[CSOM] How to use CSOM to add a Enterprise Keywords column to a content type

Question

Based on information given in following blogs, 
http://sadomovalex.blogspot.com/2011/05/add-enterprise-keywords-field-into.html
I wrote this code to Add an Enterprise Keywords column to a SharePoint content type. the  code runs fine... but when I go to the content type definition in the UI I don't see any column other than title.
ContentTypeCreationInformation contentType = new ContentTypeCreationInformation();
contentType.Name = "MyCT";
contentType.Group = "MyGroup";
contentType.ParentContentType = itemCt;
ct = web.ContentTypes.Add(contentType);
web.Update();
c.ExecuteQuery();
Field f1;
Field f2;
FieldCollection collFields = web.Fields;
var siteColumns = c.LoadQuery(collFields);
c.ExecuteQuery();
foreach (var col in siteColumns) {
if (col != null) {
if (col.Title.Equals("TaxKeywordTaxHTField")) {
f1 = col;
if (col.Title.Equals("Tax Catch All Column")) {
f2 = col;
FieldLinkCreationInformation fieldLink = new FieldLinkCreationInformation();
fieldLink.Field = f1;
myContentType.FieldLinks.Add(fieldLink);
f1.Update();
FieldLinkCreationInformation fieldLink2 = new FieldLinkCreationInformation();
fieldLink2.Field = f2;
myContentType.FieldLinks.Add(fieldLink2);
f2.Update();
web.Update();
c.ExecuteQuery();
But when I go into SharePoint UI and try to see the content of my new content type. it only has a title column. there is no Enterprise Keyword column.
How can I add a enterprise keyword column?
val it: unit=()

Answer 1

Hi,
For this issue, I'm trying to involve someone familiar with this topic to further look at it.
Thanks,
Qiao
Forum Support
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Qiao Wei
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