using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint.Client;
namespace COM
{
class Program
{
static void Main(string[] args)
{
// siteURL is the string that contains the site URL
string siteUrl = "http://serverName:50000/sites/Testing";
// ClientContext object is used to get the context for the SharePoint objects
ClientContext clientContext = new ClientContext(siteUrl);
Web web = clientContext.Web;
List list = web.Lists.GetByTitle("CustomList");
Field field = list.Fields.GetByTitle("Calculated");
FieldCalculated calculatedField = clientContext.CastTo<FieldCalculated>(field);
calculatedField.Formula = "=UPPER([Title])";
calculatedField.Update();
clientContext.ExecuteQuery();
}
}
}