将所有要加载的号码添加到下拉列表中 [英] Adding all numbers being loaded in a dropdownlist

问题描述

我有一个列表框，它使用数据库表中的数字加载自身.现在，我想将下拉列表中出现的所有数字加起来.有人可以提示如何添加所有这些数字吗?

I have a list box that loads itself with numbers from the database table. Now I want to add up all the numbers being present in that drop down list. Can anyone give a hint how to add all those numbers?

推荐答案

可以！
1.在列表框的各个项目上进行for循环
2.在每次迭代中，获取该索引/项目的特定值
3.在变量中跟踪这些值.保持汇总计数器"
4.循环结束后，使用总和计数器显示值(所有现有数字的总和.)

Sure!
1. Right a for loop across the items of the listbox
2. In each iteration, get the specific value for that index/item
3. Keep a track of those values in a variable. Keep a ''summ counter''
4. Once the loop is over, use the sum counter to show the value (add up of all existing numbers.)

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