Add TaxonomyFieldValue to a TaxonomyFieldValueCollection inside my CSOM code

Question

I am creating a TaxonomyFieldValueCollection as follow:-

TaxonomyField deptField = clientContext.Web.GetList("/sites/Filing/lists/" + "FilingSystem").Fields.GetByInternalNameOrTitle("Fund") as TaxonomyField;
TaxonomyFieldValueCollection tfvc = new TaxonomyFieldValueCollection(clientContext,null,deptField);

but i am not sure how i can add new TaxonomyFieldValue() { TermGuid = f.Id.ToString(), WssId = -1, Label = f.Name } to the tfvc? Thanks

Answer 1

We can add values to TaxonomyFieldValueCollection using TaxonomyFieldValueCollection.PopulateFromLabelGuidPairs method

TaxonomyFieldValueCollection tfvc = new TaxonomyFieldValueCollection(Context, null, targetField);

tfvc.PopulateFromLabelGuidPairs(@"label|b3705gudic4dc4071");

tfvc.PopulateFromLabelGuidPairs(@"label2|b705gudicc4565465");

targetField.SetFieldValueByValueCollection(targetitems, tfvc);

targetitems.Update(); context.ExecuteQuery();

More references:

• https://www.sharepointpals.com/post/how-to-update-the-taxonomy-field-single-value-or-multiple-value-using-c-patterns-and-practices-in-sharepoint-office-365/
• https://unnieayilliath.com/2015/08/24/sharepoint-2013-updateclear-taxonomy-field-value-using-c-csom/

BR, Baker