提交操作验证失败

本文关键字：失败 验证 操作 提交 | 更新日期: 2023-09-27 18:12:36

我正在使用MVVM概念和实体框架的银光应用程序，并且在更新值时遇到一些麻烦。让我详细说明我的问题。我有三个表，A B和C，其中B和A有外键关系，C和B有外键关系，我可以毫无问题地保存这些表。我使用视图来绑定网格，并能够检索值进行编辑，但无法更新对数据库的任何更改。当更新我得到这个错误**

消息:Silverlight Application Code: 4004中的未处理错误
分类:ManagedRuntimeError信息:System.ServiceModel.DomainServices.Client.DomainOperationException:提交操作验证失败。请检查实体。EntitiesInError中每个实体的ValidationErrors信息。在System.ServiceModel.DomainServices.Client.OperationBase.Complete(异常错误)在System.ServiceModel.DomainServices.Client.SubmitOperation.Complete (OperationErrorStatuserrorStatus)在, System.ServiceModel.DomainServices.Client.DomainContext。你们的在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，addresscollection是c的集合。

这个错误的原因是什么?

提交操作验证失败

错误提示这是验证问题。change dcBusinessAccountingContext.SubmitChanges(); to

dcBusinessAccountingContext.SubmitChanges(SubmitCallback, null);

然后你可以做一些错误检查:

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