如何搜索字符串中的单独单词，但排除组合单词? [英] How do search seperate words in a string, but exclude combined words ?

问题描述

大家好，
我在代码中遇到了另一个错误.
我的代码段是这样的.

Hello All,
I ran accross another bug in my code.
my code snippet is something line this.

string MyLine = "The Fast Cars";
if(Myline.Contains("Fast"))
{
//do something.
}

在这种情况下，"if"语句为true.

现在，如果字符串，

in this case the "if" statement is true.

Now if the string,

MyLine = "The Fastest Cars"; or
MyLine = "The Fastest, Cars"; or
MyLine = "The xxFastest, Cars";

然后，上面的如果"条件将通过.
可以避免.

Then the above "if" condition will pass.
Can this be avoided.

推荐答案

使用此方法:

Use this method:

public static bool ContainsWord(string line, string word)
{
    return Regex.IsMatch(line, @"\b" + word + @"\b");
}

这是真的吗?

无论如何，假设您已修复代码，则必须在搜索的单词的两侧各留一个空格，以仅搜索整个单词.

How is it true ?

Anyhow assuming you fix the code, you''d have to put a space either side of the word you search for, to search for the whole word only.

另一种方法-您可以拆分将空格上的字符串(即空格)放入数组，然后遍历该数组以检查您要查找的确切字符串.

Another way - you could split your string on spaces (i.e. blanks) into an array and then go through that array to check the exact string you are looking for.

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