元コードがどうかわからないですが、INotifyCollectionChangedやBinding.IndexerNameの通知をしてなかったり。
5MBもバイト単位でバインドはいくらなんでも無茶なので、バインドする範囲を制限するようにした方がいいと思います。
namespace WpfApplication1
{
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.ComponentModel;
using System.Collections.Specialized;
public partial class MainWindow : Window
{
private const int SIZE = 10000;
public MainWindow()
{
InitializeComponent();
this.Loaded += MainWindow_Loaded;
}
private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
array = new byte[SIZE];
dummyArray = new NotifyDummyList<byte>(array, 0, SIZE - 1);
var stack = new StackPanel();
stack.Orientation = Orientation.Vertical;
for (int i = 0; i < SIZE; i++)
{
var bind = new Binding();
bind.Source = dummyArray;
bind.Path = new PropertyPath("["+i+"]");
bind.Mode = BindingMode.OneWay;
var text = new TextBlock();
text.SetBinding(TextBlock.TextProperty, bind);
stack.Children.Add(text);
}
this.StackRoot.Children.Add(stack);
}
private byte[] array;
private NotifyDummyList<byte> dummyArray;
private void Button_Click1(object sender, RoutedEventArgs e)
{
//データを変更
dummyArray[1] = 5;
}
private void Button_Click2(object sender, RoutedEventArgs e)
{
//データを一括変更
dummyArray.Replace(new byte[] { 1, 2 }, 0);
}
private void Button_Click3(object sender, RoutedEventArgs e)
{
//元の配列を変更してから通知
array[1] = 10;
array[3] = 100;
dummyArray.RaiseReplace(1, 3);
}
private void Button_Click4(object sender, RoutedEventArgs e)
{
//開始位置を変更
dummyArray.ChangeIndex(1, SIZE - 2);
}
}
class NotifyDummyList<T> : IList<T>,INotifyCollectionChanged, INotifyPropertyChanged
{
public NotifyDummyList(int count) : this(new T[count],0,count-1)
{
}
public NotifyDummyList(T[] data, int start, int end)
{
this.data = data;
ChangeIndex(start, end);
}
public T[] InnerArray
{
get
{
return data;
}
}
protected T[] data;
protected int start;
protected int end;
protected int count;
protected int ToDataIndex(int index)
{
int indexX = index + start;
if (start <= indexX && indexX <= end)
{
return indexX;
}
else
{
throw new ArgumentOutOfRangeException();
}
}
public T this[int index]
{
get
{
return data[ToDataIndex(index)];
}
set
{
Replace(new T[] { value }, index);
}
}
public void Replace(T[] newValeus, int index)
{
int count = newValeus.Length;
int indexData = ToDataIndex(index);
int indexeEnd = ToDataIndex(index + count);
T[] oldValues = new T[count];
Array.Copy(data, indexData, oldValues, 0, count);
Array.Copy(newValeus, 0, data, indexData, count);
OnPropertyChanged(Binding.IndexerName);
NotifyCollectionChangedEventArgs e
= new NotifyCollectionChangedEventArgs
(NotifyCollectionChangedAction.Replace, newValeus, oldValues, index);
}
public void RaiseReplace(int start, int end)
{
NotifyDummyList<T> dummy = new NotifyDummyList<T>(data, start, end);
OnPropertyChanged(Binding.IndexerName);
NotifyCollectionChangedEventArgs e
= new NotifyCollectionChangedEventArgs
(NotifyCollectionChangedAction.Replace, dummy, dummy, start);
}
public void ChangeIndex(int start, int end)
{
this.start = start;
this.end = end;
this.count = end - start + 1;
if (count < 0)
{
count = 0;
}
NotifyCollectionChangedEventArgs e
=new NotifyCollectionChangedEventArgs
(NotifyCollectionChangedAction.Reset);
OnCollectionChanged(e);
OnPropertyChanged(Binding.IndexerName);
}
#region INotifyCollectionChanged メンバー
public event NotifyCollectionChangedEventHandler CollectionChanged;
protected void OnCollectionChanged(NotifyCollectionChangedEventArgs e)
{
var cc = CollectionChanged;
if (cc != null)
{
cc(this, e);
}
}
#endregion
#region INotifyPropertyChanged メンバー
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
var pc = PropertyChanged;
if (pc != null)
{
pc(this, new PropertyChangedEventArgs(name));
}
}
#endregion
#region IList<T> メンバー
int IList<T>.IndexOf(T item)
{
throw new NotImplementedException();
}
void IList<T>.Insert(int index, T item)
{
throw new NotImplementedException();
}
void IList<T>.RemoveAt(int index)
{
throw new NotImplementedException();
}
#endregion
#region ICollection<T> メンバー
void ICollection<T>.Add(T item)
{
throw new NotImplementedException();
}
void ICollection<T>.Clear()
{
throw new NotImplementedException();
}
bool ICollection<T>.Contains(T item)
{
throw new NotImplementedException();
}
void ICollection<T>.CopyTo(T[] array, int arrayIndex)
{
throw new NotImplementedException();
}
int ICollection<T>.Count
{
get { return count; }
}
bool ICollection<T>.IsReadOnly
{
get { return true; }
}
bool ICollection<T>.Remove(T item)
{
throw new NotImplementedException();
}
#endregion
#region IEnumerable<T> メンバー
public IEnumerator<T> GetEnumerator()
{
for (int i = start; i <= end; i++)
{
yield return data[i];
}
}
#endregion
#region IEnumerable メンバー
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
for (int i = start; i <= end; i++)
{
yield return data[i];
}
}
#endregion
}
}
別スレッドからでも変更できますよ。
#ItemsControlなどにコレクションをバインドするとインデックス同期のために別スレッドから変更できないことはありますが。
個別に明示されていない限りgekkaがフォーラムに投稿したコードにはフォーラム使用条件に基づき「MICROSOFT LIMITED PUBLIC LICENSE」が適用されます。(かなり自由に使ってOK!)
