catch exception ex throw ex

Well, in the "tidal" switch from thin clients to fat browsers, it's necessary to use JavaScript to invoke various services in the background. It is necessary to learn such content by using WCF services for all the products that are maintained by

OracleConnection Sqlcon = new OracleConnection (); try {sqlcon.connectionstring = connection; if (sqlcon.state = = connectionstate.closed) {Sqlcon.open ();} OracleCommand mycommand = new OracleCommand (); Mycommand.commandtimeout = 3600;

Data | database using System; Using System.Data; Using System.Data.SqlClient; Using System.Data.SqlTypes; Using System.Windows.Forms; Using System.Collections; Namespace Database { A summary description of the Database. public class

Using System.IO;Using System.Drawing.Imaging; private void Button1_serverclick (object sender, System.EventArgs e){Graphics G=null;System.Drawing.Image Upimage=null;System.Drawing.Image Thumimg=null;System.Drawing.Image Simage=null;Bitmap Outputfile=

One of the limitations that developers encounter when building a business site is that they can only use the browser as a user interface. For example, in many cases, users want to retrieve information from the server after performing certain actions,

from:http://blog.csdn.net/tjvictor/article/details/4370771XML indexes in SQL Server fall into two categories: primary XML indexes and secondary XML indexes. The secondary XML index is divided into: PATH secondary XML index, VALUE Secondary XML index,

First, refer to the Oracle namespaceSystem.Data.OracleClient;Second, connect the database code: Private DataTable SqlHelper (string commadtext) { try { //through configuration file, connection

Using system;using system.data;using system.data.sqlclient;using system.text;namespace ConsoleApplication1{Static Class Test8 {static SqlConnection cn; Static SqlTransaction tr; public static void Test () {String dbConnection =

Original: C # ASP. NET CSV file Import DatabaseUsing System;Using System.Collections.Generic;Using System.Text;Using System.Data;Using System.Data.OleDb;Using SYSTEM.DATA.SQL;Using System.Data.SqlClient;Using System.IO;Namespace

Using System;Using System.Collections.Generic;Using System.Data;Using System.Linq;Using System.Reflection;Using System.Web;Using System.Web.UI;Using System.Web.UI.WebControls;Using Contract.domain;Using Devexpress.data;Using Framework;Using Holworth.

The business needs to copy data from one database to another. Of course, you can copy data one by one, but the two databases have the same table structure. It is better to operate DataSet to copy data to another database in batches, regardless of

This article mainly describes the IBM DB2 data replication and migration methods. The following methods have been tested in the Environment IBM x346, 3.2G × 2, 4G, RAID 1, in DB2 V8.2.4, Win2000 Adv Server, and DMS tablespaces, the data load speed

. NET Ajax request data submission instance,. netajax request instance This document describes how to submit. NET Ajax request data. Share it with you for your reference. The details are as follows:Copy codeThe Code is as follows: " %> ajax request

The difference between throwing an exception using throw and throw ex in C,   Generally, we use try/catch/finally statement blocks to catch exceptions, as we mentioned here. What is the difference between throw and throw ex when an exception is

Step One: Demand analysisMy goal is to use the MVC framework for simple login verification. Enter the user name and password from the client. It is then passed to database validation. If the database exists with this user name ID and password, the

Template page enterprise Hall-ASP. NET static page generation technology static master table page ID Name {Id} {Name} Web. config file Note: In addition to manually editing this file, you can also useWeb management tools to configure

These two days, I have had a deep understanding of ado.net. By the way, I would like to write some code practitioners to take a review note.I. Brief introduction to the five common objects of ado.netSince ado.net is mentioned, five common objects

Version: NeatUpload-1.2.32, for file upload. Large files can be transmitted.1. In the VS Toolbox, right-click on "Select Items" ... Add Brettle.Web.NeatUpload.dll to the toolbox.You can see the appropriate controls in the Toolbox after you add them.2

NHibernate building an ASP. NET MVC application what is NHibernate?NHibernate is an object/relational database mapping tool for the. NET environment. The term object/relational database mapping (Object/relational mapping,orm) represents a technique

Recently, I used to create thumbnails for images, which involves system. many drawing classes, but the final effect is not very satisfactory. Compare the thumbnails generated by PHP and Java ,. the thumbnail generated by. Net has a low quality, and