Variable does not exist in the current context in Blazor component

I am building a Blazor (Blazor server) project in .NET 6 and I have come to a problem, in one component I can declare a variable, but when I try to do something with that variable immediately after I declare it, it "does not exist in the current context".

Resources.razor

@using Models<div><h2>Resources</h2><table><thead><tr><th>Name</th><th>State</th></tr></thead><tbody>        @foreach (Resource resource in ResourceList)        {<tr><td>@resource.Name</td><td>@resource.DisplayStatus</td></tr>         }</tbody></table></div>@code {    public List<Resource> ResourceList { get; set; }    ResourceList = new List<Resource>(); // this line throws an error (IDE1007: the name 'ResourceList' does not exist in the current context)    ResourceList.Add(new Resource()); // this one too}

I have tried moving it to the new file Resources.razor.cs but it has the same problem. It is not working not just for List<Resource> but even for string or int. I have also tried to make a completely new razor component and try to rewrite it but it still does not work.