ASP.NET的ACCESS数据库操作类

//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; " +