c# fundamentals book

namespace is System.Web.Extensionsnamespacetestjson{ Public classProgram { Public Static voidMain (string[] args) { stringJsonstr =NewStreamReader ("JsonData.txt"). ReadToEnd (); Postaldeliverymodel Mode=NewJavaScriptSerializer (). Deserialize(JSONSTR); Console.readkey (); } }}3. Run the monitor model object. The data is already in the object.4. Methodological review, although acquired. However, the public property name of this method class must corre

recipient of the message, the method that the receiving object should take, and the parameters required by the method. Also, the object that receives the message may return some information to the object that sent the message after the corresponding method has been executed. In the above example, the car's instrument will appear to have reached the speed and so on.In C #, message processing is called an event. objects can activate events as part of t

C # Programming Fundamentals-ConstantsConstants are immutable values that are known at compile time and do not change during the lifetime of the program. Constants are declared using the const modifier. Constants must be initialized at declaration time, and the type of the constant must be one of the following types: sbyte/byte/short/ushort/int/uint/long/ulong/char/float/double/decimal/bool/string/ Enumerat

areThe member variables and member functions in the 36.c++ class object are stored separately, the member variables are stored in the object, static is stored in the global data area, the member functions are stored in the code snippet, and the program is composed of data segments and code snippets.The. Thispointer points to the current objectOperator overloading38.C Library 39.cout represents the object o

UDP at this point is much better than TCP, because UDP consumes less system resources.However, in the practical application, it is found that very many users or TCP transmission mode, the establishment of two-level center 1:a (1:N), that is, each sub-center corresponding N/a equipment, processing data independently, and then unified data transfer to the main center. This ensures that the transmission protocol of TCP is used in the transmission process. It also has the advantage of having a cent

follows.DELETE from StudentsWHERE SName = ' Zhang Qing cut 'In another case, if the primary key value of the row to be deleted is referenced by another table, for example, the StudentID in the score table refers to the SCODE column in the Student information table, then the referenced row is deleted:DELETE from StudentsWHERE SCode = 22SQL Server will report error messages that conflict with constraintsTip: The DELETE statement deletes the entire record and does not delete only a single column,

type conversions(1) Automatic type conversion (implicit conversion): small type to large type, automatically completed by the program(2) Forced type conversion (display conversion): Large type to small type, written by the programmer manual Code completionWay 1:xxx. Parse (String) XXX: The target type can only be: convert string to other typeSwitch to Int:int. Parse ()Switch to Float:float. Parse ()Mode 2:convert.toxxx (any type) function: Any type to any typeConvert to Int:Convert.ToInt32 (val

, the compiler to helpFor the second condition, one can understand:In the example abovevoid Cxmyimpl::getmethodnames (std::vectorThese two functions are defined within the base class, and are considered to be reflection-related APIs, but suppose I have to implement both functions myself for each class I write. Wouldn't it be exhausting.But in turn, the functions of these two functions are very easy, the code is very regular. That is to record the current class has those functions, the name and f

Hardware configuration:More than 586 PC compatible machine or brand machine, equipped with color display, mouse, keyboard, memory is not less than 20MB, hardDisk free space not less than 60MB. Recommended configuration for Memory 32MB or 64MB (or above), free disk space 500MBAbove.Software configuration:1. Operating system: Windows98,windows 2000,windows Xp,linux,unix2. Integrated development Environment:(1) under the Windows98,windows 2000,windows XP system, the main development of the compilat

enter your height:"); stringD =Console.ReadLine (); Console.Write ("Please enter your weight:"); stringE =Console.ReadLine (); Console.WriteLine ("--------------------Gorgeous split-line-----------------------"); Console.WriteLine (A+"Hi there! Your gender is ""+ B +"", your age is""+c+"", your height is""+d+""and your weight is""+e+"". "); Console.ReadLine (); } }}usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Tex

. Create three button controls in the form, click any of the button controls, and then press CTRL and select the other two controls with the left mouse button, then right-click on any button, select the Properties command, and set its font in the pop-up Properties dialog box;(8) Layout form via Format menu: The button control is still an example. Select the button control, and then, in the menu bar, select: Format----Horizontal spacing--same interval. (Other command functions, etc.);(9)1th Lesso

