A blog by Eric Carter

May, 2005

  • .NET4Office

    'missing' in action with C#

    When programming in C#--if you want to omit an optional parameter for a method in the Excel object model, you have to pass System.Type.Missing to the parameter: myExcelApp.MethodWithOptionalParameter(System.Type.Missing); When you want to omit an...
  • .NET4Office

    The assembly * could not be found...

    An internal user of VSTO asks: Why can't we give an error message like "Visual Studio 2005 Tools for Office is not installed" instead of the meaningless ""The assembly * could not be found at or could not be loaded..."? The meaningless error message...
  • .NET4Office

    A Beta 2 VSTO Issue you may encounter in VB.NET: Me.Range("A1") throws a COMException

    In Beta2 we shipped with an unforunate bug that will affect VB.NET users. If you write code like this in a worksheet project item, it will fail with a COMException at runtime: MsgBox(Me.Range("A1").Value) The problem is that when you wrote the...
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