Sharepoint Online CSOM add list item

Question

Hi,

I am trying to perform a very basic operation of adding a list item to SharePoint online list using the following code :

var context = GetUserContext();
List userResponseList = context.Web.Lists.GetByTitle("UserResponseDetails");
FieldLookupValue linkedLookupItem = new FieldLookupValue();

linkedLookupItem.LookupId = 1;

ListItemCreationInformation userResponseInfo = new ListItemCreationInformation();

newUpdateItem = userResponseList.AddItem(userResponseInfo);

newUpdateItem["LookupField"] = linkedLookupItem;
newUpdateItem["MultilineText"] = "Some sample text";
newUpdateItem[AttemptCount] = 1;

newUpdateItem.Update();

if (context.HasPendingRequest)
{
     await context.ExecuteQueryAsync();
}

Using the above code, I am able update numeric fields, but Lookup, Multiline and single line text fields are not getting saved/updated to SharePoint Online.

I am using .NET Core 2.1 for development.

Please help!

Thanks in advance,

Cheers,

Y

Answer 1

Hi

As for lookup field, please follow this link.

https://sharepoint.stackexchange.com/questions/73252/sharepoint-client-model-and-setting-up-lookup-field

For multi line text, you can directly update it as your above code, please check if the field internal is 

MultilineText

---

Justin Liu Office Servers and Services MVP, MCSE
Senior Software Engineer
Please Vote and Mark as Answer if it helps you.

Answer 2

ensure that internal names of your fields are the same as in the code. And instead of:

if (context.HasPendingRequest)
{
     await context.ExecuteQueryAsync();
}

use simpler synchronous call:

context.ExecuteQuery();

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Blog - http://sadomovalex.blogspot.com
Dynamic CAML queries via C# - https://github.com/sadomovalex/camlex