在richtextbox中找到一个字符串模式 [英] find a string pattern in richtextbox

问题描述

很抱歉，如果这是一个愚蠢的问题，但是如何在Richtextbox中找到模式?

文字是这样的:

你好，我想{help | meet |给}打电话.

我想找到所有带有花括号的字符串，然后将整个字符串替换为RANDOMLY中的任何单词.

因此，单击按钮，上面的行可能变为:

你好，我想帮助你.
或
你好，我想打电话给你.

我曾考虑过使用正则表达式，但在使用方法上完全空白，我也不了解google上的一些教程.

sorry if this is a stupid question but how do i find a pattern in richtextbox??

the text is like :

hello i want to {help|meet|call} you.

i want to find all such strings which have curly braces and then replace the whole string with any word from within it, RANDOMLY.

so on the click of a button the above line might become :

hello i want to help you.
OR
hello i want to call you.

i thought of using regex but iam completely blank on how to use it, also i didnt understand some tutorials on google.

推荐答案

您可以使用高级正则表达式-它是随机的，这意味着您需要任何复杂的东西:

You can do it with an advanced Regex - it is the random bit that means you need anything complex:

Random r = new Random();
private void butRegex_Click(object sender, EventArgs e)
    {
    //string stringWithTextIn = "hello i want to {help|meet|call} you.";
    string stringWithTextIn = "hello i want to {help|meet|call} you {please|come|soon}.";
    // Regex regex = new Regex(@"({.*})");
    Regex regex = new Regex(@"({[^}]*})");
    string r = regex.Replace(stringWithTextIn, new MatchEvaluator(ReplaceMatch));
    MessageBox.Show(r);
    }
string ReplaceMatch(Match m)
    {
    string s = m.Value;                     // Get matched text only
    s = s.Substring(1, s.Length - 2);       // Remove ''{'' and ''}''
    string[] parts = s.Split(''|'');          // Break into words
    return parts[r.Next(0,parts.Length)];   // return randow word
    }

[edit]更改了正则表达式和测试字符串，如下所示-特别是新版本，直到关闭}"字符为止[/edit]

[edit]Changed Regex and test string as shown - new version specifically until closing ''}'' character[/edit]

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