using System;

using System.Collections.Generic;

using System.Text;

using System.Data;

using System.Data.SqlClient;

namespace DatabaseOperate

{

　class SqlOperateInfo

　{

　　//Suppose your ServerName is "aa",DatabaseName is "bb",UserName is "cc", Password is "dd"

　　private string sqlConnectionCommand = "Data Source=aa;Initial Catalog=bb;User ID=cc;Pwd=dd";

　　//This table contains two columns:KeywordID int not null,KeywordName varchar(100) not null

　　private string dataTableName = "Basic_Keyword_Test";

　　private string storedProcedureName = "Sp_InertToBasic_Keyword_Test";

　　private string sqlSelectCommand = "Select KeywordID, KeywordName From Basic_Keyword_Test";

　　//sqlUpdateCommand could contain "insert" , "delete" , "update" operate

　　private string sqlUpdateCommand = "Delete From Basic_Keyword_Test Where KeywordID = 1";

　　public void UseSqlReader()

　　{

　　　SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);

　　　SqlCommand sqlCommand = new SqlCommand();

　　　sqlCommand.CommandType = System.Data.CommandType.Text;

　　　sqlCommand.Connection = sqlConnection;

　　　sqlCommand.CommandText = sqlSelectCommand;

　　　sqlConnection.Open();

　　　SqlDataReader sqlDataReader = sqlCommand.ExecuteReader();

　　　while(sqlDataReader.Read())

　　　{

　　　　//Get KeywordID and KeywordName , You can do anything you like. Here I just output them.

　　　　int keywordid = (int)sqlDataReader[0];

　　　　//the same as: int keywordid = (int)sqlDataReader["KeywordID"]

　　　　string keywordName = (string)sqlDataReader[1];

　　　　//the same as: string keywordName = (int)sqlDataReader["KeywordName"]

　　　　Console.WriteLine("KeywordID = " + keywordid + " , KeywordName = " + keywordName);

　　　}

　　　sqlDataReader.Close();

　　　sqlCommand.Dispose();

　　　sqlConnection.Close();

　　}

　　public void UseSqlStoredProcedure()

　　{

　　　SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);

　　　SqlCommand sqlCommand = new SqlCommand();

　　　sqlCommand.CommandType = CommandType.StoredProcedure;

　　　sqlCommand.Connection = sqlConnection;

　　　sqlCommand.CommandText = storedProcedureName;

　　　sqlConnection.Open();

　　　sqlCommand.ExecuteNonQuery();

　　　//you can use reader here,too.as long as you modify the sp and let it like select * from ....

　　　sqlCommand.Dispose();

　　　sqlConnection.Close();

　　}

　　public void UseSqlDataSet()

　　{

　　　SqlConnection sqlConnection = new SqlConnection(sqlConnectionCommand);

　　　SqlCommand sqlCommand = new SqlCommand();

　　　sqlCommand.CommandType = System.Data.CommandType.Text;

　　　sqlCommand.Connection = sqlConnection;

　　　sqlCommand.CommandText = sqlSelectCommand;

　　　sqlConnection.Open();

　　　SqlDataAdapter sqlDataAdapter = new SqlDataAdapter();

　　　sqlDataAdapter.SelectCommand = sqlCommand;

　　　DataSet dataSet = new DataSet();

　　　//sqlCommandBuilder is for update the dataset to database

　　　SqlCommandBuilder sqlCommandBuilder = new SqlCommandBuilder(sqlDataAdapter);

　　　sqlDataAdapter.Fill(dataSet, dataTableName);

　　　//Do something to dataset then you can update it to 　Database.Here I just add a row

　　　DataRow row = dataSet.Tables[0].NewRow();

　　　row[0] = 10000;

　　　row[1] = "new row";

　　　dataSet.Tables[0].Rows.Add(row);

　　　sqlDataAdapter.Update(dataSet, dataTableName);

　　　sqlCommand.Dispose();

　　　sqlDataAdapter.Dispose();

　　　sqlConnection.Close();

　　}

　}

}