I need to tag a lot of pages with the tag I like it.

Is there any way of doing it programmatically? (i.e. PowerShell)


Reputation class from Microsoft.Office.Server.ReputationModel namespace (CSOM assembly Microsoft.SharePoint.Client.UserProfiles.dll) contains the following method:

public static ClientResult<int> SetLike(ClientRuntimeContext context, string listID, int itemID, bool like)

The following example demonstrates how to set Like for a List Item using SharePoint 2013/Online CSOM in PowerShell:


Function Get-SPOCredentials([string]$UserName,[string]$Password)
    $SecurePassword = $Password | ConvertTo-SecureString -AsPlainText -Force
    return New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName, $SecurePassword)

$ctx = New-Object Microsoft.SharePoint.Client.ClientContext($Url)
$ctx.Credentials = Get-SPOCredentials -UserName $UserName -Password $Password
$result = [Microsoft.Office.Server.ReputationModel.Reputation]::SetLike($ctx,$listId,$ItemId,$true)
  • 2
    First answer I've come across to clearly indicate that the "like" equivalent for managed CSOM resides in the Microsoft.SharePoint.Client.UserProfiles.dll assembly and not a "CSOM version" of Microsoft.Office.Server.ReputationModel. This isn't as obvious as it should be in the documentation. – nsturdivant Jan 2 '16 at 6:50

See the solution implemented in C# here.

You should either use the Reputation class:

Reputation.SetLike(listID, itemID, true);

or via updating the item’s LikesCount and LikedBy fields:

SPFieldUserValueCollection likedBy = new SPFieldUserValueCollection(web, item["LikedBy"].ToString());
SPUser user = web.EnsureUser("YOURDOMAIN\\USERNAME");
SPFieldUserValue newUser = new SPFieldUserValue(web, user.ID, user.Name);
int likes = likedBy.Distinct().Count();
item["LikesCount"] = likes;
item["LikedBy"] = likedBy;item.SystemUpdate(false);

You can find another discussions of the same issue here and here.

The PowerShell equivalent of the first option should be:

[Microsoft.Office.Server.ReputationModel.Reputation]::SetLike($listId, $itemId, $True)

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