C # programming guide
Interface attributes (C # programming guide)You can declare attributes on the interface (C # reference. The following is an example of the interface indexer accesser: C # copy the code public interface isampleinterface {// property declaration: string name {Get; Set ;}} the accessor of the interface attribute does not have a body. Therefore, the accessors are used to indicate whether the attribute is read/write, read-only, or write-only. In this example, the interface
employees. That is, how to provide employees with the ability to work and encroach on the functions of the company, while restricting the contractor to complete the required tasks? The solution is to divide these tasks into several tasks and then implement the necessary multiple interfaces. PHPS supports this feature. Consider the following example: PHP Interface iemployee{... }interface ideveloper{... }interface ipillage{... }classimplements
[100]; publicintthis [int Index] // indexer declaration {get {// check the index limits. if (index = 100) {arr [Index] = value ;}}} class mainclass {staticvoid main () {indexerclass test = new indexerclass (); // call the indexer to initialize the elements #2 and #5. test [2] = 4; test [5] = 32; For (INT I = 0; I iemployee, and these two interfaces have the same index signature, you must use an explicit interface member. That is, the following index Declaration: Public String
(': ', '; ');
Then take the value: Strvalues[0] is the name strvalues[1] is value?
System.Collections.Specialized.StringDictionary kv = cascadingdropdown.parseknowncategoryvaluesstring ( Knowncategoryvalues);
int iemployee;
Where employee is a category passed in the Knowncategoryvalues parameter passed by the parent control, and the category value of the parent control is "Employee"
The value of the knowncategoryvalues is: "Employeename:valu
the employee ID. Let's take a look at the design that violates the Dimitri law.
[Java] View plaincopy
Head office staff
Class employee{
Private String ID;
public void SetId (String id) {
This.id = ID;
}
Public String getId () {
return ID;
}
}
Branch Staff
Class subemployee{
Private String ID;
public void SetId (String id) {
This.id = ID;
}
Public String getId () {
return ID;
}
}
Class subcompanymanager{
Public listlistfor (int i=0; iSubemployee emp = new Subemployee ();
Assign an ID in order
ASP. net mvc Notes, asp. netmvcnotes
Receive data directly in the form of parameters
The UpdaetModel in the Controller updates the Model to obtain the submitted data.
Service:
The Nuget Package Manager in solution manages the Nuget packages in solution.
Two Methods for model binding in Controller:1. Bind formulation requires model binding to transmit data to the Controller.Public ActionResult Edit_Post ([Bind (Include = "Gender, City, DateOfBirth")] Employee)2. In UpdateModel, pass the para
# Coding=utf-8It's a way of making things more complicated. The merit is that there is a higher level of abstractionClass IEmployee:def insert_employee (self):PassClass Icompany:def insert_company (self):Pass# MySQL version of database accessClass Employeemysql (IEmployee):def insert_employee (self):Print "Insert employee MySQL database"Class Companymysql (Icompany):def insert_company (self):Print "Insert company MySQL database"Class Employeemssql (
.
The system. Collections. Generic namespace provides generic versions of many collection classes and interfaces.
Definition:Public class genericlist {Public void add (T input) // T is set as a type parameterPublic t add () // T is set to return value}Replaced by real types during compilation.
Use generic:Genericlist Genericlist Genericlist Genericlist Using list1 as an example, the compiler generates the following methods:Public void add (INT input)Public int add ()
Generic classes with multipl
compiler generates the following methods:Public void add (INT input)Public int add ()
Generic classes with multiple type parameters:Public class name Generic constraints:Make sure that the parameters used by generic classes are the types that provide specific methods.Public class genericlist If the iemployee Interface contains the method, the compiler will verify that the type used to replace T must implement the
input)public int Add ()Generic class with multiple type parameters:public class class name Generic constraint:Ensure that the parameters used by the generic class are types that provide a specific method.public class genericlistIf the IEmployee interface contains a method, the compiler verifies that the type used to replace T must implement the IEmployee interface.
Generic method: Allows you to take a way
)public int Add ()
Generic class with multiple type parameters:public class class name
Generic constraint:Ensure that the parameters used by the generic class are types that provide a specific method.public class genericlistIf the IEmployee interface contains a method, the compiler verifies that the type used to replace T must implement the IEmployee interface.
Generic method: Allows you to take a way to
We say that some of the new features are introduced in c#3.0, but the individual thinks extension method is the most exhilarating and innovative.
It really solves that by extending the existing type intact, you can add the required method members to the definition without making any changes to the type. Let me tell you the following.
Before c#3.x out.
We all know that JavaScript has a new prototype, like the extension method in c#3.x. There's not much going on here.
We mainly look. NET's imp
3.3.32 abstract products, respectively, Iuser and IEmployee
3.3.4 the realization of specific products
4. Model Summary
4.1 Advantages4.1.1 specific products are separated from the customer code4.1.2 Easy to change product series (e.g. SQL Server product family, access product family)4.1.3 unifies a family of product families together to create
4.2 DisadvantagesIt is difficult to extend a new product in a pro
), poor encapsulation (each employee information is exposed to the outside), but also useful for their own words is trouble, not easy to maintain later .The following modifications are made to the Factory mode:2. Create an Employee abstract class: Iemolyee, then each employee inherits from that class: Public InterfaceIEmployee {voiddosomething (); } Public classEmloyeea:iemployee { Public voiddosomething () {Console.WriteLine ("EMLOYEEA to fetch the money."); } } classEmloyeeb:iemplo
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