C#: escape dot character in string

Question

I need to replace all ocurrences of a dot with a backslash in C# with the string "\\." (escape the dot),

Wath I've tried:

string.Replace(".", "\\.");
string.Replace(".", @"\.");
string.Replace(".", @"\\\.");

all my tries finish with an even number of backslashes before the dot, that are removed automatically after.

Thanks

Answer 1

The first two both work perfectly!

You're probably watching the values with the Watch function from a breakpoint, but this shows backslashes with additional escapes.

If you just output the string to something like the console or a file, you'll see that it works.

Answer 2

为此设计了一种方法：Regex.Escape（）。