tool to generate class from database table c#

(commandbehavior.closeconnection)) {CMD=NewSqlCommand (Cmdtext, Getconn ()); Cmd.commandtype=Cmdtype; Cmd.Parameters.AddRange (Parameters); Dt. Load (SQLSDR); } returnDT; } } } //The code snippet comes from:http://www.sharejs.com/codes/csharp/8134 This paper mainly uses ExecuteQuery and ExecuteNonQuery method to realize four different Access database methods.Using a using and try-----Catch-----Fin

Tags: indicates invalid blank strong enum Comment The base class willNotes: EF appears column name ' discriminator ' is invalid; The class is not joined to the database context and is also generated by the Data migration table; This problem usually occurs when a base class i

();d T. Rows.Add (DR);} This. Sgvtask.datasource =DT; This. Sgvtask.databind ();Reference Mode 3 Mapping method:First define some columns in DataGridView, set the datapropertyname of these columns to the column names of the related DataTable in the returned dataset of the database that the query gets.Specific property settings can refer to this blog post: C # DataGridView's Column Object properties discuss

Using system;Using system. configuration;Using system. collections;Using system. Data;Using system. Data. oledb;Namespace mydata{Public static class class_oledb_conn{// Public static string connstr = @ "provider = Microsoft. Jet. oledb.4.0; Data Source = database/*. mdb ;";Public static string connstr = mydata. properties. settings. Default. my_soft_oledbconn;// Open the

Recently, a general database sequence class (c #) is written. oledbsqloracleodbc data connection is supported,Sysbase and db2 interfaces are supported,If there are any errors, comments, or suggestions. Please contact me yu_nan88@126.comHttp://mail.gongyi.gov.cn/netdisk/download.php? User = zhaobin@gongyi.gov.cn id = 2712a90f0de399014bfbea6e697381a3 filename = L

(); Mysqlcon. Open (); Mysqlcommand mysqlcom=NewMysqlcommand (M_str_sqlstr, Mysqlcon); Mysqlcom. ExecuteNonQuery (); Mysqlcom. Dispose (); Mysqlcon. Close (); Mysqlcon. Dispose (); } #endregion #regionCreate a Mysqldatareader object/// ///Create a Mysqldatareader object/// /// SQL statements /// returns the Mysqldatareader object PublicMysqldatareader Getmysqlread (stringm_str_sqlstr) {mysqlconnectio

View code 1 Using System; 2 Using System. Collections. Generic; 3 Using System. text; 4 Using System. Data; 5 Using System. Data. sqlclient; 6 7 Namespace Goodsdal 8 { 9 /// 10 /// Database Operation class 11 /// 12 Public Class Sqlhelper 13 { 14 /// 15 ///

Tags: c#sqlite database sqlitehelper Using System; Using System.Collections.Generic; Using System.Data.SQLite; Using System.Data; Namespace Com.ZCWL.Rock.Helper {public class Sqlitehelper {private static string connectionString = String. Empty; Note: When you use this class, you need to reference the System.Dat

{ return false; } } }The reason for this class is that the code that operates these tables is similar in that it can even be used to make arbitrary tables, and instance classes can be identified with a feature class that corresponds to a field and column name.But that's too cumbersome to implement these simple tables is a bit overqualified, all first out of t

(C #. NET) Oracle Database Operations class "Turn" http://hi.baidu.com/di_wan/blog/item/e51effd61814bb2a06088b62.html Connect Oracle with OracleConnectionConfiguring in Web.config ------------------------------------------------------------------------------------------ public System.Data.OracleClient.OracleConnection CNN; Open a

1. Database operations: First create a simple table in the database SPJ2. Create a new ASP. NET Blank site3. Create a new Web Form named Showdata.aspxAdd two controls to the source interface: a button control and a GridView controlYou can see the design interface4. Create a new LINQ to SQL class named: DATACLASSES.DBML

StaticObject ExecuteScalar (stringsql//use ExecuteScalar (), additions and deletions if successful, an object is returned, or a null is returned; the { theObject OB =NULL; the - Try in { the if(Conn. state = =connectionstate.closed) the { About Conn. Open (); the } theSqlCommand cmd =NewSqlCommand (SQL, conn); theOB =cmd. ExecuteScalar (); + } - Catch the {Bayi re

Recently, a general database sequence class (c #) is written. oledbsqloracleodbc data connection is supported,Sysbase and db2 interfaces are supported,If there are any errors, comments, or suggestions. Please contact me yu_nan88@126.comHttp://mail.gongyi.gov.cn/netdisk/download.php? User = zhaobin@gongyi.gov.cn id = 2712a90f0de399014bfbea6e697381a3 filename = L

'********************************* ' * CLASSNAME:ADOXDBOPR ' * Producer: Liu Xiaoyi ' * Role: Using ADOX for database operations ' * Version: 1.0 ' *www.jb51.net cloud-dwelling community '********************************** Class ADOXDBOPR Dim objadox Private Sub Class_Initialize Set objadox=server.createobject ("ADOX. Catalog ") End Sub Public Property Let Connection (objconn) Objadox.activeconnection=ob

();bindingnavigatoraddnewitem.enabled = false;bindingnavigatordeleteitem.enabled = false;}}}Namespace Baseballexercises{Using System;Using System.Data.Entity;Using System.Data.Entity.Infrastructure;public partial class Baseballentities:dbcontext{Public Baseballentities (): Base ("Name=baseballentities"){}protected override void Onmodelcreating (Dbmodelbuilder modelBuilder){throw new Unintentionalcodefirstexception ();}Public dbset}}Namespace Baseball

Tags: C # operations Database SqlHelper Class C # operations Database SqlHelper Class C # development/* Creator: Kitchen knife, the blog of the layman* Date Created: September 01, 2014*