提交操作失败验证

我正在与Silverlight应用程序一起使用MVVM Concept和Enity框架，并在更新值时遇到了一些麻烦。让我详细说明我的问题。我有三个表，表示A，B和C，其中B与A具有外键关系，C具有与B的外键关系。我可以将这些表保存为无任何问题。我正在使用视图来绑定网格，并能够检索要编辑的值，但无法更新对数据库的任何更改。虽然更新正在此错误**提交操作失败验证

消息：未处理的错误在Silverlight应用程序代码：4004
类别：ManagedRuntimeError消息： System.ServiceModel.DomainServices.Client.DomainOperationException：提交操作失败验证。请检查 Entities.ValidationErrors EntitiesInError中的每个实体以获取更多信息。烯 System.ServiceModel.DomainServices.Client.OperationBase.Complete（例外误差）烯 System.ServiceModel.DomainServices.Client.SubmitOperation.Complete（OperationErrorStatus 的ErrorStatus）烯 System.ServiceModel.DomainServices.Client.DomainContext。 <> C_ DisplayClassb.b _3（对象）

这里是视图模型类..

public void Save(object obj) 
    { 
      _currentCustomer.ModifiedBy = App.CurrentUser; 
      _currentCustomer.ModifiedDateTime = System.DateTime.Now; 

      foreach (BizFramework.Web.Model.Address address in AddressCollection.ToList()) 
      { 
       string address1 = Convert.ToString(address.Address1); 
       if (address1 != null && address1.Trim()!="") 
       {       
        CVEReference = (from addref in _currentCustomer.CustomerVendorEmployeeReferences 
            where addref.CustomerID == _currentCustomer.CustomerID 
            select addref).SingleOrDefault(); 

        BizFramework.Web.Model.Address addressExists = (from rec in CVEReference.Addresses 
                    where rec.AddressTypeID == address.AddressTypeID 
                    select rec).SingleOrDefault(); 
        if (addressExists != null) 
        { 
         address.ModifiedBy = App.CurrentUser; 
         address.ModifiedDateTime = System.DateTime.Now; 
        } 
        else 
        { 
         address.AddressGuid = System.Guid.NewGuid(); 
         address.ApplicationOwner = App.CurrentUser; 
         address.CreatedBy = App.CurrentUser; 
         address.ModifiedBy = App.CurrentUser; 
         address.CreatedDateTime = System.DateTime.Now; 
         address.ModifiedDateTime = System.DateTime.Now; 

         CVEReference.Addresses.Add(address); 
        } 

       } 
       else 
       { 
        //_currentCustomer.Addresses.Remove(address); 
        AddressCollection.Remove(address); 
        //dcBusinessAccountingContext.Addresses.Remove(address); 
       } 
      }       

     dcBusinessAccountingContext.SubmitChanges(); 
    } 

//Setting Table A from the view like this 

_currentCustomer = (from CustomerAddress in dcBusinessAccountingContext.Customers 
            where CustomerAddress.CustomerID == AddrView.CustomerID 
            select CustomerAddress).SingleOrDefault();

其中_currentcustomer是A的实体对象，CVEReference是B的实体对象AddrView是Table View的实体集，而addresscollection是C的集合。我不知道哪里出错或可能是此错误的原因。请通过这个问题指导我。谢谢。

来源

2011-10-28 Mercy

您是否阅读过错误信息？ ***请检查EntitiesInError中每个实体的Entity.ValidationErrors以获取更多信息。*** – Will

错误表示这是验证问题。改变dcBusinessAccountingContext.SubmitChanges();到

dcBusinessAccountingContext.SubmitChanges(SubmitCallback, null);

然后你就可以做一些错误检查：

private void SubmitCallback(SubmitOperation operation) 
{ 
     if (operation.HasError) 
     { 
      //check "operation.EntitiesInError" for more details. 
     } 
}

希望这会帮助你。

来源

2011-10-28 15:59:56 Damith

提交操作失败验证

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