Set Global Nav in CSOM

I’ve been writing a client side object model script to set up some sites, including setting some the navigation settings on the site. Sadly, Microsoft have written SharePoint to involve at least 3 objects in the navigation settings for a site (PublishingWeb, WebNavigationSettings, and SPNavigation. At least. It’s totally effing bonkers.), and those objects don’t work in quite the same way for CSOM. For example, it’s not clear how to set a site to ‘show subsites’ in the global navigation. Continue reading “Set Global Nav in CSOM”

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Set Global Nav in CSOM

Turn off the Minimum Download Strategy feature in CSOM

I have found that the Minimum Download Strategy can cause issues with some of the JavaScript/JQuery I used in some of my pages – particularly when using Display Templates. I’m not the only person to have problems with it, either. Well, here’s the CSOM to turn it off:

private static void RemoveMinimalDownload(ClientContext clientContext, Web web)
{
 Guid MDSfeature = new Guid("87294C72-F260-42f3-A41B-981A2FFCE37A");
 FeatureCollection features = web.Features;
 clientContext.Load(features);
 clientContext.ExecuteQuery();
 features.Remove(MDSfeature, true);
 clientContext.ExecuteQuery();
}
Turn off the Minimum Download Strategy feature in CSOM

Working with fields in CSOM

I’ve already detailed how to create a new Taxonomy Field in CSOM – here’s the more generic how to create a general field on a list.:

internal static void CreateFields(ClientContext clientContext, List targetList, string xmlDef)
{
 targetList.Fields.AddFieldAsXml(xmlDef, true, AddFieldOptions.AddFieldInternalNameHint);
 clientContext.ExecuteQuery();
}

And as a bonus, here’s how to set a field to be indexed in the client side object model:

internal static void SetIndex(ClientContext clientContext, List list, string fieldName)
{
	Field f = list.Fields.GetByInternalNameOrTitle(fieldName);
	clientContext.Load(f);
	clientContext.ExecuteQuery();
	f.Indexed = true;
	f.Update();
	list.Update();
	clientContext.ExecuteQuery();
}
Working with fields in CSOM

Upload a File with CSOM

This is an example of how to upload a file with the C# Client Side Object Model (CSOM):

internal static File UploadFile(ClientContext clientContext, Web web, string filePath, Folder folder, string fileName, string title)
{
 string target = folder.ServerRelativeUrl + "/" + fileName;
FileCreationInformation fci = new FileCreationInformation();
 fci.Overwrite = true;
 fci.Url = target;
 fci.Content = System.IO.File.ReadAllBytes(filePath);
File uploadedFile = folder.Files.Add(fci);
 uploadedFile.ListItemAllFields["Title"] = title;
 uploadedFile.ListItemAllFields.Update();
 clientContext.ExecuteQuery();
if (uploadedFile.CheckOutType != CheckOutType.None)
 {
 uploadedFile.CheckIn("Initial Upload", CheckinType.MajorCheckIn);
 }
 clientContext.Load(uploadedFile);
 clientContext.ExecuteQuery();
 return uploadedFile;
}

Note that this method also lets you set a title for the document, as well as the file name, and it checks the document in for you if required.

Upload a File with CSOM

What does TaxonomyItem.NormalizeName() do?

So, the client side application I’ve been working on has to sync a LOT of terms to the term store, and I’ve mentioned how I had problems with Managed Metadata labels and the ampersand – and how I fixed them using TaxonomyItem.NormalizeName().

Well, that was fine, but my application was slow – so I started looking at what I could do to eliminate client side object model calls (CSOM). My suspicion was that, as the function was static, it wasn’t doing anything that I couldn’t do in my application, and save a round trip to the server.

So, I opened up reflected and decompiled Microsoft.SharePoint.Taxonomy.dll. Inside I found the code for the following:

Regex _trimSpacesRegex = new Regex(@"s+", RegexOptions.Compiled | RegexOptions.IgnoreCase);
//Normalize name as Taxonomy Service does
string name = _trimSpacesRegex.Replace(termName, " ").Replace('&', 'uff06').Replace('"', 'uff02').Trim();

That’s much, much faster than a round trip to the server, and I learnt that speechmarks are also converted from ASCII to Unicode too.

What does TaxonomyItem.NormalizeName() do?

Managed Metadata Labels and the Ampersand character

I am writing an application to import/generate a number of terms in a term set. I started to get some errors about my code trying to add terms that already exist – but it does check for the existence of terms with a given name.My Code and existence check

You can see that the string comparison for the name of the existing term and the term I want to get/create returns false, and that the terms seem to be different lengths. Well, I tried looking for blank spaces, non-printing characters, carriage returns, etc., and found nothing. Then I looked really closely at the ampersand characters shown in the debugger:

Strings in the Debugger

Yup, they’re different characters. You can see a slightly different shape to each of them – one is wider. Continue reading “Managed Metadata Labels and the Ampersand character”

Managed Metadata Labels and the Ampersand character

What happens with a large TaxonomyHiddenList?

SharePoint’s Taxonomy (or “Managed Metadata”) fields are a bit strange in how they work. In a lot of ways they’re actually like a lookup field, and part of this lookup field is that site collections that use them have a hidden list – called TaxonomyHiddenList – in the root of the site collection. You can find it at /lists/TaxonomyHiddenList/.

Hidden

Each term that is used in a Taxonomy field has it’s label (actually, labels) and other details kind of ‘cached’ in this list, and there is a timer job that will push changes to the terms out into these lists – and therefore to items that refer to the entries in the list. Continue reading “What happens with a large TaxonomyHiddenList?”

What happens with a large TaxonomyHiddenList?