Get base and top level of a selected column.

[annp_mth]

Hello everyone,

I'm a Revit API newbie. How can I get base and top level of a selected column? The following codes don't work:

UIDocument uidoc = new UIDocument(Document);
Document doc = uidoc.Document;
ElementSet col = uidoc.Selection.Elements;
foreach(Element e in col)
{
Parameter pB = e.get_Parameter(BuiltInParameter.FAMILY_BASE_LEVEL_PARAM);
Parameter pT = e.get_Parameter(BuiltInParameter.FAMILY_TOP_LEVEL_PARAM);
TaskDialog.Show("Column Levels", pB.AsString()+" & "+pT.AsString());
}

I'm using Revit One Box 2013. Thank for any help!

[jeremytammik · Accepted solution]

Dear annp_mth,

As a newbie, I would recommend installing and using RevitLookup before you try anthing else at all.

If you do not know how, please work through the getting started materials before that:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#2

Once you have RevitLookup up and running, you can insert a column manually through the user interface and explore its parameters in RevitLookup to answer this question and the unending list of other questions that arise on a daily , hourly or even per-minute basis during any add-in development.

For a more powerful approach still, install an interactive interpreted programming shell for deeper and more intimate database exploration, e.g. like this:

http://thebuildingcoder.typepad.com/blog/2013/11/intimate-revit-database-exploration-with-the-python...

Good luck, and have fun!

Best regards,

Jeremy

[annp_mth]

Hello Jeremy,

Your blog at TheBuildingCoder is one of my favourite blogs about Revit API. The 2 built in parameters in my codes were found out by using Snoop Current Selection. After reading your reply, I've studied deeper and found out why I were wrong. My new code doesn't look professionally but it worked (C# is not my field):

	   UIDocument  uidoc = new UIDocument(Document);
            Document doc = uidoc.Document;
            ElementSet colcot = uidoc.Selection.Elements;
            foreach(Element e in colcot)
    		{
				Parameter pB = e.get_Parameter(BuiltInParameter.FAMILY_BASE_LEVEL_PARAM);
				Element mB = doc.GetElement(pB.AsElementId());
				Parameter pT = e.get_Parameter(BuiltInParameter.FAMILY_TOP_LEVEL_PARAM);
				Element mT = doc.GetElement(pT.AsElementId());
				TaskDialog.Show("aaa",mB.Name+"&"+mT.Name);
    		}

 Thank you very much! 🙂

[jeremytammik]

Dear annp_mth,

Great!

Thank you very much for the appreciation!

I am glad you find the blog useful, and are using RevitLookup.

Your code looks perfectly fine to me.

Congratulations on solving it!

Cheers,

Jeremy