Entity Framework LookupEditorAttribute [PropertyGrid]

[namespace: Serenity.ComponentModel] - [assembly: Serenity.Core]

This attribute can be used to add a lookup editor for data from an external table.

Attribute definition:

    public class LookupEditorAttribute : LookupEditorBaseAttribute
    {
        public LookupEditorAttribute(string lookupKey);
        //
        // Summary:
        //     If you use this constructor, lookupKey will be determined by [LookupScript] attribute
        //     on specified lookup type. If this is a row type, make sure it has [LookupScript]
        //     attribute on it.
        public LookupEditorAttribute(Type lookupType);
    }

Use:

As sou seen if you use the constructor with lookupType parameter, see also the [LookupScriptAttribute](LookupScriptAttribute [Extensibility]).

This editor gets data from the specified table and makes them available in a dropdown list.

    public sealed class CustomerRow : Row, IIdRow, INameRow
    {
        [...]

        [LookupEditor(typeof(EmployeeRow))]
        public Int32? LastContactedBy
        {
            get { return Fields.LastContactedBy[this]; }
            set { Fields.LastContactedBy[this] = value; }
        }

        [...]

See also:

• LookupScriptAttribute
• LookupIncludeAttribute