Views does not have a primary key then it generates the error:
Error: The number of primary key values passed must match number of primary key values defined on the entity.
How could you do to avoid this error?
public ActionResult AtualizaCliente(int id)
{
sistema_mobileEntities dao = new sistema_mobileEntities();
return View(dao.vcliente.Find(id));
}
It's totally wrong to work in ASP.NET MVC and Entity Framework without using primary keys. Using Entity Framework assumes the use of primary keys in all entities. It is a design feature of the Framework that simply can not be fooled.
In the question below the OS the answers are consensual . Therefore, set a primary key to be able to use Find .
Let's take the supposed class used by the question, called Cliente :
public class Cliente
{
[Key]
public int ClienteId { get; set; }
...
}
Consider the above ellipsis as the other fields that are part of your Model .
The way it is, it's already right. Your Model already has a primary key (I wrote it as[Key] ) and Find already works.