There are types of things in everyday life, such as when we say "a woman", then "woman" is the type of person. We can say that "women are made of water", so the listener knows that this is the "female" type of person. If you go to the butcher's to buy meat, you can say to the boss "I want 10 pounds of pork", then the boss must know you are to "pig" this type of meat.In everyday life These languages are of a type, but in everyday life there are some languages that are not of the same type. For ex

all the data in a curly brace, assigning an initial value to each element in the order in which the array is arranged.int a[3][4]={0,1,2,3,4,5,6,7,8,9,10,11};③ only assigns initial values to some elements.int a[3][4]={{1},{2},{4}};1 0 0 02 0 0 04 0 0 0int a[3][4]={{1},{0,2},{0,0,4}};1 0 0 00 2 0 00 0 4 0int a[3][4]={{1},{3,2}};1 0 0 03 2 0 00 0 0 0int a[3][4]={{1},{},{9}};1 0 0 00 0 0 09 0 0 0④ If an initial value is assigned to all elements, the first-dimension length can be unspecified when t

. NET Foundation:. NET and C #. NET is a platform C # is a languagePurpose of. NetA. Desktop Application B. Web application C. Professional game development (XBOX360) D. Embedded device software development E. Smartphone app development F. Tablet app developmentBusiness:static void Main (string [] args) Main function, method entryCompiler principle:1. Write the s

intuitive to use than GDB's layout commands.(1) gdbmgr download.git clone https://github.com/vim-scripts/gdbmgr.gitYou can also download it at the following address:https://www.vim.org/scripts/download_script.php?src_id=18153(2) gdbmgr compilation.LS ${HOME}/.VIM/BUNDLE/GDBMGR/GDBMGR/SRCGDBMGR.C gdbmgr.h gdbmgr.o gdbmgr.so Makefile Makefile.macPerform make to compile.(3) enable the Gdbmgr plugin in the. vimrc file.Refer to the contents of the plugin Gdbmgr line in the previous. vimrc file.(4) T

In a template-specific version of a call, the argument type must exactly match the formal parameter type of the special version function, and if it does not, the compiler instantiates an instance for the argument template definition. Lift a chestnut: Template Again, the argument type must be the formal parameter type of the special version function. Exact Match, even if there is no const in the front of the argument, and the template parameter does not constitute a special. The sp

From: http://geekswithblogs.net/BlackRabbitCoder/archive/2011/06/16/c.net-fundamentals-choosing-the-right-collection-class.aspx The. NET Base Class Library (BCL) has a wide array of collection classes at your disposal which make it easy to manage collections of objects. while it's great to have so far classes available, it can be daunting to choose the right collection to use for any given situation. as hard as it may be, choosing the right collection

);Nums. Remove (1);4. Modifying elements: Modifying one of the values in an elementVariable name [index] = value;Code implementationint maxindex = numbers. Count-1; Console.Write ("Please enter a subscript to delete (0-"+maxindex +")");int index = int. Parse (Console.ReadLine ()); if (Index 0 | | index > maxindex) {Console.WriteLine (" Yes! You entered the wrong, subscript out of range, press ENTER to continue "); Console.ReadLine ();} Else{Console.WriteLine (" please re-enter a new number ");

= (girlnum/(boynum +float(Girlnum))) * -;111cout "The percentage of girls is:""%"Endl; the 113 intT; theCIN >>T; the } the 117 //4. Enter 14 digits to remove the number on each of the numbers. 118 119 voidFilternumber () -{//1234121cout "Please enter a number (four digit number)! "Endl;122 intnum;123CIN >>num;124 intGE = num%Ten; the intShi = (num% -) /Ten;126 intBai = (num% +) / -;127 intQian = num/ +; -cout "The 4 numbers obtained were:"" "" "" "Endl;129 the in

(b); 4 console.readline ();Optional topicsusingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;namespaceExercises 3{classProgram {Static voidMain (string[] args) {Console.Write ("How many years have your mother been a stranger? "); stringA=Console.ReadLine (); Console.Write ("How old are you this year? "); stringb=Console.ReadLine (); intc = .; intD=int. Parse (a); intE=int. Parse (b); intF=c-d-e; Consol