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(); 
} 
} 
}