.NET (Core and Framework)

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private const int DEF_HEIGHT = 40;<br />
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        using( Bitmap bmp = new Bitmap( 1, 1 ) )<br />
        {<br />
          using( Graphics g = Graphics.FromImage( bmp ) )<br />
          {<br />
            int iHeight = 0;<br />
            <br />
            // make a string a little bigger by adding "\r\nW" - this give us one line <br />
            // of free space <br />
            SizeF size = g.MeasureString( <br />
              string.Join( "\r\n", txtDescription.Lines ) + "\r\nW", <br />
              txtDescription.Font, <br />
              txtDescription.Width );<br />
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            iHeight += (int)( size.Height + 0.5 );<br />
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            // max size<br />
            if( iHeight > 200 )<br />
            {<br />
              txtDescription.ScrollBars = ScrollBars.Vertical;<br />
              iHeight = 200;<br />
            }<br />
            else<br />
            {<br />
              txtDescription.ScrollBars = ScrollBars.None;<br />
            }<br />
            <br />
            // min size<br />
            if( iHeight < DEF_HEIGHT ) iHeight = DEF_HEIGHT;<br />
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            this.Height = iHeight;<br />
          }<br />
        }<br />
      }<br />
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