数据访问类

  public class Cls_sqlserver
    {
        sqlCommand myComm;

        public string GetConnctionString()
        {
            return "Data Source=.;Initial Catalog=Test;Integrated Security=True";
        }

        private void disponseComm()
        {
            if (myComm == null)
            {
                return;
            }
            else
            {
                myComm.Connection.Close();
                myComm.Connection.dispose();
            }
            myComm.dispose();
        }

        public DataSet GetDataSet(string CommandText)
        {
            sqlDataAdapter myDA = new sqlDataAdapter();
            DataSet ds = new DataSet();
            try
            {
                myComm = new sqlCommand(CommandText,new sqlConnection(GetConnctionString()));
                myComm.CommandType = CommandType.Text;
                myDA.SelectCommand = myComm;
                myDA.Fill(ds);
            }
            catch
            {
                ds = null;
            }
            return ds;

        }
        public bool Execsql(string CommandText)
        {
            bool b = true;
            try
            {
                myComm = new sqlCommand(CommandText,new sqlConnection(GetConnctionString()));
                myComm.CommandType = CommandType.Text;
                myComm.ExecuteNonQuery();
            }
            catch
            {
                b = false;

            }
            finally
            {
                this.disponseComm();
            }
            return b;
        }

    }