Submit Operation Failed on Validation in Silverlight 4

Question

Hi,

   I am working with silver light application with MVVM Concept using Entity framework and having some trouble in updating the values. Let me elaborate my problem. I am having three tables say A, B, and C where B has the foreign key relationship with A and C has foreign key relationship with B. I could able to save these tables with out any problem. I am using a view to bind the grid and able to retrieve values for editing but unable to update any changes to the data base.

While Update I am getting this error **

> Message: Unhandled Error in Silverlight Application  Code: 4004   
> Category: ManagedRuntimeError      Message:
> System.ServiceModel.DomainServices.Client.DomainOperationException:
> Submit operation failed validation. Please inspect
> Entity.ValidationErrors for each entity in EntitiesInError for more
> information.    en
> System.ServiceModel.DomainServices.Client.OperationBase.Complete(Exception
> error)    en
> System.ServiceModel.DomainServices.Client.SubmitOperation.Complete(OperationErrorStatus
> errorStatus)    en
> System.ServiceModel.DomainServices.Client.DomainContext.<>c__DisplayClassb.<SubmitChanges>b__3(Object
> )

Below is the Save method used:

 

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();

 

where _currentcustomer is the A's entity Object, CVEReference is the B's entity object, AddrView is the entityset of the Table View and addresscollection is the collection of C. I don't know where I am going wrong. Kindly guide me through this issue.

Thank you.