计算页数 [英] count number of pages

问题描述

大家好，

我在一个页面中显示了10个数据.如果数据库中存在506个数据，则我需要页面计数器显示51页，但它仅显示50页.

请任何人可以告诉我，我该如何解决.

在此先感谢

这是我的代码:

Hi everyone,

I have shown 10 numbers of data in a page. If 506 numbers of data are present in the database then i need my page counter display 51 pages, but it display only 50 pages.

Please any one can tell me, how can i solve this.

Thanks in advance

Here is my code:

DataTable dt = article_list_class.getTotalArticles();
        totalrows = dt.Rows.Count;
        PAGEsize = 10;
        totalPageSize = totalrows / PAGEsize;
        if (totalPageSize % 10 == 0)
        {
            totalPageSize = Convert.ToInt32(totalPageSize);
        }
        else
        {
            totalPageSize = Convert.ToInt32(totalPageSize+1);
        }

推荐答案

我已经做到了....

这是错误:

I have done this....

Here is the mistake:

DataTable dt = article_list_class.getTotalArticles();
        totalrows = dt.Rows.Count;
        PAGEsize = 10;
        totalPageSize = totalrows / PAGEsize;
        if (totalPageSize % 10 == 0)
        {
            totalPageSize = Convert.ToInt32(totalPageSize);
        }
        else
        {
            totalPageSize = Convert.ToInt32(totalPageSize)+1;
        }

问题是整数除法.它会被截断，这不是您想要的.试试:

The problem is the integer division. It truncates, which is not what you want here. Try:

int totalrows = dt.Rows.Count;
int PAGEsize = 10;
int totalPageSize = (int)Math.Ceiling(totalrows * 1f / PAGEsize);

...，或者，如果您只想使用整数算术:

... or, if you want to do it with integer arithmetic only:

int totalrows = dt.Rows.Count;
int PAGEsize = 10;
int totalPageSize = (totalrows + PAGEsize - 1) / PAGEsize;

您的数据是否在gridview中

常见错误
除了使用Gridview.Rows.count，还可以使用table.rows.count
下表是Gridview数据源表

谢谢
费萨尔

is your data is in gridview

common mistake
Instead of using Gridview.Rows.count you can use table.rows.count
here table is Gridview datasource table

thanks
Faisal

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