CopyFieldToField.cs

using System;
using System.Net;
using System.Text.RegularExpressions;
using Sitecore.Data.Items;
using Sitecore.Rules;
using Sitecore.Rules.Actions;

namespace TAC.Internet.Web.CMS.Client.Rules.ItemSaved
{
    public class CopyFieldToField<T> : RuleAction<T> where T : RuleContext
    {
        public string FieldSource
        {
            get;
            set;
        }

        public string FieldTarget
        {
            get;
            set;
        }
        public override void Apply(T ruleContext)
        {
            try
            {
                using (new EditContext(ruleContext.Item, true, false))
                {
                    var item = ruleContext.Item;
                    item.Editing.BeginEdit();
                    var fieldValue = Regex.Replace(item.Fields[FieldSource].Value, "<.*?>", string.Empty);
                    item.Fields[FieldTarget].Value = WebUtility.HtmlDecode(fieldValue);
                    item.Editing.EndEdit();
                }
            }
            catch (Exception e)
            {
                log.Warn(e, string.Format("Rule 'Copy Field To Field' threw an exception on item ID {0}", ruleContext.Item.ID));
            }
        }
    }
}