Collection<T> Observable Introduction
Generated Source Code Base Class
System.Collections.ObjectModel.Collection<T>
Description
The Collection<T> (Collection(Of T) in Visual Basic)
base class provides the functionality for a "basic" collection. Unlike
the non-generic collection base classes, Collection<T> is
not abstract and it can, therefore, be used as is. The generated source
code provides a closed constructed type, derived from the Collection<T>
base class that enhances the basic functionality by adding the following members:
RaiseListChangedEvents property, AddRange method and overloaded
Find, FindAll and TrueForAll methods and a
ListChanged event. The inclusion of the ListChanged event provides
developers targeting version 2.0 of the .Net Framework with a collection class with
change notification functionality. The event is fired when the collection changes
e.g. when an item is added or removed and if the collected item implements
the System.ComponentModel.INotifyPropertyChanged interface, when a collected
class property changes.
A private, nested, read only wrapper class can be generated as part of the Collection<T>
derived collection class source code. The read only wrapper is derived from the
generated collection type, therefore it can be returned, transparently, from any
property or method that is typed as the generated collection class. The read only
wrapper class does not allow write operations on the underlying
collection when called on an instance of the relevant generated collection class
type or when called explicitly on the IList or IList<T>
interface.
A private, nested, thread safe, synchronized wrapper class can
be generated as part of the Collection<T> derived collection
class source code. The synchronized wrapper is derived from the generated collection
type, therefore it can be returned, transparently, from any property or method that
is typed as the generated collection class. The synchronized wrapper class performs
thread safe operations on the underlying collection when called on an instance of
the relevant generated collection class type or when called explicitly on the
IList or IList<T> interface.
Generated Source Code .Net Framework Version Compatibility
Versions: 3.5, 3.0 and 2.0
Generation Properties
You will be required to select/specify the following values in the generation
property wizard as part of the source code generation process:
| Property |
Description |
| Language |
You can generate either CSharp or Visual Basic source code |
| Collected Class Name |
The Type or Class name of the objects that are to be stored in the collection |
| Collection Class Name |
The Type or Class name of the collection |
| Namespace |
The collection class namespace (CSharp only) |
| Find Property Name |
The name of the collected class property to use when searching the collection |
| String Comparison |
The string comparison to use when searching the collection using the value of a
string property
|
| Allow Null Items |
Specify True if the collection is to allow null items to be added, False if not |
| Wrapper |
In addition to the collection class you can also generate a read only or synchronized
wrapper class for the collection
|
Note
If a value type is specified as the collected class, the private, FindItem
method has to be modified to remove the check for a null item.
If the collected class is not in the same namespace as the collection
class, a using (Imports in Visual Basic) statement will
need to be added to the generated source code.
Visual Basic Only
If the collection class is not in the default (project) namespace
i.e. it is in a sub-namespace, a Namespace statement will need
to be added to the generated source code.
Terms and Conditions
Blayd Software retain the copyright and other intellectual rights to the source
code as originally generated. However, once you have the source code, you may change
it by altering members, adding new members or removing members and you may use the
source code in your own personal or commercial projects, either in its original
form or with your own alterations. We strongly recommend that you read the full
terms and conditions for the use of the generated source code before continuing.
Hints and Tips
We have put together a page of hints and tips to help you get the most out of our
.Net Framework source code generator. If you have any doubts or queries about the
generation properties and their influence on the generated source code or any other
queries we recommend that you read the hints and tips before continuing.
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