVisualChildByName<T>(DependencyObject parent, string name) where T : DependencyObject
		{
			string controlName = parent.GetValue(Control.NameProperty) as string;
			if (controlName == name)
				return parent as T;

			for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
			{
				DependencyObject child = VisualTreeHelper.GetChild(parent, i);
				T result = FindVisualChildByName<T>(child, name);
				if (result != null)
					return result;
			}
			return null;
		}
	}
	public class LogicalTreeUtils
	{
		public static T FindLogicalChildByName<T>(DependencyObject parent, string name) where T : DependencyObject
		{
			string controlName = parent.GetValue(Control.NameProperty) as string;
			if (controlName == name)
				return parent as T;

			foreach (object obj in LogicalTreeHelper.GetChildren(parent))
			{
				if (obj is DependencyObject)
				{
					T result = FindLogicalChildByName<T>(obj as DependencyObject, name);
					if (result != null)
						return result;
				}
			}
			return null;
		}
	}
}