c# code generator from database

In practice, you sometimes need to import a large amount of data into the database and then use it for various program calculations. In this experiment, we will use step 5 to complete this process and record the time spent by various methods in detail. The tools used in this experiment are VS2008, SQL server 2000, and SQL server 2008. 1 million pieces of data are imported into SQL 2000 and SQL 2008 respectively using the 5 method. The experiment envir

){Conn1. Close ();Conn2. Close ();Return "no data";}} Fill DataSet2if (dataset2!=null){Adapter2. Fill (DataSet2, tabstring);} Copying datafor (int i = 0; i {Dataset1.tables[0]. Loaddatarow (Dataset2.tables[0]. Rows[i]. ItemArray, false);} To display a dataset transformation in its associated target databaseSqlCommandBuilder cb = new SqlCommandBuilder (adapter1);Adapter1. Update (DataSet1, tabstring);Cb. RefreshSchema (); Return "TABLE" + tabstring + "Copy succeeded!" ";Conn1. Close ();Conn2. Clo

Yesterday, I spent half a day writing the Java code about the pure IP database in lumaqq. CodeTranslated into C # code, implementing the function of querying pure IP database in. net. You can now Query IP addresses, addresses, and IP addresses. The IP address-> address quer

Label:Always use C code to connect MySQL database, today with valgrind detection, found that there is a memory leak problemThe code is as followsmysql*== mysql_real_connect (connection, ...); The mysql_query (...); Mysql_close (connection);On-line search, find the following solutionshttp://pipal.iteye.com/blog/903506Ad

This article describes the actual application code of C # connecting to the MySQL database. If you are interested in the actual operation steps of C # connecting to the MySQL database, you can get a better understanding of the following articles. { String sqlstr = "se

If the data in Excel is as follows: The database is built as follows: Where ID is a self-added field: Code: Copy Code code as follows: Using System; Using System.Collections.Generic; Using System.Linq; Using System.Web; Using System.Web.UI; Using System.Web.UI.WebControls; Using System.Data;

(sql_string, Get_conn ()); String data = Convert.ToString (Db_cmd.executescalar ()); return data; } catch (Exception e) {error.database_error_action_the_sql = E.message.tostr ING (); return null; } } }}The source code for the wrong (error) class It refers to IS as follows:Namespace test{ class Error {public static string database_error_select; public static string Databa

Code: # export decstdlib # export destring # export deusrlocal#demysqlmysql. h: location of the mysql header file installed in usingnamespacestd; stringhost database address; stringuser username; add stri C and C Code: # Include # Include # Include "/usr/local/in

= System.currenttimemillis (); Logger.debug ("Rrs.getrunonslave ()-" + Rrs.getrunonslave ()); for (final Routeresultsetnode node:rrs.getNodes ()) { Backendconnection conn = session.gettarget (node), if (Session.tryexistscon (conn, node)) {Logger.debug (" Node.getrunonslave ()-"+ Node.getrunonslave ()"); Node.setrunonslave (Rrs.getrunonslave ());//Implement master/ Slave annotation Logger.debug ("Node.getrunonslave ()-" + Node.getrunonslave ()); _execute (conn, node);} else {//Create new Connect

Assume that the data in Excel is as follows: The database creation table is as follows: Here, Id is the auto-increment field: Code:Copy codeThe Code is as follows:Using System;Using System. Collections. Generic;Using System. Linq;Using System. Web;Using System. Web. UI;Using System. Web. UI. WebControls;Using System. Data;Using System. Data. OleDb;Using System. Configuration;Using System. Data. SqlClient

Tags: io os ar file data sp C on CTIprotected void Button1_Click (object sender, EventArgs e){///Backup method///SqlConnection conn = new SqlConnection ("server=.; DATABASE=AAAA; User Id=sa; Password=sa; ");SqlCommand CMDBK = new SqlCommand ();Cmdbk.commandtype = CommandType.Text;Cmdbk.connection = conn;Bak is the file name, and the rest is notCmdbk.commandtext = @ "BACKUP

Update NBearLite to v1.0.0.6 beta Fully supports SQL Server, Oracle, MySql, and PostgreSql database Stored Procedure Call code generation (C #/VB. NET) and various parameter types such as input, output, and return. Sub Query is supported. Save able/DataRow is supported. See: http://www.cnblogs.com/teddyma/archive/2007/07/20/825384.html Introduction Use nbearlite.

_dbdataadapterobj; } } }　　Examples of Use: Idbhelper sql = new SQLHelper ("Connection string"); Try { sql. Transstart (); The transaction begins with SQL. Execnonquery ("Execute SQL statement 1"); Execute (Add and revise) an SQL statement SQL. Execnonquery ("Execute SQL Statement 2"); Execute (Add and revise) an SQL statement DataTable dt = sql. getdatatable ("Query SQL statement 1"); Get some

C ++ implements strcat without using database functions (Code tutorial ). If you write it by yourself, you will not be able to read it. It is relatively simple. # Include

1 References System.Data.OracleClientPath:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.OracleClient.dll2 Installing the Oracle client1 website DownloadWin32_11gr2_client.zipNote the version and installation steps.2 configuration file Sqlnet.ora Tnsnames.oraPath: This machine is : D:\app\Administrator\product\11.2.0\client_1\network\admin\sqlnet.oraNote the installation path for Oracle clientContentSqlnet.ora:Sqlnet. Authentication_services= (NONE)NAMES. Directory_path= (TNSNames, Ez

In the development of C/s client, often to determine whether the client and server database is connected, that is, testing the connection function. A few simple lines of code, as follows: determine if the database is connected /// isconnected () { = new SqlConnection (connectionString);//con

VS. NET (C #) Database Interface: SqlCommand object asynchronous execution case code, vs.net When executing the Command object Command, you must wait until the Command is complete before other operations can be executed. For example, if you execute the ExcuteNonQuery () method, the application will remain blocked until the data operation is completed successfull

http://blog.csdn.net/ta8210/article/details/1582162 Related techniques: Connection pool reference count multi-threading C#.net Java Directory Introduction database connection pool (Connection pool) Working principle connection pool key problem analysis concurrent problem transaction processing connection pool allocation and release connection pool configuration and maintenance key issues reference count ho

the block will be executed,Therefore, the code must be guaranteed to close the connection after accessing the database.In the following code, the Command object is used to execute the SQL Statement of the query class and assign the result set to the Dataread object.Private Static stringstrconnect="data source=localhost;UID=sa;pwd=aspent;database=logindb"sqlconne

="+ServerName; ConnectionString+="; Pwd="+password; ConnectionString+="; Uid="+UserName; ConnectionString+=";D atabase="+DataBaseName; stringCommandString =string. Empty; CommandString+="select name from syscolumns where id=object_id ('"; CommandString+=TableName; CommandString+="')"; SqlConnection SqlConnection=NewSqlConnection (connectionString); SqlCommand SqlCommand=NewSqlCommand (CommandString, sqlConnection); SqlDataAdapter DataAdapter=NewSqlDataAdapter (CommandString, sqlConnec