㺧ҹ·Õè 2

µÑÇ´Óà¹Ô¹¡ÒÃáÅйԾ¨¹ì¤³ÔµÈÒʵÃì

 

2.1 µÑÇ´Óà¹Ô¹¡Ò÷ҧ¤³ÔµÈÒʵÃì(Arithmetic Operation)

 

µÑÇ´Óà¹Ô¹¡ÒÃ

¤ÇÒÁËÁÒÂ

µÑÇÍÂèÒ§

¼ÅÅѾ¸ì (X=11,Y=5)

+

ºÇ¡(Additon)

X + Y

 

-

ź(Subtraction)

X – Y

 

*

¤Ù³(Multiplication)

X * Y

 

/

ËÒÃ(Division)

X / Y

 

\

¼ÅËÒ÷Õèà»ç¹¨Ó¹Ç¹àµçÁ

X \ Y

 

mod

ËÒÃàÍÒ¼ÅÅѾ¸ì੾ÒÐàÈÉ(Modulus)

X mod Y

 

&

àª×èÍÁµÑÇÍÑ¡¢ÃÐ

X & Y

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2 µÑÇ´Óà¹Ô¹¡ÒÃà»ÃÕºà·Õº (Comparative Operation) ¼ÅÅѾ¸ì¨Ò¡¡ÒÃà»ÃÕºà·Õºà»ç¹¨ÃÔ§(True) ËÃ×Í à·ç¨ (False)  «Öè§ÁÕà¤Ã×èͧËÁÒ´ѧ¹Õé

µÑÇ´Óà¹Ô¹¡ÒÃ

¤ÇÒÁËÁÒÂ

µÑÇÍÂèÒ§

¼ÅÅѾ¸ì (X=11,Y=5)

> 

ÁÒ¡¡ÇèÒ(Greater Than)

X > Y

 

< 

¹éÍ¡ÇèÒ(Less Than)

X < Y

 

>=

ÁÒ¡¡ÇèÒËÃ×Íà·èҡѺ(Greater Than or Equal)

X >= Y

 

<=

¹éÍ¡ÇèÒËÃ×Íà·èҡѺ(Less Than or Equal)

X <= Y

 

=

à·èҡѺ(Equal)

X =  Y

 

<> 

äÁèà·èҡѺ(Not Equal)

X <> Y

 

 

 

2.3 µÑÇ´Óà¹Ô¹¡Ò÷ҧµÃáÐ(Logical Operation) à»ç¹à¤Ã×èͧËÁÒÂãªéà»ÃÕºà·Õº·Ò§µÃáР¼ÅÅѾ¸ì·Õèä´é¨Ðà»ç¹¨ÃÔ§ (True) ËÃ×Íà·ç¨(False) ´Ñ§¹Õé

µÑÇ´Óà¹Ô¹¡ÒÃ

¤ÇÒÁËÁÒÂ

µÑÇÍÂèÒ§ (X=11,Y=5)

¼ÅÅѾ¸ì

And

áÅÐ(And)

(X >  10) And (Y<15)

 

OR

ËÃ×Í(Or)

(X > 10) Or  ( X<15)

 

NOT

äÁè(Not)

NOT (X >  10) And (Y<15)

 

 

 

 

2.4 ÅӴѺ¡ÒûÃÐÁÇżŢͧ¹Ô¾¨¹ì

à¤Ã×èͧËÁÒÂ

ÅӴѺ¡ÒûÃÐÁÇżÅ

(     )

1

^

2

*   / 

3

mod

4

+  -

5

 

µÑÇÍÂèÒ§ 1  10 + 2 * 8 / 4 * 5 –3

µÑÇÍÂèÒ§ 1  (10 + 2) * 8 / (4 * 5 –3)

 

 

 

 

 

 

 

 

 

2.5à»ÃÕºà·ÕºµÑÇ´Óà¹Ô¹¡Ò÷ҧ¤³ÔµÈÒʵÃìáÅеÃáÐÃÐËÇèÒ§ VB.Net ¡Ñº C#

VB.Net

C#

¤Ó͸ԺÒÂ

+    -     *     /     Mod

+    -    *      /     %

ºÇ¡ , ź , ¤Ù³ , ËÒà , ËÒÃẺ Modulas(ËÒÃàÍÒàÈÉ)

äÁèÁÕ

+=      -=     *=    /=    %=

ºÇ¡áÅСÓ˹´¤èÒ,  źáÅСÓ˹´¤èÒ,  ¤Ù³áÅСÓ˹´¤èÒ, ËÒÃáÅСÓ˹´¤èÒ,  ËÒÃàÍÒàÈÉáÅСÓ˹´¤èÒ

äÁèÁÕ

++    --

à¾ÔèÁ¤èÒ¢Öé¹ 1 ,  Å´¤èÒŧ 1

<      >     <=     >=

<       >      <=       >=

¹éÍ¡ÇèÒ,  ÁÒ¡¡ÇèÒ,  ¹éÍ¡ÇèÒËÃ×Íà·èҡѺ, ÁÒ¡¡ÇèÒËÃ×Íà·èҡѺ

=      <>

==    !=

à·èҡѺ,  äÁèà·èҡѺ

^   \

äÁèÁÕ

¡¡ÓÅѧ,  ËÒÃẺ¨Ó¹Ç¹àµçÁ (»Ñ´àÈÉ·Ôé§)

