ASP.NET[C#]的ACCESS数据库操作类

2022-07-15 80酷酷网 80kuku.com

　　access|asp.net|数据|数据库

      //网上很多都是操作SQL SER 的，整理了一下，不是很完善，但不影响使用，呵呵……
       //private string datapatch = ConfigurationSettings.AppSettings["acessconn"];//数据库地址

        private string datapatch = "db/global.asa";//数据库地址
        ///
        /// 取得dataset
        ///
        /// 查询语句
        ///
        public DataSet GetDataSet(string Commandtext)
        {

            string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
                   "Data Source=" + Server.MapPath(datapatch);
            string strCommandText = Commandtext;

OleDbConnection myConnection = new OleDbConnection(strConnection);
myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

DataSet myDataset = new DataSet();

            myAdpater.Fill(myDataset);

            myConnection.Close();
            return myDataset;
        }
        ///
        /// 取得表
        ///
        /// 查询语句
        ///
        public DataTable GetDataTable(string Commandtext)
        {

            string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
                "Data Source=" + Server.MapPath(datapatch);
            string strCommandText =Commandtext;

OleDbConnection myConnection = new OleDbConnection(strConnection);
myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

DataSet myDataset = new DataSet();

myAdpater.Fill(myDataset);

DataTable mytable = myDataset.Tables[0];

            myConnection.Close();
            return mytable;
        }
        ///
        /// 取得某行的某列的值
        ///
        /// 列的名称
        /// 所属表名
        /// 表的主键
        /// 列所属的主键值
        ///
        public string GetDataColum(string strColumnName,string strTableName,string strColumnkey,string strColumnValue)
        {

            string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
                "Data Source=" + Server.MapPath(datapatch);
            string strCommandText = "select "+strColumnName+","+strColumnkey+" from "+strTableName;

            OleDbConnection myConnection = new OleDbConnection(strConnection);
            myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

DataSet myDataset = new DataSet();

            myAdpater.MissingSchemaAction = MissingSchemaAction.AddWithKey;

            myAdpater.Fill(myDataset);

            myConnection.Close();

            DataTable mytable = myDataset.Tables[0];
            DataRow mydr = mytable.Rows.Find(strColumnValue);
            string mydc = mydr[strColumnName].ToString();


            return mydc;
        }

        ///
        /// 更新某个字段
        ///
        /// 要更新字段名称
        /// 要更新的值
        /// 所属表名称
        /// 表中KEY
        /// 表中KEY的值
        public void UpdateColum(string strColumnName,string strValue,string strTableName,string strColumnKey,string strColumnValue)
        {

            string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
                "Data Source=" + Server.MapPath(datapatch);
            string strCommandText = "select "+strColumnKey+","+strColumnName+" from "+strTableName;

            OleDbConnection myConnection = new OleDbConnection(strConnection);
            myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

            DataSet myDataset = new DataSet();


            myAdpater.MissingSchemaAction = MissingSchemaAction.AddWithKey;

            myAdpater.Fill(myDataset,strTableName);

            DataRow drFindRow = myDataset.Tables[strTableName].Rows.Find(strColumnValue);

            drFindRow[strColumnName] = strValue;



            myAdpater.Update(myDataset,strTableName);

            myConnection.Close();

        }

        ///
        /// 添加行
        ///
        /// 此行中的字段集合
        /// 此行中的字段集合的对应值
        /// 所属表名称
        /// 表中主键

        public void AddRow(string[]columns,string[]columnvalue,string strTableName,string strColumnKey)
        {

            string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
                "Data Source=" + Server.MapPath(datapatch);

            string strColumnCount = "";
            foreach(string thiscolunmname in columns)
            {
                strColumnCount = thiscolunmname+","+strColumnCount;
            }

            string strCommandText = "select "+strColumnCount+strColumnKey+" from "+strTableName;

            OleDbConnection myConnection = new OleDbConnection(strConnection);
            myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

            DataSet myDataset = new DataSet();


            myAdpater.Fill(myDataset,strTableName);

            DataRow newrow = myDataset.Tables[strTableName].NewRow();

            for(int i=0;i<columns.Length;i++)
            {
                string strColumnName = columns[i].ToString();

                newrow[strColumnName] = columnvalue[i].ToString();
            }


            myDataset.Tables[strTableName].Rows.Add(newrow);

            myAdpater.Update(myDataset,strTableName);

            myConnection.Close();

        }
///
/// 更新数据行
///
/// 要更新的列集合
/// 要更新的列集合的对应值
/// 所属表名称
/// 表主键
/// 行所属的ＩＤ
        public void updateRow(string[]columns,string[]columnvalue,string strTableName,string strColumnKey,string strColumnValue)
        {

string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
"Data Source=" + Server.MapPath(datapatch);

            string strColumnCount = "";
            foreach(string thiscolunmname in columns)
            {
                strColumnCount = thiscolunmname+","+strColumnCount;
            }

            string strCommandText = "select "+strColumnCount+strColumnKey+" from "+strTableName;

            OleDbConnection myConnection = new OleDbConnection(strConnection);
            myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

            DataSet myDataset = new DataSet();

            myAdpater.MissingSchemaAction = MissingSchemaAction.AddWithKey;
            myAdpater.Fill(myDataset,strTableName);

            DataRow updaterow = myDataset.Tables[strTableName].Rows.Find(strColumnValue);

            for(int i=0;i<columns.Length;i++)
            {
                string strColumnName = columns[i].ToString();

                updaterow[strColumnName] = columnvalue[i].ToString();
            }


            myAdpater.Update(myDataset,strTableName);

            myConnection.Close();

        }

        ///
        /// 删除行
        ///
        /// 所属表
        /// 主键字段名
        /// 此行主键值
        public void delectRow(string strTableName,string strColumnKey,string strColumnValue)
        {

string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " +
"Data Source=" + Server.MapPath(datapatch);

            string strCommandText = "select "+strColumnKey+" from "+strTableName;

            OleDbConnection myConnection = new OleDbConnection(strConnection);
            myConnection.Open();

OleDbDataAdapter myAdpater = new OleDbDataAdapter(strCommandText,myConnection);

OleDbCommandBuilder myBuilder = new OleDbCommandBuilder(myAdpater);

            DataSet myDataset = new DataSet();

            myAdpater.MissingSchemaAction = MissingSchemaAction.AddWithKey;
            myAdpater.Fill(myDataset,strTableName);

            DataRow newrow = myDataset.Tables[strTableName].Rows.Find(strColumnValue);

            newrow.Delete();

            myAdpater.Update(myDataset,strTableName);

            myConnection.Close();

        }
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