c# - 无法解析 TargetName - Silverlight4 C#

Question

我收到错误消息无法解析 TargetName grdGeneral。我想要做的是有一个淡出功能，它接受一个网格并将不透明度淡化为零。我在 MouseLeftButtonDown 上调用了此函数，并在 xaml 和表单加载后加载。

调用淡出:

private void imgNext_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            fadeOut(grdGeneral);            
        }

淡出函数:

private void fadeOut(Grid pGrid)
        {
            Storyboard stb = new Storyboard();

            DoubleAnimation da = new DoubleAnimation();
            da.From = 1.0;
            da.To = 0.0;

            stb.Duration = new Duration(TimeSpan.FromSeconds(.75));
            stb.Children.Add(da);

            Storyboard.SetTargetName(da, pGrid.Name);
            Storyboard.SetTargetProperty(da, new PropertyPath(Grid.OpacityProperty));

            stb.Begin();
        }

我访问过一些教程站点，我的代码似乎遵循相同的顺序。我也上过这个 stackoverflow question在你说重新发布之前。这个问题必须处理 mutlipages 而我只是想开始一个动画。

堆栈跟踪

System.InvalidOperationException was unhandled by user code
  Message=Cannot resolve TargetName grdGeneral.
  StackTrace:
       at MS.Internal.XcpImports.MethodEx(IntPtr ptr, String name, CValue[] cvData)
       at MS.Internal.XcpImports.MethodEx(DependencyObject obj, String name)
       at System.Windows.Media.Animation.Storyboard.Begin()
       at MeterTesting.QuarterReportGUI.fadeOut(Grid pGrid)
       at MeterTesting.QuarterReportGUI.imgNext_MouseLeftButtonDown(Object sender, MouseButtonEventArgs e)
       at MS.Internal.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
       at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)
  InnerException: 

Answer 1

而不是使用

 Storyboard.SetTargetName(da, pGrid.Name);

尝试

 Storyboard.SetTarget(da, pGrid);