本教程介紹了如何通過ADO.NET的OleDb相關(guān)類來操作Access數(shù)據(jù)庫的相關(guān)步驟。

1?????軟件環(huán)境

開發(fā)平臺：Microsoft Visual Studio 2010

數(shù)據(jù)庫：Microsoft Office Access 2007

2?????建立數(shù)據(jù)庫步驟

（1） 打開Microsoft Office Access 2007，選擇空白數(shù)據(jù)庫，然后輸入數(shù)據(jù)庫名稱和存放路徑，這里數(shù)據(jù)庫名稱為login.accdb，路徑在D盤下，單機創(chuàng)建。

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（2）選中表1，右鍵選擇設(shè)計視圖，然后輸入表名，這里為tb_user，單擊確定。?

（3）填寫字段名稱和數(shù)據(jù)類型。

（4）選中tb_user表，單擊右鍵—>打開，在里面添加數(shù)據(jù)即可。

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3?????C#代碼操作步驟

（1）???命名空間

??????????? using?System.Data.OleDb;

（2）???連接字符串

??????????? private?staticstring?connStr =?@"Provider= Microsoft.Ace.OLEDB.12.0;Data Source = d:\login.accdb";

??????????? 注意：

???????????? a、DataSource = 數(shù)據(jù)庫存放的路徑（這里數(shù)據(jù)庫放到了D盤目錄下）

???????????? b、?2003版本的Access數(shù)據(jù)庫鏈接字符串：??privatestatic?stringconnStr =@"Provider = Microsoft.Jet.OLEDB.4.0;DataSource = d:\login.mdb";

?????????????????? 2007版本的Access數(shù)據(jù)庫鏈接字符串：privatestaticstring?connStr =@"Provider= Microsoft.Ace.OLEDB.12.0;Data Source = d:\login.accdb";

（3）???建立連接：

??????????? OleDbConnection?tempconn =new?OleDbConnection(connStr);

（4）???使用OleDbCommand類來執(zhí)行Sql語句：

?????????? OleDbCommand?cmd?=?new?OleDbCommand(sql,?tempconn); ?

?????????? tempconn.Open();

?????????? cmd.ExecuteNonQuery();

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（5）???代碼

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data.OleDb;using System.Windows.Forms;using System.Data;namespace test{class AccessHelper{private static string connStr = @"Provider = Microsoft.Ace.OLEDB.12.0;Data Source = d:\login.accdb";public static OleDbConnection GetConn(){OleDbConnection tempconn = new OleDbConnection(connStr);MessageBox.Show(tempconn.DataSource);tempconn.Open();MessageBox.Show(tempconn.State.ToString());return (tempconn);}/// <summary>/// 執(zhí)行增加、刪除、修改指令/// </summary>/// <param name="sql">增加、刪除、修改的sql語句</param>/// <param name="param">sql語句的參數(shù)</param>/// <returns></returns>public static int ExecuteNonQuery(string sql, params OleDbParameter[] param){using (OleDbConnection conn = new OleDbConnection(connStr)){using (OleDbCommand cmd = new OleDbCommand(sql,conn)){if (param != null){cmd.Parameters.AddRange(param);}conn.Open();return(cmd.ExecuteNonQuery());}}}/// <summary>/// 執(zhí)行查詢指令，獲取返回的首行首列的值/// </summary>/// <param name="sql">查詢sql語句</param>/// <param name="param">sql語句的參數(shù)</param>/// <returns></returns>public static object ExecuteScalar(string sql, params OleDbParameter[] param){using (OleDbConnection conn = new OleDbConnection(connStr)){using (OleDbCommand cmd = new OleDbCommand(sql, conn)){if (param != null){cmd.Parameters.AddRange(param);}conn.Open();return (cmd.ExecuteScalar());}}}/// <summary>/// 執(zhí)行查詢指令，獲取返回的datareader/// </summary>/// <param name="sql">查詢sql語句</param>/// <param name="param">sql語句的參數(shù)</param>/// <returns></returns>public static OleDbDataReader ExecuteReader(string sql, params OleDbParameter[] param){OleDbConnection conn = new OleDbConnection(connStr);OleDbCommand cmd = conn.CreateCommand();cmd.CommandText = sql;cmd.CommandType = CommandType.Text;if (param != null){cmd.Parameters.AddRange(param);}conn.Open();return (cmd.ExecuteReader(CommandBehavior.CloseConnection));}/// <summary>/// 執(zhí)行查詢指令，獲取返回datatable/// </summary>/// <param name="sql">查詢sql語句</param>/// <param name="param">sql語句的參數(shù)</param>/// <returns></returns>public static DataTable ExecuteDatable(string sql, params OleDbParameter[] param){using (OleDbConnection conn = new OleDbConnection(connStr)){using (OleDbCommand cmd = new OleDbCommand(sql, conn)){if (param != null){cmd.Parameters.AddRange(param);}DataTable dt = new DataTable();OleDbDataAdapter sda = new OleDbDataAdapter(cmd);sda.Fill(dt);return (dt);}}}}}

轉(zhuǎn)載自：http://blog.csdn.net/zhouxy0901/article/details/39968437

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