String - Truncate

A string extension method that truncates.

Try it

public static void Main()
{	
	string input = "The quick brown fox jumps over the lazy dog.";
	
	//C# Extension Method: String - Truncate
    string output = input.Truncate(27);

    System.Console.WriteLine(output);
}

View Source 
public static partial class Extensions
{
    /// <summary>
    ///     A string extension method that truncates.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="maxLength">The maximum length.</param>
    /// <returns>A string.</returns>
    public static string Truncate(this string @this, int maxLength)
    {
        const string suffix = "...";

        if (@this == null || @this.Length <= maxLength)
        {
            return @this;
        }

        int strLength = maxLength - suffix.Length;
        return @this.Substring(0, strLength) + suffix;
    }

    /// <summary>
    ///     A string extension method that truncates.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <param name="maxLength">The maximum length.</param>
    /// <param name="suffix">The suffix.</param>
    /// <returns>A string.</returns>
    public static string Truncate(this string @this, int maxLength, string suffix)
    {
        if (@this == null || @this.Length <= maxLength)
        {
            return @this;
        }

        int strLength = maxLength - suffix.Length;
        return @this.Substring(0, strLength) + suffix;
    }
}