How to override VBScript GetObject method in .NET

Question

I am having below code in VBScript

' Retrieve the keyword category for page section names
Set SectionCat = TDSE.GetObject(WebdavToUri(getPublicationWebDav(WEBDAV_SECTION_CAT)), 1)
' Retrieve the localized section keyword
Set SectionKeyword = SectionCat.GetKeywordByTitle(meta)

' Open the English translated section keyword
Set SectionKeyword = TDSE.GetObject(SectionKeyword.Id, 1, WEBDAV_UKEN_PUB)

SectionName = SectionKeyword.Title

Where WEBDAV_UKEN_PUB is the WebDavPath, now in VBScript GetObject method we have got option to pass three parameters 1) Item.ID, 2) TDSDefines.OpenModeEditWithFallback and 3) WebDavPath from where to make the object.

Now I want to write same logic in 2009 .Net templating, below is the sample code, I am trying to write but not able to get rid of VBScript Object.

Category cat = engine.GetSession().GetObject(WebdavToUri(getPublicationWebDav(Constants.WEBDAV_SECTION_CAT,package,engine), engine)) as Category;
if (cat != null)
{
//_log.Info("Category" + cat.Title);
Keyword keyword = cat.GetKeywordByTitle(meta);
//_log.Info("keyword 1" + keyword.Title);

keyword = engine.GetObject(Constants.WEBDAV_UKEN_PUB) as Keyword;

//_log.Info("keyword 2 " + keyword.Title);
if (keyword != null)
{
sectionName = keyword.Title;
}
keyword = null;

I am able to create Category object, however when I am trying to make Keyword object its getting failed and giving object reference error.

Do we have any class or method which work same like VBScript GetObject which will make the Object from the passed webdavpath or can somebody can give sample code on this.

Dominic Cronin · Accepted Answer · 2011-10-12 18:49:47Z

2

I think your problem is here:

keyword = engine.GetObject(Constants.WEBDAV_UKEN_PUB) as Keyword;

You are using the WEBDav URL of a publication, and then attempting a dynamic cast to Keyword. You can't cast a Publication to a Keyword, so the cast fails and your keyword variable is assigned null.

Using dynamic casts in this way is an easy way to fool yourself. The "As" keyword (C# keyword not Tridion keyword) should be used when you don't know at compile time what type you expect. If you know that you expect an item of type Keyword, then you should write:

keyword = (Keyword)engine.GetObject(Constants.WEBDAV_UKEN_PUB);

This way - when the cast fails, you'll get an exception that identifies the problem correctly.

answered Oct 12, 2011 at 18:49

Dominic Cronin

6,2002 gold badges26 silver badges57 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

John Saunders · Accepted Answer · 2011-10-12 04:22:38Z

1

In TOM.NET we cannot get an object and specify which pub to read it from, we need to modify the TcmUri to be in context.

So:

Repository context = (Repository)session.GetObject(WEBDAV_UKEN_PUB);
TcmUri keywordInContext = new TcmUri(keyword.Id.ItemId, keyword.Id.ItemType, context.Id.ItemId);
Keyword keyword = (Keyword)session.GetObject(keywordInContext);

edited Oct 12, 2011 at 4:22

John Saunders

162k26 gold badges252 silver badges403 bronze badges

answered Oct 12, 2011 at 4:20

Manoj Singh

7,70734 gold badges125 silver badges202 bronze badges

Collectives™ on Stack Overflow

How to override VBScript GetObject method in .NET

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related