如果数据已存在，则网格视图添加数量。 [英] Grid View add quantity if data already exists..

问题描述

我有一个 datagrid 视图它有3列

第1列= ProductId

第2列=价格

第3栏=数量



我的问题是

如何将数量加1（+1）如果产品ID和相同的价格重复出现。

如果productid相同，它应该不将数量加1 但价格不同 ..



请给我一个小例子bcoz我不擅长网格..



谢谢你提前，

A.Mohammed Owais。

I am having a datagrid view it has 3 columns
Column 1 = ProductId
Column 2 = Price
Column 3 = Quantity

My Question is
How to add quantity by 1 (+1) if the product id and with same price is repeated.
and it should not add the quantity by 1 if the productid is same but price is different..

please give me a small example with it bcoz i am not good in Grids..

Thanks in advanced,
A.Mohammed Owais.

推荐答案

嗨穆罕默德，



我已经为你做了一个例子来制作你要求的功能



这里设计为Screen

http://i.imgur.com/yc4s5.jpg [ ^ ]



然后在这里是代码beh ind of the event点击按钮添加

Hi Mohammed ,

I have made an example for you to make the functionality you are asking for

here is the design as Screen
http://i.imgur.com/yc4s5.jpg[^]

then here is the code behind of the event Click of the button Add

//Boolean to check if he has row has been
           bool Found = false;
           if (dataGridView.Rows.Count > 0)
           {

               //Check if the product Id exists with the same Price
               foreach (DataGridViewRow row in dataGridView.Rows)
               {
                   if (Convert.ToString(row.Cells[0].Value) == textBox_ProductId.Text && Convert.ToString(row.Cells[1].Value) == textBox_Price.Text)
                   {
                       //Update the Quantity of the found row
                       row.Cells[2].Value = Convert.ToString(1 + Convert.ToInt16(row.Cells[2].Value));
                       Found = true;
                   }

               }
               if (!Found)
               {
                   //Add the row to grid view
                   dataGridView.Rows.Add(textBox_ProductId.Text, textBox_Price.Text, 1);
               }

           }
           else
           {
               //Add the row to grid view for the first time
               dataGridView.Rows.Add(textBox_ProductId.Text, textBox_Price.Text, 1);
           }

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