how to add a taxonomy field to a list item SP2010?

Question

I am working with a predefined set of Taxonomy data.

When I create a list item, I'm doing this based on a certain content type. I also want to apply taxonomy fields to this list item.

I'm using SP2010 clientContext object model.

Can someone post some sample code to demonstrate how it is possible to apply the taxonomy (meta data) field to the list item?

Update:

To ask another way, Do I apply the taxonomy field type to the list definition, the content type like any other field? Instead type would be "TaxonomyFieldType". Or do I manually add them on the fly to the list items as I go?

Answer 1

This method uses object model (client context might work but untested)

using (SPSite spSite = new SPSite(this.siteURL))
{
  SPList oList = spSite.RootWeb.Lists[ListName]; 
  SPListItem oListItem = oList.AddItem();

 // Example of normal field 
 oListItem["Title"] = SomeStringTitle;

SPFieldCollection fields = spSite.RootWeb.Lists[oList.ID].Fields;
TaxonomyField fieldToSet = fields.GetFieldByInternalName(StringFieldName) as TaxonomyField ; 

Term term = // You should find the term as required in your function...

fieldToSet.SetFieldValue(oListItem, term);

// Don't forget to update
oListItem.Update();

I use the SetFieldValue (which has some overloads) because you don't need to deal with hidden list this way, it gets the WssID for you (not sure how, but it works).