https://learn.microsoft.com/ja-jp/dotnet/api/system.windows.data.prioritybindingexpression.bindingexpressions?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
PriorityBindingExpression.BindingExpressions Property (System.Windows.Data) | Microsoft Learn
Gets the collection of BindingExpression objects inside this instance of PriorityBindingExpression.
property systemwindowsdatamicrosoftlearn