How Can I Replace Line Breaks in C# Strings?

C# string newline replacement method

In C#, it is often necessary to manipulate or replace newlines in strings. Here are a few ways to do it:

Use Environment.NewLine constant to replace newline characters

The easiest way to replace newlines is to use the Environment.NewLine constant:

<code class="language-csharp">string myString = "Line 1\nLine 2";
myString = myString.Replace(Environment.NewLine, "替换文本");</code>

This will replace all newline characters (which vary depending on the operating system) with the specified replacement text.

Custom line break replacement

In some cases, you may need to replace newlines with specific characters or sequences. For example:

<code class="language-csharp">string myString = "Line 1\rLine 2";
myString = myString.Replace("\r", "\n");  // 将回车符替换为换行符</code>

Alternatively, you can replace the line feed with a carriage return:

<code class="language-csharp">myString = myString.Replace("\n", "\r");</code>

Handling cross-platform newline differences

It should be noted that different operating systems use different newline character sequences. To ensure compatibility, consider using a library such as Linq2Regex to handle cross-platform newline conversion.

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