.NET中固定宽度处理的最佳实践

string originalString = "Hello";
string paddedString = originalString.PadRight(10, ' ');

string originalString = "Hello World";
string fixedWidthString = originalString.Substring(0, 10);

using (StreamReader reader = new StreamReader("input.txt"))
{
    using (StreamWriter writer = new StreamWriter("output.txt"))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {
            string fixedWidthString = line.Substring(0, 10);
            writer.WriteLine(fixedWidthString);
        }
    }
}

string input = "0123456789ABCDEF";
string pattern = @"(.{10})(.{10})(.{10})";
Match match = Regex.Match(input, pattern);
if (match.Success)
{
    string part1 = match.Groups[1].Value;
    string part2 = match.Groups[2].Value;
    string part3 = match.Groups[3].Value;
}

string originalString = "Hello World";
byte[] encodedBytes = Encoding.UTF8.GetBytes(originalString);
string fixedWidthString = Encoding.UTF8.GetString(encodedBytes, 0, 10);