异常 - 元素'System.Windows.Controls.Grid'的布局测量覆盖不应返回NaN值作为其DesiredSize

时间:2015-09-09 10:07:36

标签: c# wpf layout uielement measure

我得到一个例外,

  

元素'System.Windows.Controls.Grid'的布局测量覆盖   不应该将NaN值作为DesiredSize返回。

StackTrace:

  

在System.Windows.UIElement.Measure(Size availableSize)at   System.Windows.Controls.Canvas.MeasureOverride(大小约束)at   System.Windows.FrameworkElement.MeasureCore(Size availableSize)at   System.Windows.UIElement.Measure(Size availableSize)at   System.Windows.Controls.Control.MeasureOverride(大小约束)at   System.Windows.FrameworkElement.MeasureCore(Size availableSize)at   System.Windows.UIElement.Measure(Size availableSize)at   System.Windows.UIElement.Arrange(Rect finalRect)at   System.Windows.Controls.Canvas.ArrangeOverride(Size arrangeSize)at   System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)at   System.Windows.UIElement.Arrange(Rect finalRect)at   System.Windows.ContextLayoutManager.UpdateLayout()at   System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
  在System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
  在System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object   resizedCompositionTarget)at   System.Windows.Media.MediaContext.RenderMessageHandler(对象   resizedCompositionTarget)at   System.Windows.Threading.ExceptionWrapper.InternalRealCall(代表   回调,对象args,Int32 numArgs)at   System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source,   委托回调,Object args,Int32 numArgs,Delegate catchHandler)

如何解决这个问题?请帮帮我......

0 个答案:

没有答案