C # & VB brief introduction to two language syntax
Www.chinacs.net2001-6-2 12:45:00 Chinese
C # technology station
Variable reputation
C # syntax
INT X;
String S;
String S1, S2;
Object O;
Object obj = new object ();
Public String Name;
VB grammar
DIM X as integer
DIM S As String
DIM S1, S2 AS STRING
DIM O 'IMPLICITLY OBJECT
DIM OBJ AS New Object ()
Public Name As String
2 Statement C #: Response.write ("Chinese C # Technology Station"); VB: Response.write ("Chinese C # Technology Station")
3. Note Strategy // Chinese C # Technology Station / * Welcome Access, Chinese C # Technology Station * /
VB: 'Chinese C # Technology Station
4. Get the variable passing of the URL C #: string s = request.queryString ["name"]; string value = request.cookies ["key"]; VB: DIM S, VALUE AS STRING S = Request.QueryString ("Name" Value = Request.Cookies ("key"). Value 5. Declaration attribute C #: public string name {
Get {... returnit ...;
Set {... = value;
}
VB: Public Property Name As String
Get ... return ...; end get
Set ... = value; end set
End Property 6. Array C # String [] a = new string [3]; A [0] = "1"; A [1] = "2"; A [2] = "3"; // 2D array String [] [] a = new string [3] [3]; A [0] [0] = "1"; a [1] [0] = "2"; a [2] [0] = "3" ; VB: DIM A (3) as string a (0) = "1" a (1) = "2" a (2) = "3"
DIM A (3, 3) AS String A (0) = "1" A (1,0) = "2" a (2, 0) = "3"
DIM A () AS String A (0) = "1" a (1,0) = "2" A (2, 0) = "3"
DIM A (,) AS STRING A (0) = "1" a (1,0) = "2" a (2, 0) = "3"
7 Variable Initialization C #: string s = "Hello World"; int i = 1 double [] a = = = {= 3.00, 4.00, 5.00}; VB: DIM S AS STRING = "Hello World" DIM I as Integer = 1 Dim A ) AS DOUBLE = {3.00, 4.00, 5.00}
8; judgment statement (if statement) IF (request.queryString! = Null) {...} VB: if not (request.queryString = null) ... Endiff
9. Branch statement (CASE statement) C #: switch (firstname) {CASE "john": ... Break; Case "Paul": ... Break; Case "Ringo": ... Break;} VB: SELECT Firstname): Case "Paul": ... Case "rinco": ... End Select
10 for loop statement C # for (int i = 0; i <3; i ) a (i) = "test"; VB: DIM I as integer for i = 0 to 2 a (i) = "test" next
11 While Cycle C #: INT I = 0; While (i <3) {Console.writeline (I.ToString ()); i = 1;} VB: DIM I as Integer i = 0 do while i <3 console. WriteLine (I.TOString ()) i = i 1 loop 12 string connection C #: string s1; string s2 = "hello"; s2 = "world"; S1 = S2 "!!!"; VB: DIM S1, S2 AS STRING S2 = "Hello" S2 & = "WORLD" S1 = S2 & "!!!"
Declare event C #: void mybutton_click (object sender, evenetargs e) {...} VB: Sub MyButton_Click (Sender As Object, E AS EventArgs) ... End Sub
13 Statement Object C # MyObject obj = (MyObject) Session [ "Some Value"]; IMyObject iObj = obj VB: Dim bj As MyObject Dim iObj As IMyObject obj = Session ( "Some Value") iObj = CType (obj, IMyObject)
14 Data type conversion C # INT i = 3; string s = i.tostring (); double d = double.parse (s); VB: DIM I AS INTEGER DIM S AS STRING DIM D AS DOUBLE
i = 3 s = i.toString () d = CDBL (s)
15 categories of statements and inheritance C #: using system;
Namespace myspace {
PUBLIC CLASS foo: bar {
INT X;
Public foo () {x = 4;} public void add (int x) {this.x = x;} public int getnum () {returnix}}
}
VB: imports system
Namespace MySpace
Public Class Foo: Inherits Bardim x as inherit
Public Sub new () mybase.new () x = 4 End Sub
Public Sub Add (x as integer) me.x = me.x x end sub
Public function getnum () AS integer returnx x end function
END CLASS
End Namespace
16 Starial Master C #: USING SYSTEM;
Public class consolecs {
Public consolecs () {console.writeLine ("Object created");
Public static void main (string [] args) {console.writeline ("Hello World"); consolecs ccs = new consolecs ();
}
VB imports system
Public Class Consolevb
Public Sub New () MyBase.new () Console.WriteLine ("Object Created") End Sub
Public Shared Sub Main () Console.Writeline ("Hello World") DIM CVB As ConsolevB CVB = New Consolevb () End Sub
END CLASS
17 Standard module C # using system;
Public class module {
Public static void main (string [] args) {console.writeLine ("Hello World");}
} VB: imports system
Public module consolevb
Public Sub Main () Console.Writeline ("Hello World") End Sub
End module
