Modify excel appearance with c# in winform application

Question

I have a winform application that contains an excel viewer in one of its forms.It lets user to open and modify excel files. but i want to avoid users to create any new sheets,

so i need to know :

How can i get rid of the last tab of workbook tabs that allows user to add new sheet?

Edit :

I have found the following code to unvisible the button in the above image:

ExcelViewer1.Application.CommandBars["Workbook tabs"].Controls["Sheet List"].Visible = false;

But it thrown a COMException : " Error HRESULT E_FAIL has been returned from a call to a com component ".

The same command works for other commandbars like Ply , Cell

Answer 1

We can disable the functionality of sheet insert tab by doing something like this

workbook.Protect(Type.Missing, true, true);

also you could take a look at the following link Check this link

Hope this helps

Answer 2

Well, you may try this Link to add control to your Workbook then

add a sheet using this piece of code

Excel.Worksheet newWorksheet;
newWorksheet = (Excel.Worksheet)Globals.ThisWorkbook.Worksheets.Add(
missing, missing, missing, missing);

hope that helps.