wfm ht

Previously, our shopping cart was implemented in the database mode, and database operations were required for each purchase, which greatly affected the efficiency. Now we use hashtable and session to implement shopping cart, which saves database operations and greatly improves efficiency. 1 private void datagrid1_itemcommand (Object source, system. Web. UI. webcontrols. datagridcommandeventargs e) // assume that the previous command is a linkbutton named buy.2 {// key: Create and add a shoppi

: 123456789101112131415161718192021222324252627282930313233343536373839 Using System ; Using System. Collections ; // This namespace must be introduced when file uses hashtable. Class Hashtable { Public Static Void Main( ) { Hashtable HT = New Hashtable ( ) ; // File to create a hashtable instance Ht. Add ( E, E ) ; // Add a keyValue pair

1. the hash table (hashtable) is described in. in the. NET Framework, hashtable is system. A container provided by the collections namespace is used to process and present key-value pairs similar to the keyValue. The key is usually used for quick search, and the key is case sensitive; value is used to store the value corresponding to the key. In hashtable, keyValue pairs are of the object type, so hashtable can support any type of keyValue pairs. 2. Add a key-Value Pair hashtableobject to the ha

Hashtable: a set of key/value pairs. These key/value pairs are organized according to the hash code of the key. In hashtable, keyValue pairs are of the object type, so hashtable can support any type of keyValue pairs. Operations on the hash table include: 1. Add a keyValue pair 2. traverse the hash table 3. Sort hash tables 4. Determine whether a hash table contains a specific key. The return value is true or false. 5. Remove a keyValue pair 6. output values in the hash table 7. Remove all eleme

HTML5-based WebGL combined with BOX2DJS physics engine application In this article, we present A * search algorithm 3D pathfinding effect based on the HT for Web, which we will use HT for Web 3D to present the collision effect of the Box2djs physics engine, in fact Box2djs is just two dimensional plane collision physics engine, But also through the 3D rendering can give people a more intuitive experience o

Jszip is a javaScript tool that can create, read, and modify. zip files. In a Web application, you need to get resources from a Web server, and if you can merge all of your resources into a single. zip file, you only need to make one request at a time, which reduces the pressure on the server and speeds up the rendering of your Web application. Discuss how the next jszip can be combined with the HT topology application today. Let's take a look at this

. Forms. Label label2;Private System. Windows. Forms. GroupBox groupBox3;Private System. Windows. Forms. ComboBox local;/// /// Required designer variables./// Private System. ComponentModel. Container components = null; Public Form1 (){//// Required for Windows Form Designer support//InitializeComponent ();This. Init (); //// TODO: add Any constructor code after InitializeComponent calls//} Private void Init (){DataTable ht = new DataTable ();DataCol

. Forms. picturebox imgsource;Private system. Windows. Forms. picturebox imgobject;Private system. Windows. Forms. picturebox imgwater;Private system. Windows. Forms. Button btn_water;Private string sourcefile;Private string waterfile;Private string SaveFile;Private system. Windows. Forms. textbox Alpha;Private system. Windows. Forms. Label label1;Private system. Windows. Forms. Label label2;Private system. Windows. Forms. groupbox groupbox3;Private system. Windows. Forms. ComboBox local;/// ///

(this. Contains (Key)) {nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; return this. Objarr[key]; nbsp; nbsp; nbsp; nbsp;} nbsp; nbsp; nbsp; nbsp; else {nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; throw Error (Ha Shtable not cotains the key: "+ String (key)"; Script error nbsp; nbsp; nbsp; nbsp; nbsp; nbsp;//return; nbsp; nbsp; nbsp; nbsp;} nbsp; nbsp;} nbsp; nbsp; nbsp;//removal nbsp; nbsp; this. Remove = function (key) {nbsp; nbsp; nbsp; nbsp; if (this. Contains (Key)) {nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; Delete

key: HashtableObject. Contains (key ); The following console contains all the preceding operations: View Code Using System; using System. Collections; This namespace must be introduced when file uses Hashtable. Class hashtable { Public static void Main () { Hashtable ht = new Hashtable (); File to create a Hashtable instance Ht. Add (E, e ); Add a keyvalue pair Ht