将html字符串拆分为页面 [英] Split html string to page

问题描述

在我的asp.net项目中，我需要向用户显示大文档.因为文件有很多文字，所以我需要使用分页.每页应包含约5000个符号.我想按逻辑标记(例如<br/> nbsp space)分割页面.

At my asp.net project I need display big documents to user. Beacuse document has a lot of text, I need use paging. Every page should have about 5000 symbols. I want split pages by logical tokens such as <br/> nbsp space.

最好的方法是什么?

谢谢

推荐答案

最简单的方法是为String

public static IEnumerable<string> GetPages(this string text, 
    int charsPerPage, string breakChar)
{
    int count = 0;
    int start = 0;
    while (count < text.Length)
    {
        count = Math.Min(text.Length, count + charsPerPage);
        if (count == text.Length)
        {
            yield return text.Substring(start, count - start);
        }
        else
        {
            var nextBreak = text.IndexOf(breakChar, count);
            if (nextBreak == -1)
            {
                yield return text.Substring(start, count - start);
                start = count + breakChar.Length;
            }
            else
            {
                yield return text.Substring(start, nextBreak - start);
                start = nextBreak + breakChar.Length;
            }
        }
    }
}

这可能无法正常工作，因为我没有正确测试它-但您明白了

This may not work exactly as I haven't properly tested it - but you get the idea

您可以像这样使用它

var pages = text.GetPages(5000, "<br/>");

这篇关于将html字符串拆分为页面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！