Home Database Mysql Tutorial c#操作Access[上]

c#操作Access[上]

Jun 07, 2016 pm 03:49 PM
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看到CSDN上不断兄弟姐妹提问关于c#操作Access的问题,于是本人利用闲暇将c#操作Access的方法加以总结,主要解决的问题有: 创建mdb 创建table 读取table内容 查询table中的内容 向table中插入数据 删除table中的记录 向table中插入照片 读取table中的照片等

看到CSDN上不断兄弟姐妹提问关于c#操作Access的问题,于是本人利用闲暇将c#操作Access的方法加以总结,主要解决的问题有:
创建mdb
创建table
读取table内容
查询table中的内容
向table中插入数据
删除table中的记录
向table中插入照片
读取table中的照片等。
另:本人水平有限,不当之处还请斧正。废话少说,开始正题。

文介绍C#访问操作Access数据库的基础知识,并提供一个相关的例程。C#的ADO.NET还不能通过编程方式创建全新的ACCESS(MDB)数据库,所以还只能使用ADOX这个来自COM的链接库来操作。
主要知识点如下:
using System.Data.OleDb;
using System.Data;
连接字符串:String connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=product.mdb";
建立连接:OleDbConnection connection = new OleDbConnection(connectionString);
使用OleDbCommand类来执行Sql语句:
OleDbCommand cmd = new OleDbCommand(sql, connection);
connection.Open();
cmd.ExecuteNonQuery();

1.创建mdb库,例程如下:
需要注意的是:参数mdbPath是mdb的完整路径(不包含表的名称)。例如:D://test.mdb

2.创建具体的表,例程如下:
通常一个mdb的可以包含n个表。下面的程序主要是创建一个table。

3.读取mdb内容(完全读取),例程如下:
本例程返回的是一个DataTable,如需其他格式可以自行转换。

4.读取mdb内容(按列读取),例程如下:
columns数组存储的是你要查询的列名称(必须确保mdb表中存在你要的列)

今天就简单写到这里,以后我会将内容补充完整。

http://blog.csdn.net/gisfarmer/

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