Access的数据操作类（带异常处理）

 

前两天写了SQLserver的数据操作类，今天写个Access的数据操作类。跟大家分享下，这里带了异常处理。

文章属于原创，转载请指明出处，我整理也是废了很大劲的。谢谢

using 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;



/// <summary>

/// DBGG 的摘要说明

/// </summary>

public class DBGG

{

    

    public static OleDbConnection ConnAccess; 

    public DBGG()

    {

        //

        // TODO: 在此处添加构造函数逻辑

        //

    }

    /// <summary>

    /// 建立连接字符串

    /// </summary>

    /// <returns>OleDbConnection对象</returns>

    public static OleDbConnection createConnectionAccess()

    {

        OleDbConnection con = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=aizhigala;Data Source=d:\Info_DB\db_Info.mdb;");

        return con;

    }

    /// <summary>

    /// 执行含有参数组的SQL语句返回布尔值

    /// </summary>

    /// <param name="SQL">SQL语句</param>

    /// <param name="SQLPARS">参数组可以为空，我在这里用于数据的插入</param>

    /// <returns>布尔值</returns>

    public static bool AccessCMD(string SQL, params OleDbParameter[] SQLPARS)

    {

        bool pFlag = false;

        ConnAccess = DBGG.createConnectionAccess();

        try

        {

            ConnAccess.Open();

            OleDbCommand cmd = new OleDbCommand(SQL, ConnAccess);

            if (SQLPARS != null)

            {

                foreach (OleDbParameter p in SQLPARS)

                {

                    cmd.Parameters.Add(p);

                }

            }

            cmd.ExecuteNonQuery();

            pFlag = true;

        }

        catch (System.Data.OleDb.OleDbException e)

        {

            throw new Exception(e.Message);

        }

        finally

        {

            ConnAccess.Close();

        }

        return pFlag;

    }

    /// <summary>

    /// 执行查询语句并返回DataSet

    /// </summary>

    /// <param name="SQL">sql语句</param>

    /// <returns>DataSet对象</returns>

    public static DataSet AccessAdp_Access(string SQL)

    {

        ConnAccess = DBGG.createConnectionAccess();

        try

        {

            ConnAccess.Open();

            OleDbDataAdapter adp = new OleDbDataAdapter(SQL, ConnAccess);

            DataSet ds = new DataSet();

            adp.Fill(ds);

            return ds;

        }

        catch (System.Data.OleDb.OleDbException e)

        {

            throw new Exception(e.Message);

        }

        finally

        {

            ConnAccess.Close();

        }

    }



    /// <summary> 

    /// 运行SQL语句返回DataReader 

    /// </summary> 

    /// <param name="SQL">sql语句</param> 

    /// <returns>OleDbDataReader对象</returns> 

    public static OleDbDataReader AccessDatatReader_Access(string SQL)

    {

        ConnAccess = DBGG.createConnectionAccess();

        ConnAccess.Open();

        OleDbCommand Cmd = new OleDbCommand(SQL, ConnAccess);

        OleDbDataReader Dr;

        try

        {

            Dr = Cmd.ExecuteReader(CommandBehavior.CloseConnection);

        }

        catch

        {

            throw new Exception(SQL);

        }

        Cmd.Dispose();

        return Dr;

    }

    /// <summary> 

    /// 检验是否存在数据*

    /// </summary> 

    /// <param name="SQL">sql语句</param> 

    /// <returns>布尔值</returns> 

    public static bool AccessExistRecorder(string SQL)

    {

        bool pFlag = false;

        ConnAccess = DBGG.createConnectionAccess();

        try

        {

            ConnAccess.Open();

            OleDbCommand cmd = new OleDbCommand(SQL, ConnAccess);

            OleDbDataReader Dr = cmd.ExecuteReader();

            if (Dr.Read())

            {

                pFlag = true;

            }

        }

        catch

        {

        }

        finally

        {

            ConnAccess.Close();

        }

        return pFlag;

    }

    /// <summary> 

    /// 返回SQL语句执行结果的第一行第一列 

    /// </summary> 

    /// <param name="SQL">sql语句</param> 

    /// <returns>字符串</returns> 

    public string ReturnFirstValue(string SQL)

    {

        string str;

        DataSet ds = DBGG.AccessAdp_Access(SQL);

        str = ds.Tables[0].Rows[0][0].ToString();

        return str;

    } 

}