一段ATM登录代码 求说解……
int rowCount = -1;

  string sql = "exe_proLogined";

  try
  {
  SqlCommand cmd = new SqlCommand(sql, DBHelper.conn);

  cmd.CommandType = CommandType.StoredProcedure;

  cmd.Parameters.Add("@Acount", SqlDbType.VarChar, 30).Value = acount;
  cmd.Parameters.Add("@passWord", SqlDbType.VarChar, 20).Value = pwd;
   
  DBHelper.conn.Open();

  rowCount = int.Parse(cmd.ExecuteScalar().ToString());
  }
  catch (Exception ex)
  {
  throw ex;
  }
  finally
  {
  DBHelper.conn.Close();
  }
  return rowCount;

------解决方案--------------------

C# code

int rowCount = -1;

  string sql = "exe_proLogined";\\存储过程

  try
  {
  SqlCommand cmd = new SqlCommand(sql, DBHelper.conn);\\创建sqlcommand对象

  cmd.CommandType = CommandType.StoredProcedure;\\设置类型为存储过程

  cmd.Parameters.Add("@Acount", SqlDbType.VarChar, 30).Value = acount;\\为为存储过程参数赋值
  cmd.Parameters.Add("@passWord", SqlDbType.VarChar, 20).Value = pwd;\\为为存储过程参数赋值

    
  DBHelper.conn.Open();\\打开连接

  rowCount = int.Parse(cmd.ExecuteScalar().ToString());\\执行返回结果
  }
  catch (Exception ex)
  {
  throw ex;
  }
  finally
  {
  DBHelper.conn.Close();\\关闭连接
  }
  return rowCount;