#client side object model

Basically, in CSOM, there is no direct property to get the item versions from a List Item. But by using "Lists Web Service"(/_vti_bin/Lists.asmx) we can get all versions and properties information for each item inside Custom List or Document Library.

To get the above-required functionality, first of all, we have added the "Lists Web Service" in the required project.

In this blog, I am going share all codes how we can get all List Items version by using "Lists Web Service". We all know how to add a service inside a project.

I am using a simple Console application to iterate all item versions information. Please follow the below code...

using System; using System.Net; using System.Xml;

using Microsoft.SharePoint.Client;

namespace ConsoleApp1 {    class Program    {        static void Main(string[] args)        {            ClientContext context = null;            List list = null;            ListItemCollection itemCollection = null;            ListItem item = null;

           string userName = string.Empty;            string password = string.Empty;            string dateHistory = string.Empty;            string commentHistory = string.Empty;            string editor = string.Empty;            string loginName = string.Empty;

           try            {                using (context = new ClientContext("http://SourceWebUrl"))                {                    userName = "UserName";                    password = "PassWord";                    

                   // Setting credential for the above site                                        context.Credentials = new NetworkCredential(userName, password);                    context.Load(context.Web);                    context.ExecuteQuery();

                   // Getting list by Title                    list = context.Web.Lists.GetByTitle("Custom List");                    context.Load(list, L => L.Id);

                   // Getting all items from selected list using caml query                    itemCollection = list.GetItems(CamlQuery.CreateAllItemsQuery());

                   //Loading selected list items                    context.Load(itemCollection, IC => IC.Include(I => I.Id, I => I.DisplayName));                    context.ExecuteQuery();

                   if (itemCollection != null && itemCollection.Count > 0)                    {                        for (int iCount = 0; iCount < itemCollection.Count; iCount++)                        {                            try                            {                                item = itemCollection[iCount];

                               ListService.Lists listService = new ListService.Lists();                                listService.Url = context.Url + "/_vti_bin/Lists.asmx";                                listService.Credentials = context.Credentials;

                               //Getting all item versions from custon list item using List Web Service                                XmlNode nodeVersions = listService.GetVersionCollection(list.Id.ToString(), item.Id.ToString(), "_UIVersionString");

                               //looping all versions and getting 'Modified' and 'Editor' property of each version                                foreach (XmlNode xNode in nodeVersions)                                {                                    try                                    {                                                                              dateHistory = xNode.Attributes["Modified"].Value;                                        dateHistory = FormatDateFromSP(dateHistory);                                        commentHistory = xNode.Attributes["_UIVersionString"].Value;                                        loginName = xNode.Attributes["Editor"].Value;                                                                            }                                    catch { }                                }                            }                            catch (Exception ex) { }                        }                    }                }            }            catch (Exception ex) { }        }

       private static string FormatDateFromSP(string dateHistory)        {            string result;

           result = dateHistory.Replace("T", " ");            result = result.Replace("Z", "");

           return result;        }            } }

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