private void BuildPickerDataSource() { var refEntity = this.Entity.GetEntity(this.RefObject); ControlInfo.FieldAttribute.TextField = refEntity.TextField; var filterDomain = this._TempSchemaData.Get("linkentity_domain", ""); this.ControlInfo.DataSource = new FieldDataSource { Type = DataSourceType.Entity, Entity = this.RefObject, Domain = FilterExpression.BuildFromJson(this.RefObject, filterDomain) }; }