ExtendedStringBuilder.cs

using System.Runtime.Serialization;
using System.Text;

namespace Rampastring.Tools
{

    /// <summary>
    /// A StringBuilder that can automatically add a separator between
    /// appended strings.
    /// </summary>
    public class ExtendedStringBuilder : ISerializable
    {
        public ExtendedStringBuilder()
        {
            stringBuilder = new StringBuilder();
        }

        public ExtendedStringBuilder(string value, bool useSeparator)
        {
            stringBuilder = new StringBuilder(value);
            UseSeparator = useSeparator;
        }

        public ExtendedStringBuilder(string value, bool useSeparator, char separator)
        {
            stringBuilder = new StringBuilder(value);
            UseSeparator = useSeparator;
            Separator = separator;
        }

        public ExtendedStringBuilder(bool useSeparator, char separator)
        {
            stringBuilder = new StringBuilder();
            UseSeparator = useSeparator;
            Separator = separator;
        }

        private readonly StringBuilder stringBuilder;

        public char Separator { get; set; }
        public bool UseSeparator { get; set; }

        public int Length { get { return stringBuilder.Length; } }

        public void Append(int value)
        {
            Append(value.ToString());
        }

        public void Append(object value)
        {
            Append(value.ToString());
        }

        public void Append(string value)
        {
            stringBuilder.Append(value);
            if (UseSeparator)
                stringBuilder.Append(Separator);
        }

        public void Remove(int startIndex, int length)
        {
            stringBuilder.Remove(startIndex, length);
        }

        public override string ToString()
        {
            if (UseSeparator)
                stringBuilder.Remove(stringBuilder.Length - 1, 1);

            return stringBuilder.ToString();
        }

        public void GetObjectData(SerializationInfo info, StreamingContext context)
        {
            ((ISerializable)stringBuilder).GetObjectData(info, context);
        }
    }

}