关于在WPF中文本框内容动态变化的问题

Question

其实是一个很弱弱的问题，我希望文本框的内容从0 变到100 是一个渐变的过程， step 为 1 ，可以清楚的看到 1，2， ，100. 当我用for 语句的是否发现并不是这样的效果。  有人可以帮我解答下吗？                    for (int i = 1; i < 100; i++)
                    {
                        tbBalance.Text = (100- i).ToString();
                        tbCredit.Text = (0+ i).ToString();
                      //  System.Threading.Thread.Sleep(100);
                    }或者需要单独开一个线程来显示？WPF 文本框

Answer 1

模拟一个DoEvents
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System;
using System.Security.Permissions;
using System.Windows.Threading;
namespace WpfApplication2
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }        private void button1_Click(object sender, RoutedEventArgs e)
        {
            for (int i = 1; i < 100; i++)
            {
                tbBalance.Text = (100 - i).ToString();
                tbCredit.Text = (0 + i).ToString();
                DispatcherHelper.DoEvents();
                System.Threading.Thread.Sleep(100);
                
            }
 
        }
public class DispatcherHelper
{
    /// <summary>
    /// Simulate Application.DoEvents function of <see cref=" System.Windows.Forms.Application"/> class.
    /// </summary>
    [SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
    public static void DoEvents()
    {
        var frame = new DispatcherFrame();
        Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background,
            new DispatcherOperationCallback(ExitFrames), frame);        try
        {
            Dispatcher.PushFrame(frame);
        }
        catch (InvalidOperationException)
        {
        }
    }    private static object ExitFrames(object frame)
    {
        ((DispatcherFrame)frame).Continue = false;
        return null;
    }
}
    }
}