正则表达式，不输入超过250个单词 [英] Regular Expression for not entering more than 250 words

问题描述

Hello Friends，



我正在网站上工作，我的要求是我需要限制评论文本框输入不超过250个单词。我在该文本框上应用了multimode属性，因为这个maxlength属性不起作用。所以我使用正则表达式验证器来设置限制。现在我需要一个正则表达式，限制用户输入不超过250个单词。请帮帮我。谢谢。

解决方案

尝试限制为多个字符（从存储的角度来看更合理）： http://stackoverflow.com/questions/6111593/asp-text-box-limit-number-of-characters [ ^ ]

检查：

TextBox：使用ASP.Net RegularExpression验证器进行最小和最大字符长度验证 [ ^ ]

< BLOCKQUOTE>作为总结一个单词的定义是一个或一组空格分隔的字符，那么你可能只想使用字符串拆分函数来计算单词的数量

  string  s =  你好世界1 2 3; 
 System.Diagnostics.Debug.WriteLine（GetNumWord（s）+   words）; 
 
  int  GetNumWord（ string  s）
 {
  var  words = s.Split（ new   char  [] {' '}，StringSplitOptions.RemoveEmptyEntries）; 
  return  words.Length; 
 
} 

在上面的测试中，输出为5个字，忽略额外的空格。

Hello Friends,

I am working on a website and my requirement is that i need to restrict "Comment Textbox" for entering not more than 250 Words. I applied multimode property on that textbox due to this maxlength property is not working. So i used Regular expression validator to put the restriction. Now i need a regular expression that limits the user to enter not more than 250 words. Please help me in this one. Thank you.

解决方案

Try limiting to a number of characters instead (which is more reasonable from a storage standpoint): http://stackoverflow.com/questions/6111593/asp-text-box-limit-number-of-characters[^]

Check:
TextBox: Minimum and Maximum Character Length Validation using ASP.Net RegularExpression Validators[^]

Assuming that the definition of a word is one or a group of character(s) that is space delimited, then you may want to just count the number of words using the string split function

    string s = "hello world  1   2  3  ";
    System.Diagnostics.Debug.WriteLine(GetNumWord(s)+ " words");

int GetNumWord(string s)
{
    var words=s.Split(new char[] {' '},StringSplitOptions.RemoveEmptyEntries);
    return words.Length;

}

In the above test, the output is 5 words, extra spaces are ignored.

这篇关于正则表达式，不输入超过250个单词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！