Error while reading indesign(.indd) file through COM object in c#

Question

I want to read InDesign(.indd) file in c#. I have installed adobe InDesignCS6.
I have added COM reference of 'Adobe InDesign CS6 Type Library' in my c# application.
Code snippet is as follows.
        [STAThread]
        static void Main(string[] args)
            InDesign.Application app = (InDesign.Application)COMCreateObject("InDesign.Application");
            Document doc = app.ActiveDocument;
            Page page = doc.Pages[1];
            TextFrame frame = page.TextFrames[1];
            Console.WriteLine(frame.Contents.ToString());
        public static object COMCreateObject(string sProgID)
            // We get the type using just the ProgID
            Type oType = Type.GetTypeFromProgID(sProgID);
            if (oType != null)
                return Activator.CreateInstance(oType);
            return null;
But the first line itself throwing an following error while type casting output of COMCreateObject method into InDesign.Application type.
Error :
Unable to cast COM object of type 'System.__ComObject' to interface type 'InDesign.Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{ABD4CBB2-0CFE-11D1-801D-0060B03C02E4}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Kindly help me. Its urgent.

Answer 1

try this,
InDesign.Application app = (InDesign.Application)COMCreateObject("InDesign.Application.CS6");