How to Like list item in SharePoint 2013 Programmatically using CSOM

In this blog you will learn how to implement Like in SharePoint List Programmatically.
Here in this code we have explored about Likes fields and how users like any Custom List item.

Operations I am performing here

• Get the List
• Get the List Items
• Get Site Users
• Get Liked Users And Likes Count

	Web web = clientContext.Web
	List list = web.Lists.GetByTitle("Products");
	CamlQuery queryItem = new CamlQuery();
	queryItem.ViewXml = "<View><Query><Where><Eq><FieldRef Name=\"Title\"/><Value Type=\"Text\">Spices</Value></Eq></Where></Query></View>";
	ListItemCollection listItems = list.GetItems(queryItem);
	clientContext.Load(listItems);
	clientContext.ExecuteQuery();
	ListItem item = listItems[0];
	clientContext.Load(web.SiteUsers);
	clientContext.ExecuteQuery();
	User user = web.SiteUsers[0];
	foreach (User newUser in clientContext.Web.SiteUsers)
	if (newUser.Title == "Arzoo Soni")
	{
	user = newUser;
	break;
	}
	bool hasLiked = false;
	FieldUserValue[] likedByUsers = (FieldUserValue[])item["LikedBy"];
	List<FieldUserValue> newFieldUsers = new List<FieldUserValue>();
	if (likedByUsers != null && likedByUsers.Length > 0)
	foreach (FieldUserValue likedFieldUser in likedByUsers)
	if (likedFieldUser.LookupValue == user.Title)
	hasLiked = true;
	if (!hasLiked)
	{
	if (likedByUsers != null)
	foreach (FieldUserValue likedFieldUser in likedByUsers)
	newFieldUsers.Add(likedFieldUser);
	newFieldUsers.Add(FieldUserValue.FromUser(user.LoginName));
	item["LikedBy"] = newFieldUsers;
	item["LikesCount"] = Convert.ToInt32(item["LikesCount"]) + 1;
	item.Update();
	clientContext.Load(item);
	clientContext.ExecuteQuery();
	}

view raw LikeItem.cs hosted with ❤ by GitHub

Thanks for reading!!