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Cell Format Error : Value cannot be null. Parameter name: font

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77198 Oct 20,2008 05:09 AM Windows Forms 0
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Tags: FAQ
Administrator [Syncfusion]
Asked On October 20, 2008 05:09 AM

Hi,

I have made simple binding with dataset to datagridview, changed colors for set of columns specific for user and added a image column into gridview.

for changing colors dynamically I have used DataGridView.CellFormatting event

while debugging the application, I will get this unhandled exception below and application crashes.

I hope this is some internal event raised before firing the other events of DataGridView.

Please help me for fixing this issue, stack trace below.

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Value cannot be null. Parameter name: font



at System.Windows.Forms.DataGridViewCell.MeasureTextSize(Graphics graphics, String text, Font font, TextFormatFlags flags)
at System.Windows.Forms.DataGridViewTextBoxCell.GetPreferredSize(Graphics graphics, DataGridViewCellStyle cellStyle, Int32 rowIndex, Size constraintSize)
at System.Windows.Forms.DataGridViewCell.GetPreferredWidth(Int32 rowIndex, Int32 height)
at System.Windows.Forms.DataGridViewCell.OnCellDataAreaMouseEnterInternal(Int32 rowIndex)
at System.Windows.Forms.DataGridViewCell.OnMouseMoveInternal(DataGridViewCellMouseEventArgs e)
at System.Windows.Forms.DataGridView.OnCellMouseMove(DataGridViewCellMouseEventArgs e)
at System.Windows.Forms.DataGridView.UpdateMouseEnteredCell(HitTestInfo hti, MouseEventArgs e)
at System.Windows.Forms.DataGridView.OnMouseMove(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseMove(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.DataGridView.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(Int32 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 System.Windows.Forms.Application.Run(ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at Tradebackdate.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain.nExecuteAssembly(Assembly 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)
at System.Threading.ThreadHelper.ThreadStart()

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