DataAccess类(Access)

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb;
using System.Windows.Forms;


namespace StudentsScore
{
class DataAccess
{
private string strDSN;
OleDbConnection oledbCon;

public void dataCon()
{
strDSN = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = " + Application.StartupPath.ToString() + "\\名前.mdb";
//strDSN = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source = " + Application.StartupPath.ToString() + "\\名前.accdb";
oledbCon = new OleDbConnection(strDSN);
}

public DataSet getDataset(string sql)
{
DataSet ds = new DataSet();
oledbCon.Open();
try
{
OleDbCommand oledbCom = new OleDbCommand(sql, oledbCon);
OleDbDataAdapter oledbDa = new OleDbDataAdapter(oledbCom);
oledbDa.Fill(ds);
return ds;
}
catch (Exception ex)
{
throw new Exception(ex.ToString());
}
finally
{
oledbCon.Close();
}
}

public bool sqlExec(string sql)
{
try
{
oledbCon.Open();
}
catch
{
MessageBox.Show("数据库未连接");
}
try
{
OleDbCommand oledbCom = new OleDbCommand(sql, oledbCon);
oledbCom.ExecuteNonQuery();
return true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "提示");
return false;
}
finally
{
oledbCon.Close();
}
}
}
}