Windows phone開発のページング方法

ページング方法:

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;
using System.Collections.Generic;

namespace MicroBlogForWP7.Classes
{
    public class UtilPager
    {
        #region   

        /// <summary>
        ///  
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public void verticalScrollBar_ValueChanged(object sender, RoutedEventArgs e)
        {
            ScrollBar scrollBar = (ScrollBar)sender;
            object valueObj = scrollBar.GetValue(ScrollBar.ValueProperty);
            object maxObj = scrollBar.GetValue(ScrollBar.MaximumProperty);
            if (valueObj != null && maxObj != null)
            {
                double value = (double)valueObj;
                double max = (double)maxObj - 1.0;
                if (value >= max)
                {
                    //  
                    //GetPublicMicroBlog();
                }
            }
        }


        public static List<T> GetVisualChildCollection<T>(object parent) where T : UIElement
        {
            List<T> visualCollection = new List<T>();
            GetVisualChildCollection(parent as DependencyObject, visualCollection);
            return visualCollection;
        }


        public static void GetVisualChildCollection<T>(DependencyObject parent, List<T> visualCollection) where T : UIElement
        {
            int count = VisualTreeHelper.GetChildrenCount(parent);
            for (int i = 0; i < count; i++)
            {
                DependencyObject child = VisualTreeHelper.GetChild(parent, i);
                if (child is T)
                {
                    visualCollection.Add(child as T);
                }
                else if (child != null)
                {
                    GetVisualChildCollection(child, visualCollection);
                }
            }
        }
        #endregion

        /// <summary>
        /// 
        /// </summary>
        /// <typeparam name="T"> </typeparam>
        /// <param name="root"> </param>
        /// <returns></returns>
        public static T FindChildOfType<T>(DependencyObject root) where T : class
        {
            var queue = new Queue<DependencyObject>();
            queue.Enqueue(root);

            while (queue.Count > 0)
            {
                DependencyObject current = queue.Dequeue();
                for (int i = VisualTreeHelper.GetChildrenCount(current) - 1; 0 <= i; i--)
                {
                    var child = VisualTreeHelper.GetChild(current, i);
                    var typedChild = child as T;
                    if (typedChild != null)
                    {
                        return typedChild;
                    }
                    queue.Enqueue(child);
                }
            }
            return null;
        }

        /// <summary>
        ///  
        /// </summary>
        public static bool HightDragSensitivity
        {
            get
            {
                return false;
            }
        }
    }
}

呼び出し:

 List<ScrollBar> scrollBarList = GetVisualChildCollection<ScrollBar>(listBox1);

            foreach (ScrollBar scrollBar in scrollBarList)
            {
                if (scrollBar.Orientation == System.Windows.Controls.Orientation.Horizontal)
                {

                }
                else
                {
                    scrollBar.ValueChanged += new RoutedPropertyChangedEventHandler<double>(verticalScrollBar_ValueChanged);
                }
            }