&  ËÃ×Í +

+

àª×èÍÁ¢éͤÇÒÁ

On  Error

Try  Catch

µÃǨÊͺ¢éͼԴ¾ÅÒ´¢Í§â»Ãá¡ÃÁ

And  Or Not

&&    ||     ~

áÅÐ, ËÃ×Í , ¹Ôàʸ ( ãªé´Óà¹Ô¹¡Ò÷ҧµÃáР)

a =  a + 1

a++  ËÃ×Í ++a

à¾ÔèÁ¤èҢͧµÑÇá»Ã a ¢Öé¹ 1

a =  a  - 1

a--  ËÃ×Í --a

Å´¤èҢͧµÑÇá»Ã a ŧ 1

a =  a + 2

a+ = 2

¹Ó¤èҢͧµÑÇá»Ã a ÁҺǡ 2 áÅéÇà¡çº¼ÅÅѾ¸ìäÇéã¹µÑÇá»Ã a

s = s + ”Hello”

s += ”Hello”

¹Ó¤èҢͧµÑÇá»Ã s ÁÒàª×èÍÁµè͡Ѻ¤ÓÇèÒ Hello áÅéÇà¡çº¼ÅÅѾ¸ìäÇéã¹µÑÇá»Ã s

2.7 à»ÃÕºà·Õº¤ÓÊÑ觵ÃǨÊͺà§×͹ä¢ÃÐËÇèÒ§ VB.Net ¡Ñº C#

VB.Net

C#

If x =10 then y=30

If(x == 10) y=30;

If(x=10) or (y>=15) then z=30

If((x == 10) || (y>=15)) z=30;

If(x<>10) and (y=15) then z=30

If((x != 10) && (y==15)) z=30;

If x>10 then

 

   ' ¤ÓÊÑè§ 1

 

Else

 

    ' ¤ÓÊÑè§ 2

 

End if

If (x>10)

    {

      //¤ÓÊÑè§ 1

    }   

Else

    {

      //¤ÓÊÑè§ 2

     }

End if

Select Case X

    Case 10, 20

           ' ¤ÓÊÑè§ 1

    Case 30

           ' ¤ÓÊÑè§ 2

    Case >=31

           ' ¤ÓÊÑè§ 3

    Case Else

           ' ¤ÓÊÑè§ 4

 End Select

 

switch(X)

 {

     case “10” :

     case “20” :

             //¤ÓÊÑè§ 1 ;  break;

     case “30” :

             //¤ÓÊÑè§ 2 ;  break;

      default :

          if(x>=31)

             {

                 // ¤ÓÊÑè§ 3;

              } else

               {

                  // ¤ÓÊÑè§ 4;

                }

           break;

  }     

 

2.8 à»ÃÕºà·Õº¤ÓÊÑè§Ç¹ÅÙ»ÃÐËÇèÒ§ VB.Net ¡Ñº C#

VB.Net

C#

Dim I As Short

For i=1  To  10

         ' ¤ÓÊÑè§

Next i

for(short i=1; i<=10; i++)

   {

       // ¤ÓÊÑè§ 1;

   }

Dim I As Short

For i=1 To 10 Step 2

       ' ¤ÓÊÑè§

Next i

for(short i=1;  i<=10; i+=2)

   {

       // ¤ÓÊÑè§ ;

   }

Dim I As Short

For i=1 To 10 Step -2

       ' ¤ÓÊÑè§

Next i

for(short i=1;  i<=10; i-=2)

   {

       // ¤ÓÊÑè§ ;

   }

For Each field in Record

      ' ¤ÓÊÑè§

Next

foreach (field in Record)

   {

       // ¤ÓÊÑè§ ;

   }

Do While x=10

      ' ¤ÓÊÑè§

Loop

while (x ==10)

  {

       // ¤ÓÊÑè§ ;

   }

Do Until x<>10

    ' ¤ÓÊÑè§

Loop

while (x !=10)

  {

       // ¤ÓÊÑè§ ;

   }

Do

    ' ¤ÓÊÑè§

Loop While x=10

do

  {

       // ¤ÓÊÑè§ ;

   } while(x ==10);

Do

    ' ¤ÓÊÑè§

Loop Until x<>10

do

  {

       // ¤ÓÊÑè§ ;

   } while(x!=10);

 

2.9 à»ÃÕºà·Õº¿Ñ§¡ìªÑ¹áÅЫѺÃÙ·Õ¹ÃÐËÇèÒ§ VB.Net ¡Ñº C#

VB.Net

C#

Function Test(ByVal a As Short) As String

         ' ¤ÓÊÑè§

         Return "¤èÒ·ÕèÊ觤׹¨Ò¡¿Ñ§¡ìªÑ¹"

         Exit Function

End Function

String Test(short a)

