Publishing Custom Forms in Outlook

Question

Good day!

I want to publish Custom Forms to the Personal Folder of the outlook based in .oft files. The VB code its very easy, the hardest thing its to pass it to C# because the outlook object library is very tight.

This is the VB original Code:

'Add Project  Reference: Microsoft Outlook 11.0 Object Library (mstoul.olb)

Sub PublishFromFile()
    Dim filename As String
    Dim Temp As String
    Dim endpos As Integer
    Dim mylength As Integer
    Set myOlApp = GetObject("", "Outlook.Application")
   
    filename = Dir$("C:\OutlookForms\*.oft", vbNormal)
   
    Do Until filename = ""
        mylength = Len(filename)
      
        endpos = InStr(1, filename, ".oft", 1)
        strTemp = Trim(Mid(filename, 1, endpos - 1))
       
        Set myItem = myOlApp.CreateItemFromTemplate("C:\OutlookForms\" & filename)
        Set myForm = myItem.FormDescription
        myForm.Name = strTemp
        myForm.PublishForm olPersonalRegistry
        filename = Dir$
    Loop
   
End Sub

This is my C# code:

            while (filename!="")
            {
                mylenght = filename.Length;
                endpos = filename.IndexOf(".oft",1,1);
                strTemp= filename.Substring(1,endpos -1);

                aux=path2 + filename;               
                Folders folder ;
                //Here is the hard stuff
                //Create item from template file (.oft)
                Items  myItem = (Items)outLookAPP.CreateItemFromTemplate(aux,folder);
                //Create a form to publish
                FormDescription myForm =(FormDescription)myItem.FormDescription;                             //Assign the name
                myForm.Name=strTemp.ToString();
                //Publish de Form
                myForm.PublishForm(Outlook.OlFormRegistry.olPersonalRegistry,folder );
            }


I dont have compile errors, just a runtime error that sayts : cannot cast object , exactly in this line:

Items  myItem = (Items)outLookAPP.CreateItemFromTemplate(aux,folder);

Has somebody done something like this before.

I have tryed different code to publish Contacts, Tasks, etc in Outlook, the problem comes when publishing Custom Forms, I don't know what object to use. I only have Mail, Item, Contact, Task, etc option, but not a Form object.

Thanks in advance.!