如何在有限字符（包括空格）内截断字符串

Question

I'm trying to limit the number of characters in a string.

However when I try the following:

Truncate.TruncateString(_longString, 300);

I Still get spaces included beyond 300 characters. Is there an alternative so that spaces are counted within the character limit?

public static string TruncateString (this string value, int maxChars)
{
    return value.Length <= maxChars ? value : value.SubString(0, maxChars) + "...";
}

Answer 1

If you don't need the trailing spaces (and often you don't), you can always do this:

Truncate.TruncateString(_longstring, 300).Trim();

Edit

Although this answer was accepted as correct, the right way is actually to leave the Trim() out of the above statement and instead to put it here:

public static string TruncateString (this string value, int maxChars)
{
    value = value.trim();
    return value.Length <= maxChars ? value : value.SubString(0, maxChars).Trim() + "...";
}