ASP.NET[C#]的ACCESS數據庫操作類
  ASP.NET[C#]的ACCESS數據庫操作類 


      //網上很多都是操作SQL SER 的，整理了一下，不是很完善，但不影響使用，呵呵……
       //private string datapatch = ConfigurationSettings.AppSettings["acessconn"];//數據庫地址
                                    
        private string datapatch = "db/global.asa";//數據庫地址
        /// 
        /// 取得dataset
        /// 
        /// 查詢語句
        /// 
        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
        /// 
        /// 查詢語句
        /// 
        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
        /// 
        /// 列的名稱
        /// 所屬表名
        /// 表的主鍵
        /// 列所屬的主鍵值
        /// 
        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;
        }
        

        /// 
        /// 更新某個字段
        /// 
        /// 要更新字段名稱
        /// 要更新的值
        /// 所屬表名稱
        /// 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對應值
        /// 所屬表名稱
        /// 表中主鍵

        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();
            
        }
/// 
/// 更新數據行
/// 
/// 要更新的列集合
/// 要更新的列集合的對應值
/// 所屬表名稱
/// 表主鍵
/// 行所屬的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();
            
        }

　
        /// 
        /// 刪除行
        /// 
        /// 所屬表
        /// 主鍵字段名
        /// 此行主鍵值
        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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