Basic knowledge of C #

A

C#

Features of the language:

A

Universal, cross-platform support

b

Simple, mainly reflects the characteristics of garbage collection, reference, etc.

C

Object-oriented design

D

And

Web

Application of tight bonding

E

Security mechanisms

F

Compatibility

G

Flexible version-processing technology

H

C#

Provides a complete error and exception triggering mechanism

Two Simple.

C#

Programming Syntax:

Using

System;

Using

System.Collections.Generic;

Using

System.Linq;

Using

System.Text;

Namespace

Sample1_1

//

namespace of the defined project

{

Class

Program

//

Defines the class

{

Static

void

Main (

String

[] args)

//

Defined by

Main

Function

{

Console

. WriteLine (

"

Please enter your name:

"

);

//

Output to the screen

String

Name =

Console

. ReadLine ();

//

Reading data entered by the user

Console

. WriteLine (

"{0}

Welcome here.

c#4.0

World

"

, name);

}

}

}

Three

C#

Language variables, constants, and data types:

A

Variable: variable data type

Variable names (identifiers) or

Variable data type

Variable names (identifiers)

=

Variable Value

b

Constant:

Const

Constant data type

Constant Name (identifier)

=

Constant value

C

Data type:

C#

is a strongly typed language

I.

Value type: derived from

System.Object

Of

System.ValueType

Derived, declares a variable

With the stack.

1.

Simple Type:

SByte

BYTE type

Short

Short-integer

Int

Integral type

Long

Long integer type

Float

Floating point

Type

Double

Double-precision floating-point type

Char

Character type

bool

Boolean type

2.

Collection type: With

Enum

Statement

3.

Structure type: With

struct

Statement

Ii.

Reference type: Assigned to the heap

1.

Class Type:

2.

Object type

3.

String type: With

String

Statement

4.

Interface type: With

Interface

Statement

Basic knowledge of C #