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3個方法比較典型,源碼如下:

 

 

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();

 

  }

 

 }

 

}

 

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