Using Directive

The using keyword is both a directive (this topic) and a statement.

For the using statement (i.e. to encapsulate the scope of an IDisposable object, ensuring that outside of that scope the object becomes cleanly disposed) please see Using Statement.

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Using Directive:

*Using Directive

*Access Static Members of a Class

*Associate an Alias to Resolve Conflicts

*Using alias directives

*Reference a Namespace

*Associate an Alias with a Namespace

Table Of Contents

0Getting Started With C#

3Conditional Statements

4Equality Operator

5Equals and GetHashCode

6Null-Coalescing Operator

7Null-Conditional Operators

8nameof Operator

9Verbatim String

10Common String Operations

11String Format

12String Concatenate

13String Manipulation

14String Interpolation

15String Escape Sequences

16StringBuilder

20On Algorithm for circular rotation of an array

23Overview of C# collections

26Collection Initializers

30Value type vs Reference type

31Built-in Types

32Aliases of built-in types

33Anonymous types

35Type Conversion

37Nullable types

38Constructors and Finalizers

39Access Modifiers

41Static Classes

42Singleton Implementation

43Dependency Injection

44Partial class and methods

45Object Initializers

47Extension Methods

48Named Arguments

49Named And Optional Arguments

50Data Annotation

53Naming Conventions

54XML Documentation Comments

55Comments and regions

58Using Statement

59Using Directive

60IDisposable interface

62IQueryable interface

63LINQ to Objects

66Parallel LINQ PLINQ

69C# 7.0 Features

70C# 6.0 Features

71C# 5.0 Features

72C# 4.0 Features

73C# 3.0 Features

74Exception Handling

75NullReferenceException

76Handling FormatException

77Read and Understand Stack trackes

80JSON handling

81Using json.net

82Lambda Expressions

83Lambda expressions

84Generic Lambda Query Builder

86Initializing Properties

87INotifyPropertyChanged interface

89Expression Trees

90Overload Resolution

91Preprocessor directives

95File and Stream IO

97Performing HTTP requests

98Reading and writing .zip files

99FileSystemWatcher

100Asynchronous Socket

101Action Filters

102Polymorphism

103Immutability

105Checked and Unchecked

110Async/Await, BackgroundWorker, Task and Thread examples

112Synchronization Context in Async/Await

113BackgroundWorker

114Task Parallel Library

115Making a variable thread safe

116Lock Statement

117Yield Keyword

118Task Parallel Library TPL Dataflow Constructs

119Functional Programming

120Func delegates

121Function with multiple return values

122Binary Serialization

125Accessing Databases

126Using SQLite

128Code Contracts

129Code Contracts and Assertions

130Structural Design Patterns

131Creational Design Patterns

132Implementing Decorating Design Pattern

133Implementing Flyweight Design Pattern

134System.Management.Automation

136Pointers and Unsafe Code

137Simulating C Unions with C# Structs

138Reactive Extensions Rx

139AsseblyInfo.cs examples

140Creating Console Application

141CLSCompliantAttribute

142ObservableCollection

143Hash Functions

144Generating Random Numbers

145Cryptography

146Unsafe Code in .NET

148Runtime Compile

149Interoperability

150.NET Compiler Platform Roslyn

151Creating Own MessageBox in Windows Form Application

152Including Font Resources

153Garbage Collector

154Windows Communication Foundation

155Contributors