# System.ArgumentException when resizing LabelPrinterLayer **URL:** \ **Category:** WinForms\ **Created:** [March 6, 2012, 1:57pm UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920 "2012-03-06T13:57:42Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Steven1](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/steven1/32/18983_2.png) [@Steven1](https://community.thinkgeo.com/u/Steven1)\ **Post date:** [March 6, 2012, 1:57pm UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/1 "2012-03-06T13:57:42Z")
Hi guys, I have come across a problem when using the LabelPrinterLayer. Under certain circumstances, when resizing the LabelPrinterLayer you get a System.ArgumentException with the following stack trace: `System.ArgumentException was unhandled  Message=Value of '0' is not valid for 'emSize'. 'emSize' should be greater than 0 and less than or equal to System.Single.MaxValue.Parameter name: emSize  Source=System.Drawing  ParamName=emSize  StackTrace:       at System.Drawing.Font.Initialize(FontFamily family, Single emSize, FontStyle style, GraphicsUnit unit, Byte gdiCharSet, Boolean gdiVerticalFont)       at System.Drawing.Font.Initialize(String familyName, Single emSize, FontStyle style, GraphicsUnit unit, Byte gdiCharSet, Boolean gdiVerticalFont)       at System.Drawing.Font..ctor(String familyName, Single emSize, FontStyle style)       at ThinkGeo.MapSuite.Core.GdiPlusGeoCanvas.Chg=(GeoFont DU8=)       at ThinkGeo.MapSuite.Core.GdiPlusGeoCanvas.MeasureTextCore(String text, GeoFont font)       at ThinkGeo.MapSuite.Core.GeoCanvas.MeasureText(String text, GeoFont font)       at ThinkGeo.MapSuite.Core.LabelPrinterLayer.ZkM=(GeoCanvas Z0M=, GeoFont aEM=, String aUM=, RectangleShape akM=)       at ThinkGeo.MapSuite.Core.LabelPrinterLayer.DrawCore(GeoCanvas canvas, Collection`1 labelsInAllLayers)       at ThinkGeo.MapSuite.Core.Layer.Draw(GeoCanvas canvas, Collection`1 labelsInAllLayers)       at ThinkGeo.MapSuite.DesktopEdition.PrinterInteractiveOverLay.DrawCore(GeoCanvas canvas)       at ThinkGeo.MapSuite.DesktopEdition.Overlay.kBQ=(GeoCanvas kRQ=)       at ThinkGeo.MapSuite.DesktopEdition.Overlay.Draw(GeoCanvas canvas)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.NxQ=(RectangleShape FBg=, Overlay FRg=, Int32 Fhg=, Int32 Fxg=, GeographyUnit GBg=)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.LBQ=(IEnumerable`1 Ghg=)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.HBQ=()       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.GBQ=(Int32 CRg=)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.BRQ=(InteractionArguments 9hc=)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.8xM=(Object 6hc=, 4xU= 6xc=)       at QRQ=.5xQ=.OnMouseEvent(4xU= e)       at QRQ=.5xQ=.BBU=(Double BRU=, Double BhU=, Double BxU=, Double CBU=)       at ThinkGeo.MapSuite.DesktopEdition.WinformsMap.8Bc=(Object 8Rc=, MouseEventArgs 8hc=)       at System.Windows.Forms.Control.OnMouseMove(MouseEventArgs e)       at System.Windows.Forms.Control.WmMouseMove(Message& m)       at System.Windows.Forms.Control.WndProc(Message& m)       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)       at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)       at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)       at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)       at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)       at ScaleBarTest.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)       at System.Threading.ThreadHelper.ThreadStart()  InnerException: ` We first noticed the problem when resizing the LabelPrinterLayer by dragging one of its corners with the mouse. At a certain point when the label became quite small the exception was thrown. As usual, I have attached a sample project for your convenience. The MapSuite Desktop version that I am using is 5.5.0.68. Note that the attached project has the same name as an earlier one I sent and does not really reflect the LabelPrinterLayer problem. Thanks! Steve   [001\_PositionPrinterLayer.zip](https://community.thinkgeo.com/uploads/default/original/1X/89c9bb14c522f3ac1443748925b62f57e0ef2ceb.zip) (35.5 KB) ---
**Author:** ![ThinkGeo](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/thinkgeo/32/25029_2.png) [@ThinkGeo](https://community.thinkgeo.com/u/ThinkGeo)\ **Post date:** [March 8, 2012, 10:00am UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/2 "2012-03-08T10:00:57Z")
Steven,      I have tested your sample by using  DesktopEdition.dll and MapSuiteCore.dll which version is 5.5.0.68, but I couldn’t reproduce the issue which you encountered.      First, I click on the layer to make it to edit mode, and then drag the corner of layer boundary to make it smallest, but no exception thrown.      If I misunderstand, please let me know and give me more information.      Thanks,   James ---
**Author:** ![Steven1](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/steven1/32/18983_2.png) [@Steven1](https://community.thinkgeo.com/u/Steven1)\ **Post date:** [March 8, 2012, 3:32pm UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/3 "2012-03-08T15:32:39Z")
Hi James, Thanks for your reply. You say you clicked on the 'layer'. Does that mean you clicked on the MapPrinterLayer or the LabelPrinterLayer? My problem is with the Label at the top of the print preview and the error occurs when it is resized, not the map. Thanks, Steve   ---
**Author:** ![ThinkGeo](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/thinkgeo/32/25029_2.png) [@ThinkGeo](https://community.thinkgeo.com/u/ThinkGeo)\ **Post date:** [March 9, 2012, 12:17pm UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/4 "2012-03-09T12:17:58Z")
Steven,      Thank you for reporting this bug.  We were able to recreate the issue and it will be reviewed and assigned to our development team during the next week.  Once the bug has been resolved I will update the ticket so that you will be aware of the resolution.  If you ever need a status update, please feel free to add a comment to this ticket.      Thanks!   James  ---
**Author:** ![Gary2](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/g/49beb7/32.png) [@Gary2](https://community.thinkgeo.com/u/Gary2)\ **Post date:** [March 22, 2012, 5:15pm UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/5 "2012-03-22T17:15:59Z")
Hello Steve,      We have fixed this problem, you can get 5.5.129.0 or later and have a try.      Feel free to let us know if you still meet the problem.      Regards,      Gary ---
**Author:** ![Steven1](https://community.thinkgeo.com/user_avatar/community.thinkgeo.com/steven1/32/18983_2.png) [@Steven1](https://community.thinkgeo.com/u/Steven1)\ **Post date:** [March 23, 2012, 5:50am UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/6 "2012-03-23T05:50:25Z")
Seems to be working fine now.      Thanks guys. ---
**Author:** ![Gary2](https://community.thinkgeo.com/letter_avatar_proxy/v4/letter/g/49beb7/32.png) [@Gary2](https://community.thinkgeo.com/u/Gary2)\ **Post date:** [March 23, 2012, 10:22am UTC](https://community.thinkgeo.com/t/system-argumentexception-when-resizing-labelprinterlayer/1920/7 "2012-03-23T10:22:15Z")
Hello Steven,      You are welcome.      Regards,      Gary