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    Group29 Discussion Board :: View topic - Exception Microsoft.AGL.Common.MISC.HandleAr
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    Group29 Discussion Board Forum Index -> Group29 Tech Tips -> Exception Microsoft.AGL.Common.MISC.HandleAr
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    Exception Microsoft.AGL.Common.MISC.HandleAr
    PostPosted: Thu May 07, 2009 2:59 pm Reply with quote
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    Joined: Jun 23, 2004
    Posts: 340


      


    Using the .NET compact framework, I saw this exception when using the Graphics.MeasureString method

    at Microsoft.AGL.Common.MISC.HandleAr(PAL_ERROR ar)
    at System.Drawing.Graphics.MeasureString(String text, Font font)

    What I found was that, even though the instance of the graphics object I had originally created using CreateGraphics was not null, it was disposed.

    I added a try catch block to make sure I always had an active, not disposed Graphics object

    Code:
    private Graphics Graphics
            {
                get
                {
                    if (_graphics == null )
                    {
                       _graphics = CreateGraphics();
                    }
                    else
                    {
                       [b] try
                        {
                            // see if disposed
                            float f = _graphics.DpiX;
                        }
                        catch
                        {
                            _graphics = CreateGraphics();
                        }[/b]
                    }
                    return _graphics;
                }
            }
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    Exception Microsoft.AGL.Common.MISC.HandleAr
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