C# 如何使用DragAndDrop在屏幕上移动图像

我正在尝试在WPF中为ImageControl实现DragAndDrop。我使用C#codebehind将图像添加到网格中

System.Windows.Controls.Image OldMan = new System.Windows.Controls.Image();
OldMan.Height=30;
OldMan.Width=30;
OldMan.Name="OldMan";
OldMan.Margin=new Thickness(100,100,0,0);
OldMan.HorizontalAlignment=System.Windows.HorizontalAlignment.Left;
OldMan.Stretch = Stretch.Fill;
OldMan.VerticalAlignment = System.Windows.VerticalAlignment.Top;
OldMan.Source= ConvertBitmap(Properties.Resources.Old1);
OldMan.MouseDown += new MouseButtonEventHandler(OldMan_MouseDown);
//PW is the name of my Grid
PW.Children.Add(OldMan);
PW.RegisterName(OldMan.Name, OldMan);

这会将图像添加到网格中，并钩住MouseDown事件

void OldMan_MouseDown(object sender, MouseButtonEventArgs e)
{
    System.Windows.Controls.Image img = (System.Windows.Controls.Image)sender;
    DoDragDrop(....   //this doesn't exist so obviously I am missing something
}

在MouseDown事件中

void OldMan_MouseDown(object sender, MouseButtonEventArgs e)
{
    System.Windows.Controls.Image img = (System.Windows.Controls.Image)sender;
    DoDragDrop(....   //this doesn't exist so obviously I am missing something
}

---

所以我没有DoDragDrop选项，那么我的选项是什么呢？

有一个关于WPF教程的writeup可能很有用：

它的基本原理是，当他们按下鼠标时，您记录起点。当他们移动鼠标时（没有松开鼠标按钮），你移动对象的量与他们移动鼠标的量相同