找到&替换C＃中的确切单词 [英] Find & Replace exact Words in C#

问题描述

我正在尝试阅读一个txt文件，找到确切的单词并替换它。



Txt文件包含此文本：这是RezaFx中的Reza。

我正在尝试找到Reza并替换它而不是RezaFx中的Reza。

我使用的是基本代码下面;

Hi,
I am trying read one txt file, find exact word and replace that.

Txt file is include this text: This is Reza in RezaFx.
I am trying find exactly "Reza" and replace that and not "Reza" in "RezaFx".
I am using basic code as below;

string str = File.ReadAllText("C://reza.txt");
            str= str.Replace("Reza", "Behnaz");// want replace "Reza" with Behnaz"
            File.WriteAllText("C://reza1.txt", str);

此格式不起作用。

试过这个：

This format not works.
Tried this:

string str = File.ReadAllText("C://reza.txt");
            str= str.Replace(@"/Reza/", "Behnaz");// want replace "Reza" with Behnaz"
            File.WriteAllText("C://reza1.txt", str);

不行。

试过这个：

Not works.
Tried this:

string str = File.ReadAllText("C://reza.txt");
            str= str.Replace(@"/bReza/b", "Behnaz");// want replace "Reza" with Behnaz"
            File.WriteAllText("C://reza1.txt", str);

不起作用。



对此有什么解决方案吗？

问候，

Not works.

Is there any solution for this?
Regards,

推荐答案

使用正则表达式：

Use a regex:

string s = Regex.Replace(myInputString, @"\bReza\b", " Behnaz ", RegexOptions.IgnoreCase);

In your code insert @ proerly so that your code will work

<pre lang="cs">string text = File.ReadAllText(@&quot;c:\trial.log&quot;);
          text = text.Replace(&quot;ResultCode&quot;, &quot;HI New value &quot;);
          File.WriteAllText(@&quot;c:\trial.log&quot;, text);</pre>

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