Collection types are the common variations of data collections, such as hash tables, queues, stacks, bags, dictionaries, and lists. Collections are based on the interface, the interface, the interface, or their generic counterparts.

Gross Versus Net Collections. Q&A January 01, 2008. Question: I am new to my practice, and have noticed that its gross collection percentage is down. I'm trying to figure out why. What do you suggest? Answer: I'd basically ignore gross collection percentage. All it does is say what percent you collected of what you.

The interface and the interface are both derived from the interface; therefore, all collections are based on the interface either directly or indirectly. In collections based on the interface (such as,, or ) or directly on the interface (such as,,, or ), every element contains only a value. Chemdraw Torrent Crack Spyhunter there. In collections based on the interface (such as the and classes, the and generic classes), or the classes, every element contains both a key and a value.

The class is unique because it is a list of values with keys embedded within the values and, therefore, it behaves like a list and like a dictionary. Generic collections are the best solution to strong typing. However, if your language does not support generics, the namespace includes base collections, such as,, and, which are abstract base classes that can be extended to create collection classes that are strongly typed. When efficient multi-threaded collection access is required, use the generic collections in the namespace. Collections can vary, depending on how the elements are stored, how they are sorted, how searches are performed, and how comparisons are made. The class and the generic class provide first-in-first-out lists, while the class and the generic class provide last-in-first-out lists.

The class and the generic class provide sorted versions of the class and the generic class. The elements of a or a are accessible only by the key of the element, but the elements of a or a are accessible either by the key or by the index of the element. The indexes in all collections are zero-based, except, which allows arrays that are not zero-based. The LINQ to Objects feature allows you to use LINQ queries to access in-memory objects as long as the object type implements. LINQ queries provide a common pattern for accessing data; are typically more concise and readable than standard foreach loops; and provide filtering, ordering and grouping capabilities.

LINQ queries can also improve performance. For more information, see and. Related Topics Title Description Discusses the various collection types available in the.NET Framework, including stacks, queues, lists, arrays, and dictionaries. Describes the features of generic and nongeneric hash-based dictionary types.

Describes classes that provide sorting functionality for lists and sets. Describes the generics feature, including the generic collections, delegates, and interfaces provided by the.NET Framework. Provides links to feature documentation for C#, Visual Basic, and Visual C++, and to supporting technologies such as reflection.

The Collection class can be used immediately by creating an instance of one of its constructed types; all you have to do is specify the type of object to be contained in the collection. In addition, you can derive your own collection type from any constructed type, or derive a generic collection type from the Collection class itself. The Collection class provides protected methods that can be used to customize its behavior when adding and removing items, clearing the collection, or setting the value of an existing item. Most Collection objectscan be modified.

However, a Collection object that is initialized with a read-only object cannot be modified. Football Manager 2008 Full Torrent Indir. See for a read-only version of this class. Elements in this collection can be accessed using an integer index.

Indexes in this collection are zero-based. Collection accepts null as a valid value for reference types and allows duplicate elements. This section contains two code examples.

The first example demonstrates several properties and methods of the Collection class. The second example shows how to derive a collection class from a constructed type of Collection, and how to override the protected methods of Collection to provide custom behavior. Example 1 The following code example demonstrates many of the properties and methods of Collection. The code example creates a collection of strings, uses the method to add several strings, displays the, and lists the strings. The example uses the method to find the index of a string and the method to determine whether a string is in the collection. The example inserts a string using the method and retrieves and sets strings using the default property (the indexer in C#). The example removes strings by string identity using the method and by index using the method.

Finally, the method is used to clear all strings from the collection. Public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe. A Collection can support multiple readers concurrently, as long as the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure.

To guarantee thread safety during enumeration, you can lock the collection during the entire enumeration. To allow the collection to be accessed by multiple threads for reading and writing, you must implement your own synchronization.