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Hi my program is the only one touching the cells (no human input) and I get this exception after a while running
System.ArgumentNullException was unhandled
Message=Value cannot be null.
Parameter name: font
Source=System.Drawing
ParamName=font
StackTrace:
at System.Drawing.Graphics.DrawString(String s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format)
at unvell.ReoGrid.Worksheet.af.c(RGDrawingContext A_0, ReoGridCell A_1)
at unvell.ReoGrid.Worksheet.af.a(RGDrawingContext A_0, ReoGridCell A_1)
at unvell.ReoGrid.Worksheet.af.c(RGDrawingContext A_0)
at unvell.ReoGrid.Worksheet.af.al(RGDrawingContext A_0)
at unvell.ReoGrid.Worksheet.am.ak(RGDrawingContext A_0)
at unvell.ReoGrid.Worksheet.a7.ac(RGDrawingContext A_0)
at unvell.ReoGrid.Worksheet.a.ac(RGDrawingContext A_0)
at unvell.ReoGrid.ReoGridControl.OnPaint(PaintEventArgs e)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at unvell.ReoGrid.ReoGridControl.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 System.Windows.Forms.Application.Run(Form mainForm)
at OrSEA.GUI.Program.Main() in C:\Projects\OSEA-2010\OrSEAGUI\Program.cs:line 30
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:
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Seems font cannot be found in your system. What was the font specified as cell style? or workbook loaded from Excel?
Last edited by Jingwood (2015-04-01 13:26:59)
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The form could be running for a while and then suddenly it gets the exception.
I go over the cells and set the font to Arial in the Forms constructor like this:
for (int i = 1; i < m_sAbcCaps.Length; i++) {
for (int iRow = 0; iRow < m_oReoGridControl.CurrentWorksheet.RowCount; iRow++) {
string sCell = m_sAbcCaps[i] + (iRow + 1).ToString();
m_oReoGridControl.CurrentWorksheet[sCell] = "";
var oCell = m_oReoGridControl.CurrentWorksheet.GetCell(sCell);
if (oCell != null) {
oCell.Style.BackColor = Color.White;
oCell.Style.HAlign = unvell.ReoGrid.ReoGridHorAlign.Center;
oCell.Style.VAlign = unvell.ReoGrid.ReoGridVerAlign.Middle;
oCell.DataFormat = unvell.ReoGrid.DataFormat.CellDataFormatFlag.Number;
oCell.Style.FontName = "Arial";
oCell.Style.FontSize = 11;
switch (m_sAbcCaps[i].ToString()) {
case AMOUNT_COL:
case AMOUNT_WITH_ORDERS_COL:
case ORDER_AMOUNT_COL:
oCell.DataFormatArgs = new unvell.ReoGrid.DataFormat.NumberDataFormatter.NumberFormatArgs()
{
DecimalPlaces = 0,
UseSeparator = true
};
break;
case SECURITY_NUMBER_COL:
oCell.DataFormatArgs = new unvell.ReoGrid.DataFormat.NumberDataFormatter.NumberFormatArgs()
{
DecimalPlaces = 0,
};
break;
case SUM_COL:
oCell.DataFormatArgs = new unvell.ReoGrid.DataFormat.NumberDataFormatter.NumberFormatArgs()
{
DecimalPlaces = 5
};
break;
default:
break;
}
}
}
}Offline
How many worksheets / control instances exist inside your form? Did any forms/controls get closed or disposed before this exception happen. I am guessing that other instances that release the font resource and make it become null during memory release, not sure.
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Just one worksheet inside my form.
there are other controls in the form not related to reogrid.
nothing was closed before the exception.
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Have you did resolve this problem?
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Is there a new release that fixed it?
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We couldn't fix it because it wasn't confirmed, we couldn't make it happen in our environment.
Could you please provide a demo project? A RGF or Excel file that causes this happen would be helpful. Thanks.
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