添加button在worksheet中
1.
Shapes Object (Excel)
Reference:http://technet.microsoft.com/zh-cn/library/ff841148
2. OLEObject
4.这个还没有读,应该不错
http://codeidol.com/csharp/c-sharp-in-office/Using-Windows-Forms-in-VSTO/Adding-Controls-at-Runtime/
新增worksheet
http://msdn.microsoft.com/en-us/library/6fczc37s(v=vs.90).aspx
密码保护
http://msdn.microsoft.com/en-us/library/microsoft.office.tools.excel.worksheet.protect(VS.80).aspx