In OLE/COM Object Viewer, I found Excel Interface _Worksheet like this.

[uuid(000208D8-0000-0000-C000-000000000046)]
[helpcontext(0x00020010), dual, nonextensible]
dispinterface _Worksheet
{
    //   :
    //   :
[id(0x000000c5), propget, helpcontext(0x000100c5)]
Range* Range([in] VARIANT Cell1, [in, optional] VARIANT Cell2);
    //   :
    //   :
}

In C#, I rewrite the above code like this.

[ComImport, Guid("00020820-0000-0000-C000-000000000046")]
public class WorksheetClass{}

[ComImport, CoClass(typeof(WorksheetClass))]
[Guid("000208D8-0000-0000-C000-000000000046")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface Worksheet
{
    //    :
    //    :
    Range Range(object Cell1, object Cell2);
    //    :
    //    :
}

but Error...

*******************************************************************
An unhandled exception of type
   'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll

Additional information: Member not found.
*******************************************************************

How Can I .....?