Update an entity using entity framework while ignoring some properties

Question

I am working with asp.net mvc 4. I have to update my persistence store using an edit method, but I want to ignore some columns.

I had found some answers here, but t

Answer 1

You are in same position has me. I have similar things to do.

You have to options:

You can use NotMapped (in case you don't want to store any value ).

However I think you want this:

if it is readonly, and you don't want to modify then you can do something similar:

var attachedEntity = this.context.Entry(orignalEntity);
                    attachedEntity.CurrentValues.SetValues(updatedEntity);

    List excludeProperties = new List();

                        // Some of these fields you cannot just modify at all.
                        excludeProperties.Add("UniqueIdentifier");
                        excludeProperties.Add("AuthorID");
                        excludeProperties.Add("DateCreated");
                        // You could even ask your dervived calls to tell which one to exclude 
// excludeProperties.AddRange(this.ExcludeUpdateProperties());

                        foreach (var name in excludeProperties)
                        {
                            var property = attachedEntity.Property(name);
                            if (property != null)
                            {
                                attachedEntity.Property(name).IsModified = false;
                            }
                        }

with this approach, rather than updating those fields that needs to be updated you can use attachedEntity.CurrentValues.SetValues(updatedEntity) which will set all value as new value, and then you can exclude that you want to. This approach is nicer than updating each field one by one.