上接稳扎稳打Silverlight(5) - 2.0控件之ListBox, MediaElement, MultiScaleImage, PasswordBox

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Net; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Animation; 
using System.Windows.Shapes; 
 
namespace Silverlight20.Control 
{ 
         public partial  class ProgressBar : UserControl 
        { 
                Storyboard _loop =  new Storyboard(); 
                 int _count = 0; 
 
                 public ProgressBar() 
                { 
                        InitializeComponent(); 
 
                        ProgressBarDemo(); 
                } 
 
                 void ProgressBarDemo() 
                { 
                        _loop.Duration = TimeSpan.FromMilliseconds(100d); 
                        _loop.Completed +=  new EventHandler(_loop_Completed); 
                        _loop.Begin(); 
                } 
 
                 void _loop_Completed( object sender, EventArgs e) 
                { 
                        progressBar.Value = _count; 
                        lblPercent.Text = _count.ToString() +  "%"; 
 
                         if (_count > 100) 
                                _count = 0; 
                         else 
                                _count++; 
 
                        _loop.Begin(); 
                } 
        } 
}