Drag.xaml <Canvas> <Grid Width="300" Height="60" Background="GreenYellow" MouseMove="Grid_MouseMove" MouseLeftButtonDown="Grid_MouseLeftButtonDown" MouseLeftButtonUp="Grid_MouseLeftButtonUp"> </Grid> </Canvas> Drag.xaml.cs Point currentPoint; bool mouseMoving = false; private void Grid_MouseMove(object sender,MouseEventArgs e) { FrameworkElement element = sender as FrameworkElement; if (mouseMoving) { double cX = e.GetPosition(null).X - currentPoint.X; double cY = e.GetPosition(null).Y - currentPoint.Y; element.SetValue(Canvas.TopProperty,cY + (double)element.GetValue(Canvas.TopProperty)); element.SetValue(Canvas.LeftProperty,cX + (double)element.GetValue(Canvas.LeftProperty)); currentPoint = e.GetPosition(null); } } private void Grid_MouseLeftButtonDown(object sender,MouseButtonEventArgs e) { FrameworkElement element = sender as FrameworkElement; currentPoint = e.GetPosition(null); mouseMoving = true; if (element != null) { element.CaptureMouse(); element.Cursor = Cursors.Hand; } } private void Grid_MouseLeftButtonUp(object sender,MouseButtonEventArgs e) { FrameworkElement element = sender as FrameworkElement; mouseMoving = false; element.CaptureMouse(); currentPoint.X = 0; currentPoint.Y = 0; element.Cursor = null; }
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