   {

       // ¤ÓÊÑè§ 1;

      Return "¤èÒ·ÕèÊ觤׹¨Ò¡¿Ñ§¡ìªÑ¹"

   }

Sub Test2(ByRef a As String)

        ' ¤ÓÊÑè§

End Sub

void Test2(ref string a)

  {

       // ¤ÓÊÑè§ 1;  

   }

µÑÇÍÂèÒ§¡ÒÃàÃÕ¡ãªé¿Ñ§¡ìªÑ¹áÅЫѺÃÙ·Õ¹

VB.Net

C#

' ¡ÒÃàÃÕ¡ãªé¿Ñ§¡ìªÑ¹

Dim strRec As String

strRec = Sum(11)

// ¡ÒÃàÃÕ¡ãªé¿Ñ§¡ìªÑ¹

string strRec ;

strRec = Sum(11);

' ¡ÒÃàÃÕ¡ãªé«ÑºÃÙ·Õ¹

Call Sum( "Hello" )

 

// ¡ÒÃàÃÕ¡ãªé«ÑºÃÙ·Õ¹

// (¿Ñ§¡ìªÑ¹·ÕèäÁè¤×¹¤èÒã´æ ¡ÅѺÁÒ)

Sum(ref "Hello" );

 

 

2.10 à»ÃÕºà·Õºª¹Ô´¢éÍÁÙÅ C# ¡Ñº VB.NET

VB.Net

C#

¤Ó͸ԺÒÂ

Date

System.DateTime

¢¹Ò´ 64 ºÔµà¡çºÇѹ·Õè 1 Á¡ÃÒ¤Á »Õ 1 ¶Ö§ 31 ¸Ñ¹ÇÒ¤Á

SByte

sbyte

¢¹Ò´ 8 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè -128 ¶Ö§ 127

Byte

byte

¢¹Ò´ 8 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè 0 ¶Ö§ 255

Boolean

bool

¢¹Ò´ 16 ºÔµà¡çº¤èÒµÃáРtrue(¨ÃÔ§) ËÃ×Í false(à·ç¨)

Short

short

¢¹Ò´ 16 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè -32,768 ¶Ö§ 32,767

Integer

int

¢¹Ò´ 32 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè -2,147,483,648  ¶Ö§ 2,147,483,647

Long

long

¢¹Ò´ 64 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè -9,223,372,036,854,775,808  ¶Ö§  -9,223,372,036,854,775,807

UInt16

ushort

¢¹Ò´ 16 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè 0 ¶Ö§ 65,535

UInt32

uint

¢¹Ò´ 32 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè 0 ¶Ö§ 4,294,967,295

UInt64

ulong

¢¹Ò´ 64 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹àµçÁµÑé§áµè 0 ¶Ö§ 184,467,440,737,095,551,615

Single

float

¢¹Ò´ 32 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹·È¹ÔÂÁµÑé§áµè -3.4028235E+38  ¶Ö§

 -1.401298E-45  ÊÓËÃѺ¤èÒź áÅеÑé§áµè  -1.401298E-45  ¶Ö§ 3.4028235E+38 ÊÓËÃѺ¤èҺǡ

Double

double

¢¹Ò´ 64 ºÔµà¡çº¤èÒàÅ¢¨Ó¹Ç¹·È¹ÔÂÁµÑé§áµè -1.79769313486231570E+308  ¶Ö§ -4.94065645841246544E-324 ÊÓËÃѺ¤èÒź áÅеÑé§áµè ¶Ö§ -4.94065645841246544E-324 ¶Ö§1.79769313486231570E+308 ÊÓËÃѺ¤èҺǡ

Char

char

¢¹Ò´ 16 ºÔµà¡çºµÑÇÍÑ¡É÷ÕèàªéÒËÑÊẺ Unicode 1 µÑÇÍÑ¡ÉÃ

String

string

à¡çº¢éͤÇÒÁã´æ â´Â¢Ò´·Õèãªé¨Ð¢Öé¹ÍÂÙè¡Ñº¨Ó¹Ç¹µÑÇÍÑ¡ÉÃ㹪éͤÇÒÁ¹Ñé¹

Object

object

¢¹Ò´ 32 ºÔµ·Õèãªéà¡çºáÍ´à´ÃʢͧÍͺà¨ç¤ª¹Ô´ã´¡çä´é ª¹Ô´¢éÍÁÙŹÕé¨Ö§ÊÒÁÒöãªéà¡çº¤èÒª¹Ô´¢éÍÁÙÅÍ×è¹æ ä´é·Ñé§ËÁ´

µÑÇÍÂèÒ§¡ÒûÃСÒȵÑÇá»Ã

VB.Net

C#

Dim strName As String

string strName ;

Dim strName As String="Tom"

string strName = "Tom" ;

Dim strA, strB As String

string  strA ,  strB ;

Dim cat As New Animal

Animal cat= new Animal ;

Dim Fname(3) As String

string[] Fname=new string[3];

Dim Name(3,3) As String

String[,] Name = new string[3,3] ;

 

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