catch exception ex

Because the project needs more data query, the number is large, so to use the cache, in the case of non-reference Redis, only one speed of ascension1. Cache classpublic class Cache {Private String key;//Cache ID, storing values to HASHMAP based on

Objective The previous article describes some of the ways to implement Ajax on the WebForm platform and implements a base class. This article we look at an open Source component: Ajaxpro. Although this is a relatively old component, but the

Fastdfs is a lightweight open source Distributed File systemFastdfs mainly solves the problem of large capacity file storage and high concurrency access, and realizes load balance in file access.FASTDFS implements a software-style raid that can be

Import java.sql.Connection; Import Java.sql.DriverManager; Import Java.sql.ResultSet; Import java.sql.SQLException; Import java.sql.Statement; public class DBTools {//defines a method that is used to get a "new" Connection object public static

On the Internet to find a number of examples are the client must first send a message, the server to reply to a message. This approach is inconvenient for the server to actively send messages to clients. Research, found that the main reason is

This paper introduces the design and implementation of the core functions of panda Orm (that is, to add a simple annotation to the entity for the function of adding and checking operations). An introduction to the whole idea 1, first understand the

Objective:For project reasons, the client to be implemented is too far away from the author (Itbaby) to consider providing an online upgrade of the software. How do we do that? Let's talk about the idea first. Ideas:First implement web-side

Method One: In Oracle, fields for LOB (Large object, large objects) types are now used more and more. Because of this type of field, large capacity (up to 4GB of data), and a table can have more than one of these types of fields, is flexible,

/// ///Data Layer/// Public Partial classGasbottles:igasbottles {#regionIgasbottles Members PublicModel.gasbottles Getmodel (intGasbottlesid) { vardb =Dbcontext.lgscmsdatacontext; Try { varGS = db.

Net website development knowledge point 1This section introduces Form verification, the use of FCKediter controls, and the use of paging controls. This chapter introduces some simple knowledge points and master these knowledge to make a simple news

Summary of Socket-based simple chat tools (original) and socket chat tools During this time, I can't help but try to write a summary to encourage myself to study hard and write poorly. Please advise me! The following is a simple program for sending

First, I declare that my summary was intentionally written in this way. If you read the summary, please make me laugh three times: Hahaha ~~ However, since you have already come in, you may wish to continue looking at it ~~ Event background I have

Yesterday, the company happened to use savefiledialog () to export XML to the hard disk. We accidentally selected a directory with only the read permission. After prompting that there is no write permission, after a while, an unhandled exception is

Many of us use XML files in projects, whether it is parameter configuration or data interaction with other systems.Today, let's talk about using dom4j in Java to operate XML files.The package we need to introduce:// PackageImport java. Io.

1. Drag a SerialPort named sp. 2. The key lies in the processing of datareceived events. . The baud rate setting is consistent with the meter setting: 1200 . Readbuffersize can be set to the Data Length of the communication protocol: 12 Note the

Using system; Using system. Collections. Generic; Using system. text; Using system. Data. sqlclient; Using system. configuration; Using system. Data;   Namespace MSSQL database operations { Public class sqlserver {   Sqlconnection _ con = new

Using system;Using system. text;Using system. collections;Using system. Collections. Generic;Using system. net;Using system. net. Sockets;Using system. Threading;Using system. runtime. interopservices;Using system. IO; Namespace common.

Original article: http://www.codeproject.com/csharp/SingleInstanceApplication.aspTranslation: Anders LiuSource: http://www.cnblogs.com/AndersLiu/archive/2007/07/09/811354.html Introduction This article solves the following problems:1. Create a

Example The following example shows the Snapshot isolation behavior when modifying data. TheCodePerform the following operations: Connect to the adventureworks sample database and enable Snapshot isolation. Create a table named

I wrote a paging storage process two days ago. Today I also wrote the front-end and posted the code to share with you. Please kindly advise me ~ Forecolor = "#333333" gridlines = "NONE" width = "650px" onrowcancelingedit =