How can you strip non-ASCII characters from a string? (in C#)

Question

How can you strip non-ASCII characters from a string? (in C#)

Answer 1

I believe MonsCamus meant:

parsememo = Regex.Replace(parsememo, @"[^\u0020-\u007E]", string.Empty);

Answer 2

If you want not to strip, but to actually convert latin accented to non-accented characters, take a look at this question: How do I translate 8bit characters into 7bit characters? (i.e. Ü to U)

Answer 3

I came here looking for a solution for extended ascii characters, but couldnt find it. The closest I found is bzlm's solution. But that works only for ASCII Code upto 127(obviously you can replace the encoding type in his code, but i think it was a bit complex to understand. Hence, sharing this version). Here's a solution that works for extended ASCII codes i.e. upto 255 which is the ISO 8859-1

It finds and strips out non-ascii characters(greater than 255)

Dim str1 as String= "â, ??î or ôu                                                                    

                                                        
            

Answer 4

This is not optimal performance-wise, but a pretty straight-forward Linq approach:

string strippedString = new string(
    yourString.Where(c => c <= sbyte.MaxValue).ToArray()
    );

The downside is that all the "surviving" characters are first put into an array of type char[] which is then thrown away after the string constructor no longer uses it.

Answer 5

I used this regex expression:

    string s = "søme string";
    Regex regex = new Regex(@"[^a-zA-Z0-9\s]", (RegexOptions)0);
    return regex.Replace(s, "");

Answer 6

string s = "søme string";
s = Regex.Replace(s, @"[^\u0000-\u007F]+", string.Empty);