SharePoint How can I programmatically add items to a custom list instance

Question

I am really looking for either a small code snippet  or a good tutorial on the subject    I have a C  console app that I will use to somehow add list items to my custom list  I have created a custom content type too  So not sure if I need to create an C  class from this content type too  Perhaps not    Thanks in advance

User · Answer

This is how it was on the Microsoft site, with me just tweaking the SPSite and SPWeb since these might vary from environment to environment and it helps not to have to hard-code these:

using (SPSite oSiteCollection = new SPSite(SPContext.Current.Site.Url))
{
    using (SPWeb oWeb = oSiteCollection.OpenWeb(SPContext.Current.Web))
    {
        SPList oList = oWeb.Lists["Announcements"];
        // You may also use 
        // SPList oList = oWeb.GetList("/Lists/Announcements");
        // to avoid querying all of the sites' lists
        SPListItem oListItem = oList.Items.Add();
        oListItem["Title"] = "My Item";
        oListItem["Created"] = new DateTime(2004, 1, 23);
        oListItem["Modified"] = new DateTime(2005, 10, 1);
        oListItem["Author"] = 3;
        oListItem["Editor"] = 3;
        oListItem.Update();
    }
}

Source: SPListItemClass (Microsoft.SharePoint). (2012). Retrieved February 22, 2012, from http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.splistitem.aspx.

User · Answer

I think these both blog post should help you solving your problem   http   blog the-dargans co uk 2007 04 programmatically-adding-items-to html http   asadewa wordpress com 2007 11 19 adding-a-custom-content-type-specific-item-on-a-sharepoint-list   Short walk through    Get a instance of the list you want to add the item to  Add a new item to the list      SPListItem newItem   list AddItem     To bind you new item to a content type you have to set the content type id for the new item     newItem  ContentTypeId      lt Id of the content type gt    Set the fields specified within your content type  Commit your changes     newItem Update

User · Answer

To put it simple you will need to follow the step    You need to reference the Microsoft SharePoint dll to the application  Assuming the List Name is Test and it has only one Field  Title  here is the code           using  SPSite oSite new SPSite  http   mysharepoint                  using  SPWeb oWeb oSite RootWeb                        SPList oList   oWeb Lists  Test                SPListItem oSPListItem   oList Items Add                oSPListItem  Title      Hello SharePoint               oSPListItem Update                      Note that you need to run this application in the Same server where the SharePoint is installed  You dont need to create a Custom Class for Custom Content Type

User · Answer

I had a similar problem and was able to solve it by following the below approach  similar to other answers but needed credentials too     1- add Microsoft SharePointOnline CSOM by tools- NuGet Package Manager- Manage NuGet Packages for solution- Browse-  select and install  2- Add  using Microsoft SharePoint Client     then the below code          string siteUrl    https   yourcompany sharepoint com sites Yoursite           SecureString passWord   new SecureString             var password    Your password here           var securePassword   new SecureString            foreach  char c in password                        securePassword AppendChar c                     ClientContext clientContext   new ClientContext siteUrl           clientContext Credentials   new SharePointOnlineCredentials  Username domain nz   securePassword    passWord           List oList   clientContext Web Lists GetByTitle  The name of your list here            ListItemCreationInformation itemCreateInfo   new ListItemCreationInformation            ListItem oListItem   oList AddItem itemCreateInfo           oListItem  PK      1           oListItem  Precinct      Mangere           oListItem  Title      Innovation           oListItem  Project x005F x0020 Name      test from C            oListItem  Project x005F x0020 ID      ID 123 from C            oListItem  Project x005F x0020 start x005F x0020 date      2020-05-01 01 01 01           oListItem Update             clientContext ExecuteQuery      Remember that your fields may be different with what you see  for example in my list I see  Project Name   while the actual value is  Project x005F x0020 ID   How to get these values  i e  internal filed values    A few approaches   1- Use MS flow and see them  2- https   mstechtalk com check-column-internal-name-sharepoint-list    or https   sharepoint stackexchange com questions 787 finding-the-internal-name-and-display-name-for-a-list-column  3- Use a C  reader and read your sharepoint list  The rest of operations  update delete   https   docs microsoft com en-us previous-versions office developer sharepoint-2010 ee539976 v 3Doffice 14

User · Answer

You can create an item in your custom SharePoint list doing something like this   using  SPSite site   new SPSite  http   sharepoint          using  SPWeb web   site RootWeb                SPList list   web Lists  My List            SPListItem listItem   list AddItem            listItem  Title      The Title           listItem  CustomColumn      I am custom           listItem Update               Using list AddItem   should save the lists items being enumerated

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