ClassExpression

A helper class for extracting class objects via the Linq.Expressions namespace. All operations are pre-compiled.

GetEntitiesPropertyValues

Returns the property values of a collection of entities as an array of the specified TResult type.

The following example extracts all Id values from an array of Person objects.

var people = GetPeople(); // As a given variable
var keys = ClassExpression.GetEntitiesPropertyValues<Person, long>(people, "Id");
// Do the stuffs for the 'keys' here

Extraction is also supported via Field, DbField, or ClassProperty objects.

GetProperties

Returns a list of ClassProperty objects for the target entity.

var properties = ClassExpression.GetProperties<Person>();
// Do the stuffs for the 'properties' here

Use PropertyCache when extracting class properties, as it caches results for reuse.

GetPropertiesAndValues

Returns a list of PropertyValue objects containing the properties and their values for the target entity.

var propertiesAndValues = ClassExpression.GetProperties<Person>(person);
// Do the stuffs for the 'propertiesAndValues' here