使用oleDb来使用数据库连接

using System.Data.OleDb;
public DataView GetSata(string sqlcmd)
{
System.Data.Odbc.OdbcConnection conn = new System.Data.Odbc.OdbcConnection();
try
{
conn.ConnectionString = "FIL=MS Access;DSN=ProjectManage";
conn.Open();
System.Data.Odbc.OdbcDataAdapter da = new System.Data.Odbc.OdbcDataAdapter(sqlcmd, conn);
DataTable dt = new DataTable();
da.Fill(dt);
return dt.DefaultView;
}
catch (Exception ex)
{
// MessageBox.Show(ex.Message);
return null;
}
finally
{
conn.Close();
}

}