方法有与string.replace只命中＆QUOT;整个单词QUOT;

问题描述

我需要一种方法来有这样的：

I need a way to have this:

"test, and test but not testing.  But yes to test".Replace("test", "text")

返回这样的：

return this:

"text, and text but not testing.  But yes to text"

基本上我想要替换整个单词，而不是部分匹配。

Basically I want to replace whole words, but not partial matches.

注：我将不得不使用VB这个（SSRS 2008 code），而C＃是我正常的语言，所以在任何的反应都很好

NOTE: I am going to have to use VB for this (SSRS 2008 code), but C# is my normal language, so responses in either are fine.

推荐答案

一个正则表达式是最简单的方法：

A regex is the easiest approach:

string input = "test, and test but not testing.  But yes to test";
string pattern = @"\btest\b";
string replace = "text";
string result = Regex.Replace(input, pattern, replace);
Console.WriteLine(result);

该模式的重要组成部分，是 \ b 元字符，它匹配的单词边界。如果你需要它是区分大小写的使用 RegexOptions.IgnoreCase ：

The important part of the pattern is the \b metacharacter, which matches on word boundaries. If you need it to be case-insensitive use RegexOptions.IgnoreCase:

Regex.Replace(input, pattern, replace, RegexOptions.IgnoreCase);

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