C#操作access数据库

using System.Data.OleDb;
using System.Data.SqlClient;

OleDbConnection conn = new OleDbConnection();//定义OleDb连接
conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=d:\access\fp.accdb";//定义OleDb连接字符串（数据库路径）

conn.Open();

string cmd = "select * from tb";
OleDbDataAdapter sda = new OleDbDataAdapter(cmd, conn);
DataSet ds = new DataSet(); 
sda.Fill(ds);
dGVfp.DataSource = ds.Tables[0];// dGVInfo为DatagridView的name
conn.Close();