[Solved] adding code to the set property method when using entity diagrams

[Myth]

When using the object scope provider, the only part of a class that was generated by the wizard were the variables. This allowed you write/customize a property's "set" method. For example to make sure an integer value isn't below 0 or to implement the Inotifypropertychanged event. However, how would one do this when using the new Entity diagram style? As now both the variables and the properties are auto generated.

Best regards,
Stijn

[Alexander]

Hello Myth,

You can create a second partial class and add another property which contains your custom logic. For example, if you want to add some logic to the CategoryID property of the Product class, you can do the following:

public partial class Product

{

    public int? CategoryId


    {

        set

        {

            if (!value.HasValue || value > 0)

            {

                this.categoryID = value;

            }

        }

    }

}

The disadvantage is that you cannot use the same name as the one of the autogenerated property.

Maybe in this case it would be better to implement the INotifyPropertyChanging(ed) interfaces. You can see how this can be accomplished via code generation in this article. Hope that helps.

Kind regards,
Alexander
the Telerik team