Access数据库创建、使用
1、创建Access数据库表 1)在office中打开Microsoft Access2010,选择空数据库创建数据库StudentInfo。 2)创建新表,在表格第一列选择数据类型,并输入列名。 3)点击保存,输入数据库表名Student,完成创建。 4)将创建的数据库拷贝到项目的Debug文件中即
1、创建Access数据库表
1)在office中打开Microsoft Access2010,选择空数据库创建数据库StudentInfo。
2)创建新表,在表格第一列选择数据类型,并输入列名。
3)点击保存,输入数据库表名Student,完成创建。
4)将创建的数据库拷贝到项目的Debug文件中即可使用。
2、连接、打开Access数据库
1)数据库连接语句:public string ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source= StudentInfo.accdb";
2)常用的查询、执行sql语句:
<span>public</span> DataSet Query(<span>string</span><span> strSql) { </span><span>using</span> (OleDbConnection conn = <span>new</span><span> OleDbConnection(ConnectionString)) { DataSet ds </span>= <span>new</span><span> DataSet(); </span><span>try</span><span> { conn.Open(); OleDbDataAdapter command </span>= <span>new</span><span> OleDbDataAdapter(strSql, conn); command.Fill(ds, </span><span>"</span><span>ds</span><span>"</span><span>); } </span><span>catch</span><span> (System.Data.SqlClient.SqlException ex) { </span><span>throw</span><span>; } </span><span>return</span><span> ds; } } </span><span>public</span> <span>int</span> ExecuteSql(<span>string</span><span> strSql) { </span><span>using</span> (OleDbConnection conn = <span>new</span><span> OleDbConnection(ConnectionString)) { </span><span>using</span> (OleDbCommand cmd = <span>new</span><span> OleDbCommand(strSql, conn)) { </span><span>try</span><span> { conn.Open(); </span><span>int</span> rows =<span> cmd.ExecuteNonQuery(); </span><span>return</span><span> rows; } </span><span>catch</span><span> (System.Data.SqlClient.SqlException e) { conn.Close(); </span><span>throw</span><span> e; } } } } </span><span>public</span> <span>object</span> GetSingle(<span>string</span><span> strSql) { </span><span>using</span> (OleDbConnection conn = <span>new</span><span> OleDbConnection(ConnectionString)) { </span><span>using</span> (OleDbCommand cmd = <span>new</span><span> OleDbCommand(strSql, conn)) { </span><span>try</span><span> { conn.Open(); </span><span>object</span> obj =<span> cmd.ExecuteScalar(); </span><span>if</span> ((Object.Equals(obj, <span>null</span>)) ||<span> (Object.Equals(obj, System.DBNull.Value))) { </span><span>return</span> <span>null</span><span>; } </span><span>else</span><span> { </span><span>return</span><span> obj; } } </span><span>catch</span><span> (System.Data.SqlClient.SqlException e) { conn.Close(); </span><span>throw</span><span> e; } } } }</span>
3)输入常用的数据库sql语句即可完成调用。
常见问题:
1)添加AccessDatabaseEngine数据接口驱动。
2)如何不能识别.accdb格式数据库,则查看:
http://wenku.baidu.com/link?url=qQ3f2LLz8gL9ZKEjHKae4l1BBeaVCiGo2WXEr0mpVqXbPcQys5VGiCZme2r1lPCSmd3beyGNfi1lwrv4MLIxHLANIwnZOGSTDKGTEBNlUum

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