C#

One, the local database connected with VS2013using System.Data.SqlClient;First define a connection string Public Static string " server= (localdb) \\projects;initial catalog=test;integrated security=true ";Where: server is the name　　　ilitial Catalog

public static bool Sendmailuse (){String host = "smtp.163.com";//mail server smtp.163.com means NetEase mailbox serverString userName = "[e-mail protected]";//Sender Accountstring password = "a96606";//send-side password (password after this client

/// ///calculates a MD5 hash from the given string and uses the given///encoding./// /// Input String/// Encoding Method/// MD5 Computed String Public Static stringCalculateMD5 (stringInput, Encoding useencoding)

Versions 2003 and 2007 differ:Hssfworkbook (2003)Iworkbook (Version 2007)After writing, there will be a problem, the export will be error "stream is closed."Npoi when you produce an. xlsx file, when you use Book.write (MS), the stream is closed,

is completely basic, novice can feel free to see, Daniel can close browse page, haha.Before starting the introduction of the Socket to supplement the basic knowledge, on the basis of understanding the network communication will be logical, of course,

C # method of program optimization,1. Use properties to replace accessible Fields 1... NET data binding only supports data binding. Using attributes can benefit from data binding; 2. You can use lock to add multi-thread support in the get and set

C # Write txt text (code example ),C # Write txt text (code example) // Required namespace using System. IO; using System. Text; // write txt, method 2. Use Stream to Write public static void txtWrite () {// when there are too many contents to

When C # is used for development, the DataGridView display row numbers in HeaderCell, When using C # To develop the WinForm program, the DataGridView is a table data control that we often use. When using this control, you often need to display the

C # basic matrix Math Library tutorial, First, start SimpleMatrix. cs and define the total number of rows, total number of columns, and all data (double type) using System;using System.IO;namespace NeuralDefs.Matrix{ public class SimpleMatrix :

Alignment of output text and alignment of output text In this blog, you can find an output character on the right alignment http://www.cnblogs.com/insus/p/7953304.html It teaches you how to align string output to the left or right.The method in

InvokeRequired, Invoke, invokerequired In multi-threaded applications, different threads are involved in accessing the same control.# Prohibit cross-thread direct access to the control.When a control is created, it records who created it, that is,

[C #] Use Gembox. SpreadSheet to write data and charts to Excel,   This article is an original article and the source code is the original code. For example, repost/copy the original code, please clearly mark the original name, author, and URL on

Reconstruction Method-Simplified function call [3], reconstruction method-Simplified Function Total returned directory Directory of this section Replace Parameter with Explicit Methods (Replace parameters with Explicit functions) Preserve Whole

Select a travel mode based on the actual situation. When you go out on Sunday, you can walk, ride, or take a bus.Each person chooses a different method based on factors such as person or environment.A simple factory is compatible with this type. You

Simple use of the Redis client ServiceStack. Redis, Download ServiceStack. Redis in nuget, but a problem occurs after running: Exception: An Exception is thrown when the "Com. JinYiWei. Cache. RedisHelper" type initial value is set.System.

C # Reading xml and DataTable conversion, 1. Methods for reading xml files /// /// convert xml to Datable /// public static DataTable XmlToDataTable (string xmlStr) {if (! String. isNullOrEmpty (xmlStr) {StringReader StrStream = null;

LINQ Learning Series ----- 1.3 extension method, linq ----- 1.3 This article continues with the source code of yesterday's Lambda expression. Yesterday I spoke about Lambda expressions. This article describes the extension methods. These two points

Simple implementation of C # compatibility with Javascript, This article introduces a newly implemented plug-in for c # interaction with js. The requirement comes from a discussion with a friend. The main dialog is as follows: Friend: Recently I

C # implementation of the eight major sorting algorithms (1 ),Introduction Sorting algorithms are the most commonly used algorithms in programming. Currently, there are eight mainstream algorithms. The average time complexity is from high to

C # Simple Method for retrieving the Visio Model Information, A recent project requires the export of Visio drawings. Because it is a construction project, you need to set parameters for wall, door, room, and other information. Take the wall as an