The entity type List`1 is not part of the model for the current context

Question

I\'ve been using Database First, EF 4.1

I am getting \"The entity type List`1 is not part of the model for the current context.\" error when trying to update a recor

Answer 1

Thanks, Leniency, for the answer. Worked great.

For what it's worth, I prefer to keep my EntityState.Modified assignments on a single line (as I have multiples) so used the following LINQ:

properties.ForEach(p => db.Entry(p).State = EntityState.Modified);

Answer 2

i think you can use this code for this problem. Because if you use it, you will met another problem. Now i fixed my problem and i hope it will work for you

foreach (var item in properties)
{
  var oldEntity = FGetById(item.Id); // You can use find instead of FGetById
  context.Entry(oldEntity).CurrentValues.SetValues(item);
  Update(oldEntity);
}

Answer 3

Try changing your loop to:

foreach (var item in properties)
{
     db.Entry(item).State = EntityState.Modified;
}

You were calling db.Entry(properties), so you were trying to attach the whole collection at once. DbContext.Entry(object) expects a single object, not a collection.

Answer 4

I ended up here despite using code-first EF. The answer to the problem for me was simply not to try to pass a list of entities to the insert method, but insert them one at a time instead:

entityList.ForEach(context.Insert);