How to insert a control built with Interop Forms Toolkit in Excel RRS feed

  • Question

  • Hi,

    I created a control with the Interop Forms Toolkit and I can insert the control in a worksheet by these 2 ways:

    • The developper toolbar insert an activex control
    • With a macro

    Now, I want to insert the control, but from an addin CommandBarButton built with VSTO.

    It throws an exception with code 0x800A03EC and a message saying unable to insert an object.

    Technical informations : I'm using VSTO 2005 SE with VS2005 .Net Framework 2.0 for the addin. The control is built using Interop Forms Toolkit 2.1 in VS2008 .Net Framework 2.0.

    I tried the same code to insert my control and a label. The label works, my control doesn't:

    void buttonAddin2_Click(...) {
    		Excel.Worksheet sheet = (Excel.Worksheet)Application.ActiveWorkbook.ActiveSheet;
    		sheet.Shapes.AddOLEObject("Forms.Label.1", missing, false, false, missing, missing, missing, 50,50,100,100);
    	catch (Exception exc) {

    I think I'm missing something, but the error message is not very helpful.

    Why it is possible to add my control in Excel via "standard" ways, but not via my addin ? How can I make my addin able to insert my control ? Do I have to update the control ? Is there something to change in the addin to allow it to insert my control ?

    And if there is no answer about it, is there any way to get more details about the errors ?

    Many thanks,


    vendredi 25 juin 2010 08:24

Toutes les réponses

  • Hi,

    I've tried another approaches

    - I tried to create a macro at runtime, then execute it to insert my control. It doesn't work...

    - The addin is an Excel Addin based on VSTO template. So I tried another approach: building an addin based on Extensibility.IDTExtensibility2 interface (a COM Addin) instead of the other one. Now it works ! I've used exactly the same code... it works using the AddOLEObject or executing the macro...

    Does anybody have an explanation of this behaviour?

    I'm new in extending Office applications and I don't understand why it works when I create a COM Addin based on Extensibility.IDTExtensibility2, and it doesn't using the Excel addin template coming with VSTO ?

    What are the key differences between these 2 kind of extensions ?


    • Marqué comme réponse JulienC75 mardi 29 juin 2010 09:47
    • Non marqué comme réponse JulienC75 mardi 29 juin 2010 09:48
    mardi 29 juin 2010 09:47