using System;
using System.Collections.Generic;
using System.Linq;
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;
using System.Windows.Browser;
using System.Net;
using System.Windows.Threading;
using System.Xml.Linq;
namespace SilverlightEnterCreditList
{
public partial class slXml : UserControl
{
Point mousePoint;
bool trackingMouseMove = false;
FrameworkElement _element = null;
public slXml()
{
InitializeComponent();
this.Loaded += slXml_Loaded;
}
void slXml_Loaded(object sender, RoutedEventArgs e)
{
xDocTest();
}
void xDocTest()
{
XElement root = XElement.Load("data.xml");
var q = from p in root.Elements("ENT_EMPLOYEE")
where p.Element("FPImage")!= null && p.Element("FPImage").Value!=string.Empty
select p;
int left = 180;
int mx = 150;
foreach (XElement xe in q)
{
Byte[] bytes = System.Convert.FromBase64String(xe.Element("FPImage").Value);
System.IO.Stream stream = new System.IO.MemoryStream(bytes);
System.Windows.Media.Imaging.BitmapImage map = new System.Windows.Media.Imaging.BitmapImage();
map.SetSource(stream);
Image img = new Image();
img.Width = 100;
img.Height = 100;
img.Source = map;
LayoutRoot.Children.Add(img);
img.SetValue(Canvas.LeftProperty, left);
img.SetValue(Canvas.TopProperty, 200);
EllipseGeometry ellipes = new EllipseGeometry();
ellipes.RadiusX = 60;
ellipes.RadiusY = 60;
ellipes.Center = new Point(60, 60);
img.Clip = ellipes;
left = left + mx;
img.MouseLeftButtonDown += img_MouseLeftButtonDown;
img.MouseMove += img_MouseMove;
img.MouseLeftButtonUp += new MouseButtonEventHandler(img_MouseLeftButtonUp);
}
}
void img_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
FrameworkElement element = sender as FrameworkElement;
trackingMouseMove = false;
element.ReleaseMouseCapture();
mousePoint.X = mousePoint.Y = 0;
element.Cursor = null;
_element = element;
element.SetValue(Canvas.ZIndexProperty, 0);
}
void img_MouseMove(object sender, MouseEventArgs e)
{
Image img = sender as Image;
if (trackingMouseMove)
{
double deltaV = e.GetPosition(null).Y - mousePoint.Y;
double deltaH = e.GetPosition(null).X - mousePoint.X;
double newTop = deltaV + (double)img.GetValue(Canvas.TopProperty);
double newLeft = deltaH + (double)img.GetValue(Canvas.LeftProperty);
img.SetValue(Canvas.TopProperty, newTop);
img.SetValue(Canvas.LeftProperty, newLeft);
//img.SetValue(Canvas.TopProperty, e.GetPosition(null).Y+mousePoint.Y);
//img.SetValue(Canvas.LeftProperty, e.GetPosition(null).X + mousePoint.X);
mousePoint = e.GetPosition(null);
}
}
void img_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
mousePoint = e.GetPosition(null);
Image img = sender as Image;
trackingMouseMove = true;
if (img != null)
{
img.CaptureMouse();
img.Cursor = Cursors.Hand;
img.SetValue(Canvas.ZIndexProperty, 1);
//if(_element!=null)
//_element.SetValue(Canvas.ZIndexProperty, 1);
}
}
}
}
Xaml文件：
<UserControl x:Class="SilverlightEnterCreditList.slXml"
xmlns="http://schemas.microsoft.com/client/2007"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Canvas x:Name="LayoutRoot" Background="Blue" >
</Canvas>
</UserControl>
