string empty

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Methods and differences of empty string Initialization

(1) null The null keyword is a text value that does not reference any object's null reference.Null is the default value of the reference type variable. Then, only the referenced variable can be null. If int I = NULL, it is not possible because Int

[Sorting] Asp.net large file upload Solution

In this project, a large file upload is used, and the number of files to be uploaded is more than 100 MB.The component found that many of them used two controls: aspnetupload 2.0 and Lion. Web. uploadmodule. In addition, they thought about its

Asp.net dynamically sets the title and meta tags of the page

// Set keywords and page descriptionsPublic void setmeta (string key, string des){HtmlmetaKEYWORDS = new htmlmeta (), // keywordsDescription = new htmlmeta (); // descriptionKeywords. Name = "keywords ";Keywords. content = key; Description. Name =

Asp.net uploads large files

Using system. Web;Public class upload{Public void saveupload (){Httpapplication application1 = sender as httpapplication;Httpworkerrequest request1 = (httpworkerrequest) (iserviceprovider) httpcontext. Current). getservice (typeof (httpworkerrequest

Httpworkerrequest for uploading large files to Asp.net

Httpworkerrequest can be used to upload large files I have also uploaded files before, but they are all small files, which cannot exceed 2 MB. Upload more than MB. I couldn't find any information to study it. For web-based file uploads, FTP and HTTP

Some problems encountered when writing template parsing are very useful for delegation.

Template tags are mainly divided into two categories: topic tags and Article Related labels. Because they belong to two tables and correspond to different entity classes, some problems occur when you replace the template tag. paste the intent class

[C #] QQ message automatic sending code

1. Prepare windows APIs, which are developed in C #. Therefore, prepare windows APIs encapsulated in C. You can download it at the following address: C # Windows API encapsulated by Version C, simplified version + added version, source

C # How to implement voice Functions

First, install the SpeechSDK5.1 Development Kit and the SpeechSDK5.1 Langague Pack (both Chinese and English) Language Pack. However, VS2010 is compatible with the com component that comes with SpeechSDK5.0. Here are four methods: When reading aloud,

Implementation of des encryption and decryption in PHP and. net

In php5.x, add the php extension php_mcrypt. PHP version: Copy codeThe Code is as follows: class STD3Des { Private $ key = ""; Private $ iv = ""; /*** Construct and pass two keys and IV that have been base64_encode** @ Param string $ key* @ Param

Batch Account login test function implementation

WaitiN is used to write a simple automated login test. It can use a small amount of code to perform login testing for batch accounts. The Code is as follows: Copy codeThe Code is as follows: using System; Using System. Collections. Generic; Using

Common operations notes for IO in C #

Creating a File 1 private void Button1_Click (object sender, EventArgs e) { if (TextBox1.Text = = string. Empty) { MessageBox.Show ("File name cannot be empty"); } else

Common Regular Expression formulas

Regular expressions, which may be used later, although the regular expressions understand some, but when used, the take doctrine is relatively faster.First, a cursory look at the regular expression basic syntax, if it is not about the syntax, you

Three-level linkage of provincial and municipal level implemented with DropDownList

This is a DropDownList implementation of the provincial and municipal level three linkage, record the/asp:ScriptManager>                           *  Select a region:                                                                                    

Automatically complete JS class (pure JS, Ajax Mode)

1. encapsulated JS files//************************************** ******************// Creation date:// OPERATOR: oloen// Content Description: Automatically complete the JS class// Usage:// Var auto = new autoComplete (Client ID );// Auto. Init

Silverlight 2 (beta1) data Manipulation (2)--Data crud operations with ASP.

Front Desk InterfaceBackground code//Button eventvoidsaveButton_Click (ObjectSenderRoutedEventArgsE) {if(UserName.Text.Trim () = =string. Empty) {Errmessage.foreground =NewSolidColorBrush(Colors. Red); Errmessage.text ="Please enter the user

Unity3d SerialPort Treatment

usingUnityengine;usingSystem.Collections;usingSystem;usingSystem.Threading;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.IO.Ports;usingSystem.Text.RegularExpressions;usingSystem.Text; Public

Ajax+ashx Perfect implementation of input file upload files

1. input file style does not meet the requirementstype= "file" value= "Browse"/>IE8: F Irefox: Chrome:   2. Input File Upload button beautificationCss:. File{position:relative;Background-color:#b32b1b;Border:1px solid

Use HttpWebRequest and HttpWebResponse to obtain web page data

HttpWebRequestThe HttpWebRequest class supports the attributes and methods defined in WebRequest and the additional attributes and methods that allow users to directly interact with servers using HTTP.Use the System. Net. WebRequest. Create method

The realization method of C # speech function _c# Tutorial

The first thing to do is to install the SpeechSDK5.1 Development Kit and the SpeechSDK5.1 Langague pack (both English and Chinese), although VS2010 is a COM component with SpeechSDK5.0 in it. A brief four methods: When reading aloud, use

Automatic completion of JS class (pure JS, ajax mode) _javascript skills

One, the package JS file //******************************************************** Date Created: 2009-03-10 Author: Oloen Content Description: Automatic completion of JS class Usage: var auto = new AutoComplete (client ID); Auto. Init (document.all.

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