/// <summary>
        /// Purpose: To adjust the height of a RichTextbox depending on the length of Text
        /// Logic: Use a Label-control for reference. 
        ///    Fix Label's MinumumSize, same as the width and height of the RichTextbox.
        ///    Fix Label's MaximumSize(Width), same as the width of the RichTextbox so that width does not increase.
        ///    Assign Label's MaximumSize(Height), to be far greater than the Height of RichTextbox.
        ///    Set Label's Text, same as Textbox's Text .
        ///    Now, the Label would resize itself because of AutoSize. 
        ///    So, set the height of RichTextbox same as of Label's.
        /// </summary>
        /// <param name="richTextBox1">RichTextbox whose height is to be adjusted.</param>
        private void ResizeRichTextBox(RichTextBox richTextBox1)
        {
            try
            {
                Label lblPrototype = new Label();

                lblPrototype.AutoSize = true;
                lblPrototype.Font = richTextBox1.Font;
                lblPrototype.BorderStyle = BorderStyle.FixedSingle;
                lblPrototype.MinimumSize = new Size(richTextBox1.Width, richTextBox1.Height);
                lblPrototype.MaximumSize = new Size(richTextBox1.Width, richTextBox1.Height * 10);
                lblPrototype.AutoSize = true;
                lblPrototype.Text = richTextBox1.Text;

                richTextBox1.Height = lblPrototype.PreferredHeight;
            }
            catch (Exception ex)
            {
                ex = new Exception("Error occurred while deciding vertical scroll for Textbox. " + ex.Message);
                throw ex;
            }
        }