data.cs

用VS2008写的配件管理系统

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.OleDb;
using System.Data;

namespace PeiJian
{
    class data
    {
        private OleDbConnection conn = new OleDbConnection();

        public void CreateConnaction()
        {
            if (conn.State == ConnectionState.Closed)
            {
                conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\\d\\data.mdb;Persist Security Info=True";
                conn.Open();
            }
        }

        public OleDbDataReader GetData(string str)
        {
            CreateConnaction();
            OleDbCommand cmd = new OleDbCommand();
            cmd.CommandText = str;
            cmd.Connection = conn;
            OleDbDataReader reader = cmd.ExecuteReader();
            return reader;
        }

        public int Operdata(string str)
        {
            CreateConnaction();
            OleDbCommand cmd = new OleDbCommand();
            cmd.CommandText = str;
            cmd.Connection = conn;
            int result = cmd.ExecuteNonQuery();
            return result;
        }
    } 
}