Updating SP Listitem field value using client object model

Question

I want to update the value of a specific field for the last listitem in a sharepoint list using client object model. I have created a visual webpart and would be calling a webmethod that would update the last listitem in the specified list with the value passed from ascx(design) page. Thanks in advance

Aakash Morya · Answer

If you want to update the list item field value (Metadata value) using CSOM then you can use following code. //StartingwithClientContexttheconstructorrequiresaURLtothe //serverrunningSharePoint. ClientContextcontext= new ClientContext( http://SiteUrl ); //AssumethatthewebhasalistnamedAnnouncements. ListannouncementsList=context.Web.Lists.GetByTitle( Announcements ); //AssumethereisalistitemwithID=1. ListItemlistItem=announcementsList.GetItemById(ItemId to update); //WriteanewvaluetotheBodyfieldoftheAnnouncementitem. listItem[ Body ]= Thisismynewvalue!! ; //Hereyoucangetthevaluefromyourpagecontrol listItem.Update(); context.ExecuteQuery(); For more reference task related to SharePoint List using CSOM you can visit here https://msdn.microsoft.com/en-us/library/office/fp179912.aspx

Ramesh Palaniappan · Answer

Please use and update below example according to your requirement using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.SharePoint; using Microsoft.SharePoint.Client; namespace CreateListItem { class Program { static void Main( string []args) { string siteUrl= http://servername:2525/ ; ClientContextclientContext= new ClientContext(siteUrl); ListoList=clientContext.Web.Lists.GetByTitle( TestList ); ListItemCreationInformationlistCreationInformation= new ListItemCreationInformation(); ListItemoListItem=oList.AddItem(listCreationInformation); oListItem[ Title ]= HelloWorld ; oListItem.Update(); clientContext.ExecuteQuery(); } } }