C#

using System;Using System.Collections.Generic;Using System.Linq;Using System.Text;Using System.Data;Using System.Data.SqlClient;Using System.Windows.Forms;1 Public classDBHelper2 {3 Static stringConnStr ="Workstation id = localhost;"+4

/// ///object into JSON/// /// /// objects that need to be formatted /// JSON string Public Static stringDatacontractjsonserialize(T jsonobject) {DataContractJsonSerializer

New collection: ArrayList n = new ArrayList ();Added content: N.add (1);N.add ("Ren");Number of outputs: Console.WriteLine (n[1]);Insert Wo:n.insert (4, "Wo") in the fourth position;Data for output N[4]: Console.WriteLine (n[4]);Determine if it

The S1293 and S2220KTV projects are over. 1. Interface prototype (set up the front-end interface) 2. Database 3. Architecture Design 4. agreed file Extraction   July 20, 2015 afternoon

Multi-thread, multi-task management simple demo, multi-thread demo Requirement: Assume that multiple tasks need to be executed, and each task can be completed not at half past one (you need to see the intermediate execution status ); Multiple tasks

Csharp: bind data with the Enterprise Library object, csharpenterprise  Enterprise Library: https://msdn.microsoft.com/en-us/library/ff648951.aspx /// /// whether the record exists /// /// /// public bool Exists (string ReportID) {Database db =

C # how to solve the problem that the object reference is not set to the object instance during Interface DesignWhen you are working on a. Net project, you often encounter the problem of not setting the object reference to the object instance during

General learning notes for C # advanced programming (version 6) (1): general advantages and features (reproduced ), Source: http://www.cnblogs.com/xun126/archive/2011/01/13/1933838.html Generic is a new feature of CLR 2.0. In CLR 1.0, you need to

Iii. SuperIO secondary development process. superio Secondary Development1.1 secondary development Flowchart  1.2 reference related components Find the "Development Kit" and reference the relevant components. For example:  1.3 Develop the device

It helps you understand the internal implementation of Dictionary and the implementation of dictionary.   Developers who know about Dictionary know that Dictionary addition is slower than List, but query is faster. How does Dictionary be implemented?

Explore C #6.0 syntactic sugar analysis, Reading directory:Automatic attribute initialization by default Usage: public string Name { get; set; } = "hello world"; To make it easy to understand and use the 2.0 syntax, the compiler generates the

C # Summary of loop implementation methods, C # loop statements: while, for, foreach 1. while Loop static void Main(string[] args) { int[] hs = { 1,2,3,4,5,6,7,8,9}; int ligh = hs.Length; while

C # ing between data types and. NET CTS, C # common value types, such as int, float, double, and bool, are alias of. net cts (general type system). The appendix is as follows: C # type . NET Framework type Bool System.

C # exploring equality judgment, C # method for Equality judgment: // Determine whether the specified System. Object is equal to the current System. ObjectPublic virtual bool Equals (object obj) {return RuntimeHelpers. equals (this, obj);} //

. NET Design Mode: Singleton mode;. net Design Mode Reasons for my learning Singleton mode: When using the MDI WinForm program, you must open each sub-form only once (only one sub-form instance can be opened at the same time). There are many

Singleton mode application ___ network TV genie ,__ network TV genie Network TV genie     First, create several basic classes.       Programming attributes: broadcast time, time period, name, and video path Channel base class attributes: channel

ASP. NET 4.0 has not registered a solution on the Web server, asp. net4.0 When you use VS2010 to create a web application, the following prompt is displayed: ASP. NET 4.0 has not been registered on the Web server. To make the website run correctly,

C # create the simplest web service without the need for IISThis program is only an entry-level program, so do not consider1. multithreading.2. Security.3. Download objects from the endpoint is not considered.4. Keep-Alive.5. Do not consider head.6.

Substantive understanding of async/await, and asyncawait Async/await keywords can help developers easily write asynchronous code. However, many developers are confused about how to use these two keywords. This article briefly describes the essence

C # date formatting, Generally, the date format of our computer is yyyy-M-d, which is the default format of the system, but sometimes, to display, we may only display the year and month yyyy-M, in this case, the date displayed by the DatePicker