barcode printing using c#.net A Sampling of Methods De ned by SortedDictionary<TKey, TValue> in C#.NET

Printer QR in C#.NET A Sampling of Methods De ned by SortedDictionary<TKey, TValue>

A Sampling of Methods De ned by SortedDictionary<TKey, TValue>
Creating QR Code In Visual C#
Using Barcode generation for .NET framework Control to generate, create Quick Response Code image in .NET applications.
Recognizing QR-Code In C#
Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
In addition to the properties defined by the interfaces that it implements, SortedDictionary<TKey, TValue> defines the following properties:
Barcode Printer In Visual C#
Using Barcode drawer for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
Bar Code Scanner In Visual C#
Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications.
Property public IComparer<TKey> Comparer { get; } public SortedDictionary<TKey, TValue>KeyCollection Keys { get; } public SortedDictionary<TKey, TValue>ValueCollection Values { get; } Description Obtains the comparer for the invoking dictionary Obtains a collection of the keys
Print QR Code ISO/IEC18004 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
Draw QR Code In VS .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create QR-Code image in Visual Studio .NET applications.
Obtains a collection of the values
QR Creator In VB.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create QR-Code image in VS .NET applications.
2D Barcode Generator In C#.NET
Using Barcode encoder for .NET framework Control to generate, create 2D Barcode image in .NET framework applications.
Notice that the keys and values contained within the collection are available as separate lists through the Keys and Values properties The types SortedDictionary<TKey, TValue>KeyCollection SortedDictionary<TKey, TValue>ValueCollection are collections that implement both the generic and non-generic forms of ICollection and IEnumerable SortedDictionary<TKey, TValue> defines the following indexer (which is specified by IDictionary<TKey, TValue>): public TValue this[TKey key] { get; set; } You can use this indexer to get or set the value of an element You can also use it to add a new element to the collection Notice that the index is not actually an index, but rather the key of the item When enumerated, SortedDictionary<TKey, TValue> returns key/value pairs in the form of a KeyValuePair<TKey, TValue> structure Recall that this structure defines the following two properties:
Bar Code Encoder In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create bar code image in .NET applications.
Encoding UPC-A Supplement 2 In C#.NET
Using Barcode drawer for .NET framework Control to generate, create UPC Symbol image in .NET framework applications.
25:
Bar Code Creation In Visual C#.NET
Using Barcode creator for .NET framework Control to generate, create bar code image in .NET framework applications.
USPS Confirm Service Barcode Maker In C#
Using Barcode creator for .NET Control to generate, create USPS PLANET Barcode image in .NET applications.
Collections, Enumerators, and Iterators
Barcode Scanner In .NET Framework
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET applications.
Decode UPC Code In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
public TKey Key { get; } public TValue Value { get; } These properties obtain the key or value associated with an entry However, most of the time you won t need to use KeyValuePair<TKey, TValue> directly because SortedDictionary<TKey, TValue> allows you to work with the keys and values individually However, when enumerating a SortedDictionary<TKey, TValue>, such as in a foreach loop, the objects being enumerated are KeyValuePairs In a SortedDictionary<TKey, TValue>, all keys must be unique, and a key must not change while it is in use as a key Values need not be unique Here is an example that demonstrates SortedDictionary<TKey, TValue> It reworks the Dictionary<TKey, TValue> example shown in the preceding section In this version, the database of employees and salaries is sorted based on name (which is the key)
Reading ANSI/AIM Code 128 In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
Linear 1D Barcode Generation In VB.NET
Using Barcode maker for VS .NET Control to generate, create Linear Barcode image in .NET framework applications.
// Demonstrate the generic SortedDictionary<TKey, TValue> class using System; using SystemCollectionsGeneric; class GenSortedDictionaryDemo { static void Main() { // Create a SortedDictionary that holds employee // names and their corresponding salary SortedDictionary<string, double> dict = new SortedDictionary<string, double>(); // Add elements to the collection dictAdd("Butler, John", 73000); dictAdd("Swartz, Sarah", 59000); dictAdd("Pyke, Thomas", 45000); dictAdd("Frank, Ed", 99000); // Get a collection of the keys (names) ICollection<string> c = dictKeys; // Use the keys to obtain the values (salaries) foreach(string str in c) ConsoleWriteLine("{0}, Salary: {1:C}", str, dict[str]); } }
UPC Code Maker In Objective-C
Using Barcode creator for iPhone Control to generate, create GS1 - 12 image in iPhone applications.
Print Code 3/9 In None
Using Barcode generation for Microsoft Excel Control to generate, create USS Code 39 image in Excel applications.
PART II
UCC - 12 Recognizer In .NET Framework
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET applications.
Linear Barcode Generator In VS .NET
Using Barcode generation for ASP.NET Control to generate, create Linear 1D Barcode image in ASP.NET applications.
The output is shown here:
Butler, John, Salary: $73,00000 Frank, Ed, Salary: $99,00000 Pyke, Thomas, Salary: $45,00000 Swartz, Sarah, Salary: $59,00000
As you can see, the list is now sorted based on the key, which is the employee s name
The SortedList<TKey, TValue> Class
The SortedList<TKey, TValue> class stores a sorted list of key/value pairs It is the generic equivalent of the non-generic SortedList class SortedList<TKey, TValue> implements
Part II:
Exploring the C# Library
IDictionary, IDictionary<TKey, TValue>, ICollection, ICollection< KeyValuePair<TKey, TValue>>, IEnumerable, and IEnumerable< KeyValuePair<TKey, TValue>> The size of a SortedList<TKey, TValue> is dynamic and will automatically grow as needed SortedList<TValue, TKey> is similar to SortedDictionary<TKey, TValue> but has different performance characteristics For example, a SortedList<TKey, TValue> uses less memory, but a SortedDictionary<TKey, TValue> is faster when inserting out-of-order elements SortedList<TKey, TValue> provides many constructors Here is a sampling: public SortedList( ) public SortedList(IDictionary<TKey, TValue> dictionary) public SortedList(int capacity) public SortedList(IComparer<TKey> comparer) The first constructor creates an empty list with a default capacity The second creates a list that contains the same elements as those in dictionary The third lets you specify an initial capacity If you know in advance that you will need a list of a certain size, then specifying that capacity will prevent the resizing of the list at runtime, which is a costly process The fourth form lets you specify a comparison method that will be used to compare the objects contained in the list The capacity of a SortedList<TKey, TValue> list grows automatically as needed when elements are added to the list When the current capacity is exceeded, the capacity is increased The advantage of specifying a capacity is that you can prevent or minimize the overhead associated with resizing the collection Of course, it makes sense to specify an initial capacity only if you have some idea of how many elements will be stored In addition to the methods defined by the interfaces that it implements, SortedList<TKey, TValue> also defines several methods of its own A sampling is shown in Table 25-19 Notice the enumerator returned by GetEnumerator( ) enumerates the key/value pairs stored in the list as objects of type KeyValuePair In addition to the properties defined by the interfaces that it implements, SortedList<TKey, TValue> defines the following properties:
Property public int Capacity { get; set; } public IComparer<TKey> Comparer { get; } public IList<TKey> Keys { get; } public IList<TValue> Values { get; } Description Obtains or sets the capacity of the invoking list Obtains the comparer for the invoking list Obtains a collection of the keys Obtains a collection of the values
SortedList<TKey, TValue> defines the following indexer (which is defined by IDictionary<TKey, TValue>): public TValue this[TKey key] { get; set; } You can use this indexer to get or set the value of an element You can also use it to add a new element to the collection Notice that the index is not actually an index, but rather the key of the item
25:
Copyright © OnBarcode.com . All rights reserved.