System.Reflection.TargetInvocationException在構造

Question

我不斷收到

System.Reflection.TargetInvocationException

和PresentationFramework.dll，其他信息異常已通過調用的目標引發異常。

有人可以幫我在這裏嗎？

信息： 調用堆棧

PresentationFramework.dll System.Windows.Markup.WpfXamlLoader.Load（System.Xaml.XamlReader xamlReader，System.Xaml.IXamlObjectWriterFactory writerFactory，布爾skipJournaledProperties，對象rootObject，系統！ .Xaml.XamlObjectWriterSettings設置的System.Uri基本URI）未知

namespace PMD.Analysis.AnalysisViewModel 
     { 
      using PMD.Measurement.MeasurementModel; 
      using System.Windows.Data; 
      using PMD.Analysis.AnalysisModel; 
      using System; 
      using System.Collections.Generic; 
      using PMD.Measurement.MeasurementViewModel; 
      public class AnalysisViewModel : ViewModel 
      { 

     /// <summary> 
     /// New analysis command. 
     /// </summary> 
     private ICommand newAnalysis = null; 
     public PMD.Analysis.AnalysisViewModel.NewAnalysisViewModel m_NewAnalysisViewModel; 
     Measurement measurement = new Measurement(); 
     private ICollectionView measurements = null; 
     /// <summary> 
     /// Measurement's search by title field. 
     /// </summary> 
     private string searchTitle; 
     /// <summary> 
     /// Measurement's search by title field. 
     /// </summary> 
     private string searchTester; 
     /// <summary> 
     /// Measurement's search by vehicle VIN field. 
     /// </summary> 
     private string searchVehicleVIN; 

     public MeasurementModel MeasurementModel 
     { 
      get; 
      set; 
     } 


     public enum SelectedState 
     { 
      // No Masurements. 
      Inactive, 
      // Masurements. 
      Active, 
      // Waiting for Masurements. 
      WaitingAnswer 
     }; 


     public SelectedState CurrentSelectedState { get; set; } 

     public Analysis Analysis 
     { 
      get; 
      set; 
     } 

     public AnalysisViewModel() 
     { 

      Analysis = new Analysis(); 
      measurements = new ListCollectionView(MeasurementModel.Measurements); 
      measurements.Filter = new Predicate<object>(SearchCallbackAnalysis); 
     } 

     ~AnalysisViewModel() 
     { 

     } 

     /// <summary> 
     /// List of measurements that will be displayed in analysis view. 
     /// </summary> 
     public ICollectionView Measurements 
     { 
      get { return measurements; } 

      set { measurements = value; } 
     } 

     /// <summary> 
     /// Gets or sets new analysis command. 
     /// </summary> 
     public ICommand NewAnalysis 
     { 
      get 
      { 
       if (newAnalysis == null) 
        newAnalysis = new NewAnalysisCommand(this); 
       return newAnalysis; 
      } 
     } 


     public bool SearchCallbackAnalysis(object item) 
     { 
      bool isItemShowed = true; 
      if ((searchTitle != "") && (searchTitle != null)) 
       isItemShowed &= (((Measurement)item).Title == searchTitle); 
      if ((searchVehicleVIN != "") && (searchVehicleVIN != null)) 
       isItemShowed &= (((Measurement)item).Vehicle.VehicleVIN == searchVehicleVIN); 
      if ((SearchTester != "") && (SearchTester != null)) 
       isItemShowed &= (((Measurement)item).Tester == SearchTester); 
      return isItemShowed; 
     } 



     /// <summary> 
     /// Gets or sets measurement's search by title field. 
     /// </summary> 
     public string SearchTitle 
     { 
      get 
      { 
       return searchTitle; 
      } 

      set 
      { 

       searchTitle = value; 
       Measurements.Refresh(); 
      } 
     } 

     /// <summary> 
     /// Gets or sets measurement's search by tester name field. 
     /// </summary> 
     public string SearchTester 
     { 
      get 
      { 
       return searchTester; 
      } 

      set 
      { 

       searchTester = value; 
       Measurements.Refresh(); 
      } 
     } 

     /// <summary> 
     /// Gets or sets measurement's search by vehicle VIN field. 
     /// </summary> 
     public string SearchVehicleVIN 
     { 
      get 
      { 
       return searchVehicleVIN; 
      } 
      set 
      {  
       searchVehicleVIN = value; 
       Measurements.Refresh(); 
      } 
     }  
    }//end AnalysisViewModel 

}//end namespace AnalysisViewModel 

，如果我在構造函數中這行代碼註釋：

measurements.Filter = new Predicate<object>(SearchCallbackAnalysis); 

一切工作正常，但我需要這一行來搜索列表中。

附加信息：

xamlReader Cannot obtain value of local or argument 'xamlReader' as it is not available at this instruction pointer, possibly because it has been optimized away. System.Xaml.XamlReader 

writerFactory Cannot obtain value of local or argument 'writerFactory' as it is not available at this instruction pointer, possibly because it has been optimized away. System.Xaml.IXamlObjectWriterFactory 

skipJournaledProperties Cannot obtain value of local or argument 'skipJournaledProperties' as it is not available at this instruction pointer, possibly because it has been optimized away. bool 

rootObject Cannot obtain value of local or argument 'rootObject' as it is not available at this instruction pointer, possibly because it has been optimized away. object 

settings Cannot obtain value of local or argument 'settings' as it is not available at this instruction pointer, possibly because it has been optimized away. System.Xaml.XamlObjectWriterSettings 

baseUri Cannot obtain value of local or argument 'baseUri' as it is not available at this instruction pointer, possibly because it has been optimized away. System.Uri 

Answer 1

我有嘗試：

public ICollectionView Measurements 
     { 
      get { return measurements; } 

      set { measurements = value; 
measurements.Filter = new Predicate<object>(SearchCallbackAnalysis); 
} 
     } 

現在一切工作正常。謝謝你試圖幫助我。