C#

1"Add a DataTable DataSet.Tables.Add (DataTable) instance to the DataSet: DataSet DS=NewDataSet (); DataTable Table=NewDataTable ("Student Table"); Ds. Tables.add (table);2"Reading a DataTable DataTable from a DataSet=dataset.tables[0] or

1.webservice Helper Classespublic class Webservicehelper{public static string Callservicebyget (String strurl){Create an HTTP requestHttpWebRequest request = (HttpWebRequest) webrequest.create (strURL);Request. Method= "Get";HttpWebResponse response

C # contact and Analysis of IEnumerable, IEnumerator, and foreach, 1. About foreach and Both foreach and for are cyclic keywords. You can use these two keywords to traverse the collection object and obtain the information of each object in it for

C # Secondary Development of ObjectArx cad, 1. Environment setup: Install the CAD and objectArx libraries. Here cad2012 and objectArx2010 are installed, and vs is 2010. 2. Create a new class library project and reference AcDbMgd. dll and AcMgd. dll

C # review ②, C # review ② June 15, 2016 1. C # Symbols Identifier = (letter | '_' | '@') {letter | digit | '_'}. Note: 1. Unicode encoding 2. Case Sensitive 3. @ again to specify the symbol or symbol If ...... Keyword @ If ...... Identifier if   2.

C # Save the image to the database and read the image from the database and display it, How to save images to a database: Public void imgToDB (string SQL){// The imge variable name required to be saved in the parameter SQL is @ images// Call method

Use Json. NET to serialize the required data, json.net serialization During development, we often need to deal with the Json data format. For example, in Web development, data is often transmitted to the page through Json and then processed. When

Two methods for creating a 3D pipeline in Skyline (C #) The skyline software mainly includes TerraBuilder, TerraExplorer, and TerraGate. TerraBuilder uses images and dem to generate terrain and make it into a three-dimensional Earth or a

HtmlAgilityPack: HTML operation class library 1. Read the html webpage content on the network, obtain the html in the element body of the webpage, process the src attribute of all img elements, and return it as a string If

Implement unlimited classification by iteration and implement hierarchical classification by generation Speaking of the infinitus classification, I believe many people know what it is and have done it before. I also believe that the most widely used

C # verify the birthday paradox using a simulated program, The birthday paradox indicates that if there are 23 or more people in a room, the probability of two people having the same birthday is greater than 50%, which is about 50.7, this means that

. NET cross-platform Sake, KoreBuild, and sakekorebuild  I recently learned about cross-platform Asp.net Core 1.0 (also known as Asp. net5 \ Asp.net vNext) and found two new things: Sake and KoreBuild (or it has been running out for a long time

Seven Principles of object programming and seven principles of object programmingSeven Principles of object programming: 1. OCPFull name: "Open-Closed Principle" Open-Closed PrincipleNote: It is open to extensions and closed to

Ispoweroftwo determines the power of 2, and ispoweroftwo determines The first result is: Public bool IsPowerOfTwo (int n ){If (n Return (n & (n-1) = 0 );} Analysis: The power of 2 can be calculated using the Left shift ( N & (n-1): Change the

1. What is the implementation of generics in Class and C, Reading directory1. What is generic?II. Implementation of generic in Class in C #　　　　　　　　　　　　 I:What is generics? We need a data type during programming, but at the beginning we were not

CLR via C # note 6,One benefit of object-oriented programming is "code reuse", which greatly improves development efficiency. If so, a class can be derived to inherit all the capabilities of the base class. The derived class can customize the

[C #] 4-9-square lattice Algorithms The netizens in the group threw out such a question.My algorithms: Static void Main (string [] args) {/** a + B-9 = 4 * +--* c-d * e = 4 */*-* f + g-h = 4 * | | * 4 4 4 **/int flag = 50; for (int a = 0; a 0,

Use reflection and features to simplify code and reflection features to simplify code Suppose there is a Student) /// /// Student class /// public class Student {// /// name /// private string name; public string Name {get {return name;} set

Queue and Stack in. NET,. NETQueueStack 1. ArrayList class The ArrayList class is mainly used to process elements in an array. In ArrayList, Add, Remove, RemoveAt, and Insert methods are used to operate stacks. The Add method is used to Add an

A few small examples of linq and a small example of linq Private void button#click (object sender, EventArgs e) {int [] numbers = new int [7] {0, 1, 2, 3, 4, 5, 6 }; var result0 = from num in numbers where (num % 2 = 0) select num; foreach (int n in