how to get data from database

private void Formlug_load (object sender, EventArgs e){Fieldlistlug.clear ();//Field cleanupDI = Double. Parse (tbdn.text);//di equals value in Tbdn force conversion of value to double typeString TypeName = "Y_support_lug_4712_3_2007_type";//define

The examples in this article describe the ASP.net connection database and the method of obtaining data. Share to everyone for your reference, specific as follows: * Usage of the Connection object Sqlconnection,sqlcommand,sqldataadapter* How to

First, prefaceBig Data technology has been going on for more than 10 years, from birth to the present. The market has long been a company or institutions, to the vast number of financial practitioners, "brainwashing" big data the future of good

In the actual development of iOS, we often use core data as the first choice for storage. But when dealing with a large number of complex data values and correlating data, this has to be achieved using a relational database. For example, a

MySQL常用指令，java，php程序员，数据库工程师必备。程序员小冰常用资料整理MySQL common commands (for reference)The most common display commands are:1. Display the list of databases.show databases;2. Display the data table in the library:Use MySQL;Show tables;3, display the

Information A 1, stop the database server, the database MDF files and LDF files copy backup a copy 2, start the database server, delete the suspect database 3, only with the backup of the database MDF file attached to the database,

Before you start, say the online, most of the blog about this aspect or something else, on my own feelings, the first is not detailed, the second language can not be very good for beginners to understand.The title of my blog is used three sentences,

In this example, the effects are as follows: when selecting a programming language from the select drop-down box, different function API descriptions are requested asynchronously based on different options. For more information, see Ajax greatly

In the previous period, the company's main database was cut into business and reporting libraries, and the business Library was replication to the report library in real time. This project was launched to improve the performance and maintainability

Introduction to meta-data The most common definition of metadata (metadata) is "structural data about data," or, more simply, "information about data," which can be viewed as metadata in everyday life, such as illustrations, library catalogs, and