catch exception ex

Continued. Net-based LINQThe three-tier architecture of SQL is developed. The following describes the common code used by each layer to query, insert, delete, and update databases. Dal Layer Code // Dalmanager. CS Using system. Data. LINQ;Using

Using system;Using system. configuration;Using system. Data;Using system. Data. sqlclient;Using system. collections; Namespace cfchina. Tools. Database{/// /// General database/// Public class database{ Private string connstr = NULL; /// ///

Throw throws/passes an exception by using the throw statement in the Catch Block. exceptions that can be changed. For example, we can throw a new exception. Throw statements have various types and are necessary. ExampleFirst, let's take a look at

What I wrote in the previous two years is now sorted out! In the past, the company needed to do WebService and encrypted the soapheader of WebService, So we wrote this stuff! Key management is required to use this class! Data Encryption is often

Even if I have suo on the internet, I still collect it. If you don't want to see it, you can always check it !? [Java-mysql] Void gomysql ()...{Java. SQL. Connection conn = NULL;String drv1, url1, user1, psw1;Drv1 = "com. MySQL. JDBC. Driver

Class for resumable upload and download of Files written in C # This example uses C # upload and Servlet for receiving. C # resumable download of files as clients and servlets as servers There is debugging failed, mail me:

Because I have always wanted to develop a software, so I am working hard! The structure of the INI file is a text file that is arranged according to the characteristics. Each INI file is very similar and consists of several sections. Under each

1. First, let's take a look: 2. ext code Copy codeThe Code is as follows: // Ext. namespace ('xqh. ExtJs. framework '); XQH. ExtJs. Frame. RoleManage = function (){ This. init (); }; Ext. extend (XQH. ExtJs. Frame. RoleManage, Ext. util.

Recently, the window service program was used in the project. It has never been used before and is unfamiliar. It took two days to learn and write a simple service. However, when creating the installation program, many materials on the Internet may

Problem: First, set a simple server listener1 delegate void SetTextEvent (Control ctl, string text ); 2 void SetTextLine (Control ctl, string text) 3 { 4 if (ctl. InvokeRequired) 5 ctl. Invoke (new SetTextEvent (SetTextLine), new object [] {ctl,

C # simple RSS reader. The modification was completed by the VB version. Thank you for your technical support! Source code: Using System; Using System. Drawing; Using System. Collections; Using System. ComponentModel; Using System. Windows.

Velocity is a Java-based template engine ). It allows anyone to simply use the template language to reference objects defined by Java code. When velocity is applied to web development, the interface designer can develop a web site following the MVC

Upload a file in two steps: 1. Page Multipart/form-Data"Name =" form1 "id =" form1 ">   upload an image & nbsp;   2. Action Public class addhomead extends actionsupport { Private ihomeadserver homeadserver;Private file IMG;Private string

Package Dom; Import java. Io. file;Import java. Io. fileoutputstream;Import java. Io. filewriter;Import java. util. iterator;Import java. util. List; Import org. dom4j. Attribute;Import org. dom4j. Document;Import org. dom4j. documenthelper;Import

　　, he "sync" is not this "sync"--we say that the shared data synchronization in Java (synchronized), he "sync" is not this "sync"--we say that the shared data synchronization in Java (synchronized)For each request, host generates a thread that is

Package Rgy.com.udp3;import Java.awt.font;import Java.awt.gridlayout;import java.awt.event.actionevent;import Java.awt.event.actionlistener;import Java.awt.event.keyadapter;import Java.awt.event.keyevent;import Java.io.File ; Import

C # test Code:usingSystem;classprogram{Static voidA () {Try{Console.WriteLine ("throwing an exception"); Throw NewException ("did you catch it?"); } finally{Console.WriteLine ("a.finally ()"); } } Static voidB () {Try{C ();

ASP tutorial. NET HTTP Get cookies Cookies, sometimes in their plural form, are the data (usually encrypted) that some Web sites store on the user's local terminal in order to identify the user and perform session tracking. defined in rfc2109

Detect if Office is installed and get installation path and installation version The code is as follows Copy Code #region Detect if Office is installedDetecting whether Office is installedpublic static bool

A lot of times we copy an object instance A to instance B, and when we do something with instance B, we modify instance B to make sure that the modification to B does not affect the normal use of a, you need to use a deep copy. I found some deep