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Set List Content Type Column Required in SharePoint using CSOM

The example in this topic show how to use CSOM to Set List Content Type Column Required in SharePoint
  • Please follow the steps below to execute the code in Visual Studio using Console Application. You can customize the solution according to your requirements.
  • Check the article to Connect to SharePoint context using CSOM. This is very helpful if you are doing any programming in CSOM.
  • Don't forget to use the assemblies as mentioned in the code.

How to run CSOM code in SharePoint?

  • Open your Visual Studio.
  • From the template, select Console Application as shown in the screenshot
  • Select the .Net Framework version from the top drop-down as well. You can also change the .Net Framework after creating the solution.
  • Enter Project Name, Location and Solution Name and click on OK.
  • create console application using Visual Studio
  • Now your program.cs file will open. Copy the code in main function.
  • Once you are done with your code, just hit F5 or Run the application.

  • using Microsoft.SharePoint.Client;
  • using System.Linq;
  •  
  • using (ClientContext clientContext = new ClientContext("http://MyServer/sites/MySiteCollection"))
  • {
  • // clientcontext.Web.Lists.GetById - This option also can be used to get the list using List GUID
  • // This value is NOT List internal name
  • List targetList = clientContext.Web.Lists.GetByTitle("a b");
  •  
  • clientContext.Load(targetList.ContentTypes);
  • clientContext.ExecuteQuery();
  • ContentTypeCollection contentTypeCollection = targetList.ContentTypes;
  •  
  • // Mention Target Content Tye Name here
  • ContentType targetContentType = (from contentType in contentTypeCollection where contentType.Name == "Event" select contentType).FirstOrDefault();
  •  
  • // Code to set content type field required.
  • if (targetContentType != null)
  • {
  • // Mention the Field name here
  • Field field = targetContentType.Fields.GetByInternalNameOrTitle("Category");
  • clientContext.Load(field);
  • clientContext.ExecuteQuery();
  •  
  • targetContentType.FieldLinks.GetById(field.Id).Required = true;
  •  
  • // UpdateChildren - bool, this value indicates whether the children content type(inheriting from this Content Type) needs to be updated
  • targetContentType.Update(false);
  • clientContext.ExecuteQuery();
  • }
  • }

Similar examples using different APIs:

Thank you for reading this article. This code was tested in SharePoint 2013

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