AutoComplete控件的作用是根据用户在文本框输入的字符而做出相应的提示效果。 例如GOOGLE搜索提示功能。 属性列表: TargetControlID:要实现提示功能的控件 ServicePath:WEB服务的路径 ServiceMethod:调用数据使用的方法 CompletionSetCount:提示数据的
AutoComplete控件的作用是根据用户在文本框输入的字符而做出相应的提示效果。
例如GOOGLE搜索提示功能。
属性列表:
TargetControlID:要实现提示功能的控件
ServicePath:WEB服务的路径
ServiceMethod:调用数据使用的方法
CompletionSetCount:提示数据的行数
MinimumPrefixLength:用户输入多少字母才出现提示效果
CompletionInterval:从服务器获取数据的时间间隔,单位为毫秒
Enabled:是否启用自动完成功能,默认为TRUE
EnableCaching:是否启用缓存
实例解析一、读取数据库实现自动完成功能
autocomplete表:ID,NAME两个字段。
Default.aspx代码如下:
head runat="server">
title>AutoComplete的使用title>
head>
body>
form id="form1" runat="server">
div>
asp:ScriptManager ID="ScriptManager1" runat="server">
asp:ScriptManager>
div>
asp:TextBox ID="TextBox1" runat="server">asp:TextBox>
cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" TargetControlID="TextBox1" ServicePath="WebServiceAutoComplete.asmx" ServiceMethod="GetCompleteDepart" CompletionSetCount="2" MinimumPrefixLength="1"
CompletionInterval="1000">
cc1:AutoCompleteExtender>
form>
body>
WebServiceAutoComplete.asmx.cs文件代码如下:
using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
..
..
[System.Web.Script.Services.ScriptService]
public class WebServiceAutoComplete : System.Web.Services.WebService {
..
..
//定义数组
private static string[] autoCompleteWordList = null;
[WebMethod]
public string[] GetCompleteDepart(string prefixText, int count)
{
//如果数组为空
if (autoCompleteWordList == null)
{
DAL.DB DBOperator = new DAL.DB();
DataSet ds = DBOperator.GetDs("select name from autocomplete where name like '"+prefixText+"%' order by name");
//填充数组
string[] temp=new string[ds.Tables[0].Rows.Count];
int i = 0;
foreach (DataRow dr in ds.Tables[0].Rows)
{
temp[i] = dr["name"].ToString();
i++;
}
//将临时数组的内容赋给返回数组
autoCompleteWordList = temp;
}
string[] returnValue = new string[count];
returnValue = autoCompleteWordList;
//返回
return returnValue;
}
}

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Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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