C#

C # basic enhancement-delegate, Lamada expressions, and events (I ), 1. Delegate The C # delegate is equivalent to the function pointer in C/C ++. Function pointers use pointers to obtain the entry address of a function to perform operations on the

C # basic enhancement-delegation, Lambda expressions, and events (Part II ), 3. Events As a type in C #, events define the ability to send notifications for instances of classes and classes, so that events and executable code are bundled together.

C #: capture external variables in anonymous methods, First, introduce the topic with a piece of code. If you can directly output the code, it means this article is not suitable for you. (The code is introduced in the third edition of "understanding

C # simple understanding of events 1, EventArgsClass that contains event dataBase class,And provideDoes not containThe value of the event in the event data. When the event to be defined contains event data, you can derive the Custom Event Data class

Convert the string to an integer. Whether int. Parse, Convert. ToInt32 or int. TryParse is used ?, Convert. toint32 When we want to Convert a string to an integer int, we may think of the following three methods: int. Parse, Convert. ToInt32 and int.

Android-Spinner [implemented using C # And Java],The effect is as follows: C # implementation code Using Android. app; using Android. OS; using Android. widget; namespace SpinnerDemo {[Activity (Label = "@ string/ApplicationName", MainLauncher =

Vertical subdivision knowledge points in inheritance: property inheritance and subdivision knowledge points We will not share with you the situation that "the class instance can inherit the attributes of the parent class" is known to everyone. This

C # winform music production software, C # Music player This music player is winform. Functions: (the brackets are worth improving) 1: logon prompt (query database) 2: Skin rejuvenation function (right-click or press the button to implement) 3:

C # delegation and delegation chain, Delegation is an important feature of c. The Code is as follows: Class Program {public delegate void DelegateTest (); static void Main (string [] args) {DelegateTest dtstatic = new DelegateTest (Program. method1);

C # implement FTP upload, 1 /// 2 /// Upload File 3 /// 4 /// file to be uploaded 5 // target path 6 /// ftp address 7 // / ftp username 8 // ftp password 9 public static void UploadFile (FileInfo fileinfo, string targetDir, string

Reflection overview-C # features and reflectionOne of the tasks of the. NET compiler is to generate metadata descriptions for all defined and referenced types. In addition to the standard metadata in the Assembly, the. NET platform also supports

6. Learn how to add a link to the table. 2. Add a link to the table. Overview: Linq to xml (ltx for short) is the xml curd provided by Microsoft Based on the linq technology. compared with System. XML operations in XML are easier. during this time,

Collection of SQL statement aggregation and other problems For example, a data table contains 20 data records.Read the first five data recordsSelect top 5 * from Table order by id desc5 Data records after reading the first 5 data records(That is,

Readonly and readonly attributes The readonly keyword is used to modify a field. When a field is declared as readonly, it can only be assigned to it during declaration in the corresponding class and in the constructor. Declare

C # Web browser control Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System. text; using System. windows. forms; namespace openUrl {public

C # sequence of functional programmingAfter a long time, I finally spent my spare time continuing to upload the function programming album. This time begins with preparing for the new IOS direction, I have written the OC tutorials into the SWIFT

JSON extension class -- JsonHelper, json extension jsonhelper 1. Reference The Newtonsoft. Json Library (JSON. NET ). 2. copy and paste JsonHelper. Using System; using System. collections. generic; using System. linq; using Newtonsoft. json; using

Use the Lock keyword in C #Zookeeper I. Lock Definition The lock keyword can be used to ensure that the code block is executed without being interrupted by other threads. It can define a piece of code as a critical section. A mutex section allows

Windows Forms control and windows Forms control used to list options Controls that provide the option list include ListBox, ComboBox, and CheckedListBox. The following describes how to correctly use and select these controls. The functions of these

C # small summary (Object-Oriented ), Preface I have been learning c # for a year. I have never written a general summary of some notes. So now I am writing a small summary. Content 1. Object-oriented I believe that all the children's shoes who