Problems with UpdateModel() - 1 table works, another doesn't

Hi, Using LS 4.0 in a MVC 3 app with the LightSpeedEntityModelBinder registered in Global.asax.cs

I have one table/entity, "Sundays" which gets updated correctly with the following code

var id = int.Parse(collection["Id");
var sday = UnitOfWork.Sundays.Single(m => m.Id == id);
UpdateModel(sday);

With this entity, Events the following code throws the error: "The model of type 'Bcsl.Models.Event' could not be updated." with this code:

var id = int.Parse(collection["Id"]);
var ev = UnitOfWork.Events.Single(m => m.Id == id);
UpdateModel(ev); <-- this is where it breaks

I have checked both entitys in the Model diagram, and with the exception of the table and entity names their properties are identical. I've set Identity Column Name to Id and IdentityMethod to IdentityColumn in both

Am I missing something else to check? Thanks James

Hi James,

This error is normally thrown by MVC when the form fields dont match the expected values for unbinding. If you use TryUpdateModel() instead of UpdateModel() does any data get updated?

Jeremy

Hi Jeremy,

Ok, the TryUpdateModel() method works and updates the record. How can I find out what fields aren't correctly mapped?

Thanks James

Check the ModelState for errors (this should be getting populated the same as with UpdateModel but without the added exception being thrown). The return value of TryUpdateModel is your indicator if everything worked.

Jeremy