Mouse down, up and moved events
<UserControl x:Class='SilverlightApplication3.MainPage'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:d='http://schemas.microsoft.com/expression/blend/2008'
xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'
mc:Ignorable='d'
d:DesignWidth='640'
d:DesignHeight='480'>
<Grid x:Name="LayoutRoot" Background="White">
<Canvas Width="400" Height="300" Background="Wheat">
<Ellipse Canvas.Top="0" Fill="Black" Width="20" Height="20" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" MouseLeftButtonUp="Ellipse_MouseLeftButtonUp" MouseMove="Ellipse_MouseMove" />
<Ellipse Canvas.Top="40" Fill="Black" Width="20" Height="20" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" MouseLeftButtonUp="Ellipse_MouseLeftButtonUp" MouseMove="Ellipse_MouseMove" />
<Ellipse Canvas.Top="80" Fill="Black" Width="20" Height="20" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" MouseLeftButtonUp="Ellipse_MouseLeftButtonUp" MouseMove="Ellipse_MouseMove" />
<Ellipse Canvas.Top="120" Fill="Black" Width="20" Height="20" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" MouseLeftButtonUp="Ellipse_MouseLeftButtonUp" MouseMove="Ellipse_MouseMove" />
</Canvas>
</Grid>
</UserControl>
//File: Page.xaml.cs
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;
namespace SilverlightApplication3
{
public partial class MainPage : UserControl
{
double beginX = 0;
double beginY = 0;
bool isMouseDown = false;
public MainPage()
{
InitializeComponent();
}
private void Ellipse_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Ellipse b = sender as Ellipse;
beginX = e.GetPosition(this).X;
beginY = e.GetPosition(this).Y;
isMouseDown = true;
b.CaptureMouse();
}
private void Ellipse_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
Ellipse b = sender as Ellipse;
isMouseDown = false;
b.ReleaseMouseCapture();
}
private void Ellipse_MouseMove(object sender, MouseEventArgs e)
{
if (isMouseDown)
{
Ellipse b = sender as Ellipse;
double currX = e.GetPosition(this).X;
double currY = e.GetPosition(this).Y;
b.SetValue(Canvas.LeftProperty, currX);
b.SetValue(Canvas.TopProperty, currY);
}
}
}
}
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