.net访问Access数据库

Codeusing System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.OleDb;

namespace Haley.FrameWork

{

    /**//// <summary>

    /// DataAccess 的摘要说明

    /// </summary>

    public class DataAccess

    {

        protected static OleDbConnection conn = new OleDbConnection();

        protected static OleDbCommand comm = new OleDbCommand();

        public DataAccess()

        {

            //init

        }

        /**//// <summary>

        /// 打开数据库

        /// </summary>

        private static void openConnection()

        {

            if (conn.State == ConnectionState.Closed)

            {

                conn.ConnectionString = @"Provider=Microsoft.Jet.OleDb.4.0;Data Source=" + ConfigurationManager.AppSettings["myconn"];//web.config文件里设定。 

                comm.Connection = conn;

                try

                {

                    conn.Open();

                }

                catch (Exception e)

                { throw new Exception(e.Message); }

            }

        }

        /**//// <summary>

        /// 关闭数据库

        /// </summary>

        private static void closeConnection()

        {

            if (conn.State == ConnectionState.Open)

            {

                conn.Close();

                conn.Dispose();

                comm.Dispose();

            }

        }

        /**//// <summary>

        /// 执行sql语句

        /// </summary>

        /// <param name="sqlstr"></param>

        public static void excuteSql(string sqlstr)

        {

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                comm.ExecuteNonQuery();

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            { closeConnection(); }

        }

        /**//// <summary>

        /// 返回指定sql语句的OleDbDataReader对象，使用时请注意关闭这个对象。

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <returns></returns>

        public static OleDbDataReader dataReader(string sqlstr)

        {

            OleDbDataReader dr = null;

            try

            {

                openConnection();

                comm.CommandText = sqlstr;

                comm.CommandType = CommandType.Text;

                dr = comm.ExecuteReader(CommandBehavior.CloseConnection);

            }

            catch

            {

                try

                {

                    dr.Close();

                    closeConnection();

                }

                catch { }

            }

            return dr;

        }

        /**//// <summary>

        /// 返回指定sql语句的OleDbDataReader对象,使用时请注意关闭

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <param name="dr"></param>

        public static void dataReader(string sqlstr, ref OleDbDataReader dr)

        {

            try

            {

                openConnection();

                comm.CommandText = sqlstr;

                comm.CommandType = CommandType.Text;

                dr = comm.ExecuteReader(CommandBehavior.CloseConnection);

            }

            catch

            {

                try

                {

                    if (dr != null && !dr.IsClosed)

                        dr.Close();

                }

                catch

                {

                }

                finally

                {

                    closeConnection();

                }

            }

        }

        /**//// <summary>

        /// 返回指定sql语句的dataset

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <returns></returns>

        public static DataSet dataSet(string sqlstr)

        {

            DataSet ds = new DataSet();

            OleDbDataAdapter da = new OleDbDataAdapter();

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                da.SelectCommand = comm;

                da.Fill(ds);

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            {

                closeConnection();

            }

            return ds;

        }

        /**//// <summary>

        /// 返回指定sql语句的dataset

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <param name="ds"></param>

        public static void dataSet(string sqlstr, ref DataSet ds)

        {

            OleDbDataAdapter da = new OleDbDataAdapter();

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                da.SelectCommand = comm;

                da.Fill(ds);

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            {

                closeConnection();

            }

        }

        /**//// <summary>

        /// 返回指定sql语句的datatable

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <returns></returns>

        public static DataTable dataTable(string sqlstr)

        {

            DataTable dt = new DataTable();

            OleDbDataAdapter da = new OleDbDataAdapter();

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                da.SelectCommand = comm;

                da.Fill(dt);

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            {

                closeConnection();

            }

            return dt;

        }

        /**//// <summary>

        /// 返回指定sql语句的datatable

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <param name="dt"></param>

        public static void dataTable(string sqlstr, ref DataTable dt)

        {

            OleDbDataAdapter da = new OleDbDataAdapter();

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                da.SelectCommand = comm;

                da.Fill(dt);

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            {

                closeConnection();

            }

        }

        /**//// <summary>

        /// 返回指定sql语句的dataview

        /// </summary>

        /// <param name="sqlstr"></param>

        /// <returns></returns>

        public static DataView dataView(string sqlstr)

        {

            OleDbDataAdapter da = new OleDbDataAdapter();

            DataView dv = new DataView();

            DataSet ds = new DataSet();

            try

            {

                openConnection();

                comm.CommandType = CommandType.Text;

                comm.CommandText = sqlstr;

                da.SelectCommand = comm;

                da.Fill(ds);

                dv = ds.Tables[0].DefaultView;

            }

            catch (Exception e)

            {

                throw new Exception(e.Message);

            }

            finally

            {

                closeConnection();

            }

            return dv;

        }

      

    }

}

在Config文件中添加Access文件的路径：

Code    <appSettings>

        <!-- 这里是存放Access文件的地址。用Access文件存放的路径替换下边的路径。-->

        <add key="myconn" value="D:\Test\Test.mdb"/>       

    </appSettings >

在页面添加控件，在cs文件中使用上边的类。

Code    protected void Button1_Click(object sender, EventArgs e)

    {

        string name = TextBox1.Text;

        string strSql = "insert into Table1(Name) values('" + name + "')";

        DataAccess.excuteSql(strSql);

    }