如何在C＃中的datagridview中将第三列的两列数据相乘 [英] How to multiply data of two columns for third column in datagridview in C#

问题描述

hi guys

如何将C＃中datagridview中第三列的两列数据与ado.net -sql

命令或for循环相乘???我想将两列的数据（int32）相乘并在第三列中显示



谢谢

hi guys
How to multiply data of two columns for third column in datagridview in C# with ado.net -sql
command or for loop ??? I want to multiply the data (int32) of two columns and show it in the third column

thanks

推荐答案

一种简单的方法是将SQL中的列相乘

An easy way would be to multiply the columns in SQL

SELECT field1, field2, field1 * field2 AS field3 
FROM sometable

你可以使用循环

You Can use loop

for(int i = 0 ; i<datagrid.rows.count mode="hold" />
  {
        int a =datagrid.rows[i][0].value;
        int b =datagrid.rows[i][1].value;

        int c = a*b;

        c=datagrid.rows[i][2].value;


  }

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