Hi Michael,

Can you perhaps share a bit more of your code?

Ideally you should wait converting the collection to a list until you're done manipulating your collection - eg. after you have applied pagination. Otherwise you may end up converting to a list multiple times.

string PageTheme = Model.Content.GetPropertyValue

var selection = Umbraco.TypedContent(1999).Children("mOPNewsPost").Where(x => x.IsVisible()).OrderBy("CreateDate");

var numberOfPosts = Model.Content.GetPropertyValue<int>("newsItems");

    var newsposts = selection.OrderByDescending(x => x.CreateDate).Where(x => x.NewType2 == @PageTheme).ToList();

    var pageCount = (int)Math.Ceiling((double)newsposts.Count / (double)numberOfPosts);
        var page = 1;
        if (!string.IsNullOrEmpty(Request.QueryString["page"]))
        {
            int.TryParse(Request.QueryString["page"], out page);
            if (page <= 0 || page > pageCount)
            {
                page = 1;
            }
        }
        //Gets the blogposts for the current page
        var pagedNewsposts = newsposts.Skip((page - 1) * numberOfPosts).Take(numberOfPosts).ToList();

}

@foreach(var item in pagedNewsposts){ var PageType = item.GetPropertyValue

        </div>


   <div class="col-md-2">
<h4>Filter</h4>



<a href="\news\" class="badge badge-success">All Items</a>
<a href="?NewsType=News" class="badge badge-primary">News</a>
<a href="?NewsType=Reports" class="badge badge-secondary">Reports</a>

<a href="?NewsType=Tax Changes" class="badge badge-danger">Tax Changes</a>
<a href="?NewsType=Regulation Changes" class="badge badge-warning">Regulation Changes</a>
<a href="?NewsType=LGPS Reform" class="badge badge-info">LGPS Reform</a>



</div>
@{
 if (newsposts.Count > numberOfPosts)
{

<div class="col-md-12">

        <nav class="navbar navbar-expand-lg justify-content-md-center">

            @if (page <= 1)
            {
                <span class="nav-link nav-link--black nav-link--disabled">Prev</span>
            }
            else
            {
                <a class="nav-link nav-link--black" href="@(Model.Content.Url + "?page=" + (page - 1))">Prev</a>
            }

            @for (int i = 1; i <= pageCount; i++)
            {
                <a class="nav-link nav-link--black @(page == i ? "nav-link--active" : null)" href="@(Model.Content.Url + "?page=" + i)">@i</a>
            }
            @if (page == pageCount)
            {
                <span class="nav-link nav-link--black nav-link--disabled">Next</span>
            }
            else
            {
                <a class="nav-link nav-link--black" href="@(Model.Content.Url + "?page=" + (page + 1))">Next</a>
            }

        </nav>

</div>}
}

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