[InDesign C# Script] Problem with textframe.place(imageName)

Question

Hi everyboy !
I am beginning with the InDesign Scripting in C#, and the documentation is very poor. I have a problem and I can't find the solution.
I have to place an image into a textframe on my document's page.
I create my textframe without any problem :
           myDocument.Layers.Add();
        InDesign.Layer lastLayer = (InDesign.Layer) myDocument.Layers[myDocument.Layers.Count];
        InDesign.TextFrame myPicture = myPage.TextFrames.Add(lastLayer, InDesign.idLocationOptions.idUnknown, myPage);
        myPicture.GeometricBounds = new string[4] { myY, myX, myY2, myX2 };
Then I try to place my Image, but I can't find which type of object is returned by .Place méthode :
First try :
InDesign.Graphics myGraphic =  (InDesign.Graphic) myPicture.Place(pathName, false);
And I have got this error :
{System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'InDesign.Graphics'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{C85A4AB3-9492-4C40-8A7B-F8305706C8B8}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
   at Service.createPhotograph(XmlNode photo, Page myPage) in c:\Documents and Settings\melaniep\My Documents\Visual Studio 2005\WebSites\WebSite6\App_Code\Service.cs:line 204}
And I saw this tutorial in javascript for placing images  at http://www.adobe.com/devnet/indesign/pdfs/indesigncs4_scriptingtutorial.pdf
//Display a standard open file dialog box to select a graphic file.
var myGraphicFile = File.openDialog("Choose a graphic file");
//If a graphic file was selected, and if you didn't press Cancel,
//place the graphic file on the page.
if((myGraphicFile != "")&&(myGraphicFile != null)){
var myGraphic = myDocument.pages.item(0).place(myGraphicFile);
//Since you can place multiple graphics at once, the place method
//returns an array. To get the graphic you placed, get the first
//item in the array (JavaScript arrays start with item 0).
myGraphic = myGraphic[0];
So I tried :
InDesign.Graphics myGraphics =  (InDesign.Graphics) myPicture.Place(pathName, false);
            InDesign.Graphic myGraphic = (InDesign.Graphic) myGraphics[0];
But I have got the same error.
Someone have an idea? I am really lost, and I don't know what to do :'(
Another little question.
My picture is smaller than my textFrame.
And I want my picture fits to the texframe.
MyGraphic.HorizontalScale = widthOfTextFrame
MyGraphic.VerticalScale = heightOfTextFrame
Does it works? Or Am I in the wrong way?
Thank you very much (and sorry for my bad english, I am french )

Answer 1

Are you also beginning with C# ? Then please reconsider, and follow tried paths with JavaScript - plenty more support around here. You could at least write a draft of your program, and only if it works move it to C#.
To get further on your issue, I'd follow the idea outlined here:
http://msdn.microsoft.com/en-us/library/ms173183(VS.80).aspx
If that does not work, I'm sorry - last time I used C# is years ago, and targeting some pocket PC. No InDesign involved.
Dirk