Truncate string on whole words in .NET C#

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Try the following. It is pretty rudimentary. Just finds the first space starting at the desired length.

public static string TruncateAtWord(this string value, int length) {
    if (value == null || value.Length < length || value.IndexOf(" ", length) == -1)
        return value;

    return value.Substring(0, value.IndexOf(" ", length));
}

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