根据用户asp.net c＃的请求动态更改文本颜色 [英] dynamically change the color of text as requested by user asp.net c#

问题描述

我所拥有的是我将从.txt文件中读取的文本，并且该文本中出现的某些单词应该以不同的方式着色（这就像搜索具有特定错误率的单词一样）

如果用户希望在文本中找到AAA

：

ABA BBBBCGHTGHG AAA HHHGHGHGHGH GHA



然后我希望ABA被着色为例如红色，因为它有错误率= 1

AAA将是颜色为绿色，因为它的错误率为0

和GHA颜色为蓝色例如



文本和文字是未知的，直到由用户



我也希望有一个错误率颜色的复选框，所以用户检查红色和绿色只有错误率0和1的单词将在文本中着色，其余的将是黑色的，我希望它是动态的



我希望它很明显，谢谢你



我正在使用ASP.NET和C＃

What I have is a text that I will be reading from a .txt file and certain words that appear in that text should be colored differently (it''s like searching for words with a certain error rate)
if the user wanted to find AAA
in text:
ABABBBBCGHTGHGAAAHHHGHGHGHGHGHA

then I want ABA to be colored for example red because it has error rate =1
AAA will be colored green because it has error rate of 0
and GHA colored in blue for instance

The text and words are unknown until defined by the user

and I would also would like to have like check boxes with the colors of error rate so it the user checked red and green only word with error rate 0 and 1 will be colored in the text and the rest will be in black ,, I want thid to be dynamically

I hope it''s clear thank you

I''m using ASP.NET and C#

推荐答案

你可以使用

You can use

string.replace("AAA", "<span style="color: rgb(255,0,0);">AAA</span>")

在构建文本时代码中的
。

in code behind when building your text.

您好，



试试此代码 - 使用正则表达式

Hi,

Try this Code - Using Regex

//Store orginal text in hdnSearchText.Value (HiddenField)

 public string HighlightText(string argText)
 {
     string Search_Str = hdnSearchText.Value.ToString();
     // Setup the regular expression and add the Or operator.
     Regex RegExp = new Regex(Search_Str.Replace(" ", "|").Trim(), RegexOptions.IgnoreCase);
     // Highlight keywords by calling the
     //delegate each time a keyword is found.
     return RegExp.Replace(argText, new MatchEvaluator(ReplaceKeyWords));
 }

 public string ReplaceKeyWords(Match m)
 {
   return ("" + m.Value + "");
 }

 //Search Button Click Code
 protected void btnSearch_Click(object sender,EventArgs e)
 {
  string arg = txtSearch.Text; // Get Search Term
  string result = HighlightText(arg);
  lblDisplay.Text = result; //Display result in any label or html editor 
 }

谢谢



Siva Rm K

Thanks

Siva Rm K

这篇关于根据用户asp.net c＃的请求动态更改文本颜色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！