/// <summary>
        /// Gets or sets the maximum number of lines that can be displayed.
        /// </summary>
        [Category("Appearance")]
        [Description("Gets or sets the maximum number of lines that can be displayed.")]
        [DefaultValue(ShellBox.DefaultMaximumLines)]
        private int MaximumLines
        {
            get { return this._maximumLines; }
            set
            {
                if(value < 0)
                    throw new ArgumentException("Value must not be negative.");

                this._maximumLines = value;
                this.UpdateLineCount();
            }
        }