.Net Core

Add, traverse, and remove Common Set OperationsNamespace System. CollectionsArrayList Variable Length array, using an array similarProperty Capacity CountMethodAdd () AddRange () Remove () RemoveAt () Clear ()Contains () ToArray ()A set of Hashtable

Copy codeThe Code is as follows:Using System;Using System. Collections. Generic;Using System. Text;Using System. Net;Using System. IO;Namespace ftponload{Class Program{Static void Main (string [] args){// File Upload MethodOnload ("D: // outPut.txt "

Source: RegExLib.com Regular Expression Cheat Sheet (. NET) Metacharacters Description ^ Start position of matching string $ End position of matching string . Match any single character

SQLPager Stored ProcedureCopy codeThe Code is as follows:ALTER proc [dbo]. [SqlPager](@ TblName varchar (255), -- table name (Note: Multiple table links are allowed)@ StrGetFields varchar (1000) = '*', -- the column to be returned@ OrderfldName

Copy codeThe Code is as follows:Using System;Using System. Collections. Generic;Using System. Linq;Using System. Web;Using System. Drawing;Using System. IO;Namespace web Layer 3{/// /// Display the thumbnail of the requested image, in the maximum

So far, we have discussed storing cache in ASP. NET output cache (memory and hard disk), and browser cache. Another common practice for large websites is to deploy the cache on the reverse proxy server, this type of cache is generally called reverse

Today we will introduce the ajax calendar control provided by Microsoft. This control uses ajax effects and sets events and effects through front-end js and style. Rich functions and styles are essential for website design and mis development.By

But many people likeCopy codeThe Code is as follows:Protected void Page_Load (object sender, EventArgs e){} To write code, or even write in some buttons to determine whether a session exists ~~Of course, this can achieve the effect. The problem is:

First look at ASPX:Copy codeThe Code is as follows: Petter Liu demo Then write this in the Sever:Copy codeThe Code is as follows:/// /// Handles the Load event of the Page control./// /// The source of the event. /// The instance containing the

After studying the problem for one afternoon, I finally found the answer from some online materials because the data source for manual programming is not maintained in ViewState. Once PostBack is triggered, the content of the data source is lost.

Copy codeThe Code is as follows: No title page quick logon to common mailboxes select your post office @ sina.com @ 163.com @ sohu.com @ ChinaRen.com @ 163.net @ Tom.com @ 21cn.com @ yahoo.com.cn @ 126.com @ 263.net @ eyou.com @

Methods To include files in ASP. NET include:1. 2. 3. The StreamReader object writes the included files to the HTTP Content stream.// Me: I can also use include in asp.net on the Internet ..What is the difference between include and Server.

1. Job Environment  Development Environment:Vs2005/vs2008Database:Sql2005 Excel: 2003 First InVsJoinComComponent (of course, you can also add the excel component under. net ): After that, the following three dll files will be added to the

Copy codeThe Code is as follows:Protected void btnSort_Click (object sender, EventArgs e){String array1 = txtSort. Text. Trim ();String [] array21 = array1.Split (',');Int dxiao = array21.Length;Int [] array = new int [dxiao];Int temp = 0;For (int I

The code for the content exported by the GridView is roughly as follows:Response. Clear ();Response. Buffer = true;Response. Charset = "GB2312 ";Response. AppendHeader ("Content-Disposition", "attachment; filename =" + fileName + ". xls ");Response.

NO.1 params A keyword that allows a method (function) to have variable parameters.Principle: no other parameters are allowed after the params keyword in the method declaration, and only one params keyword is allowed in the method declaration.Example

1. Add Silverlight-enabled WCF service to the ServerCopy codeThe Code is as follows:[ServiceContract (Namespace = "")][AspNetCompatibilityRequirements (RequirementsMode = AspNetCompatibilityRequirementsMode. Allowed)]Public class

In the future, I will write out what I learned during this period and share it with you. This article is also a note at work. I hope to give some help to my friends who have encountered the same problem.In the development work, because CheckBoxList

1. Save the image to an XML fileCopy codeThe Code is as follows:/// /// Save the image to an XML file/// Private void UploadImageToXml (){/// Get the file name to be uploadedString strFilePathName = loFile. PostedFile. FileName;String strFileName =

How can we implement asynchronous file refresh? At present, there are many articles on the Internet to solve this problem, but a lot of javascript will be used. Due to my low coding skills, so there is no such reason as HD, but iframe seems to be