问C#每隔n个字符换行

EN

public static string SpliceText(string text, int lineLength) {
  return Regex.Replace(text, "(.{" + lineLength + "})", "$1" + Environment.NewLine);
}

public static string[] SpliceText(string text, int lineLength) {
  return Regex.Matches(text, ".{1," + lineLength + "}").Cast<Match>().Select(m => m.Value).ToArray();
}

public IEnumerable<string> GetChunks(this string sourceString, int chunkLength)
{  
    using(var sr = new StringReader(sourceString))
    {
        var buffer = new char[chunkLength];
        int read;
        while((read= sr.Read(buffer, 0, chunkLength)) == chunkLength)
        {
            yield return new string(buffer, 0, read);
        }        
    }
}

//in this case n = 10 - adjust as needed
List<string> groups = (from Match m in Regex.Matches(str, ".{1,10}") 
                       select m.Value).ToList();

string newString = String.Join(Environment.NewLine, lst.ToArray());