Insert OLE Object Using C#

I don't know if this is where I should post this thread, but I'm looking for this for the last 4 days, so any thing will help...

I'm trying to insert OLE object using c#, but two method I've found are not working.

excel object for .net (ws is worksheet object)
1.
ws.Shapes.AddOLEObject(XlOLEType.xlOLEEmbed, fileName, false, false, missing, missing, missing, 50, 50, 150, 200);

creating new macro and execute it (security problems)
2.
string macro = "";
macro += "Sub addObject()
";
macro += " msgbox("123")
";
macro += " OLEObjects.Add(Filename:="c:\123.txt", Link:=False, DisplayAsIcon:=False).Select
";
macro += "End Sub";

Microsoft.Vbe.Interop.VBComponent module = null;
Console.WriteLine(macro);
module = wb.VBProject.VBComponents.Add(Microsoft.Vbe.Interop.vbext_ComponentType.vbext_ct_StdModule);
module.CodeModule.AddFromString(macro);

ws.Application.Run("addObject()", missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);