Hi,

In order to hide the ID property from edit mode, there are two things you need to do.
First, to hide in from the create/edit template, simply add the  ScaffoldColumn(false) attribute as you've already did.

Second, to hide it from the table, you'll need to add a custom editor descriptor and tell the editor to exclude the ID column. Here's an example:

    public class MyCustomCollectionEditorDescriptor : CollectionEditorDescriptor<Question>
    {
        public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)
        {
            this.GridDefinition.ExcludedColumns.Add(nameof(Question.Id));
            base.ModifyMetadata(metadata, attributes);
        }
    }

Hope that helps!

As for creating a new ID when creating a new object, you could simply add a backing field and assign a new value in the getter:

        private string _id;
        [ScaffoldColumn(false)]
        public string Id
        {
            get
            {
                if (string.IsNullOrEmpty(_id))
                    _id = Guid.NewGuid().ToString();

                return _id;
            }
            set { _id = value; }
        }

Thank you Per Magne,

This is exactly what I'm looking for and this codes work great :)

I can´t get this to work unfortunately. Not sure if I´m missing something or if it´s no longer working for later version of CMS (we´re running 10.9.0).

I have a page type called StartLandingPage. There I have a property of type PropertyList, it looks like this:

[EditorDescriptor(EditorDescriptorType = typeof(CollectionEditorDescriptor<IntegrationToolModel>))]
public virtual IList<IntegrationToolModel> ToolIntegrationTabs { get; set; }

I then have an EditorDescriptor class that looks like this:

public class IntegrationToolEditorDescriptor : CollectionEditorDescriptor<IntegrationToolModel>
    {
        public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)
        {
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.ApiUrl));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.HideOnDesktop));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.HideOnMobile));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.FormResult));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.CountryCode));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.DestinationUrl));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.ResultPage));
            base.ModifyMetadata(metadata, attributes);
        }
    }

Where I specify a bunch of properties of IntegrationToolModel object that I don´t want to show in the table view. But it´s not working, they are not hidden from the view.

What am I missing or doing wrong?

I know this is an older post, but just in case someone is having the same issue like Petra, you need to:

• remove the EditorDescriptor attribute from your property, because it tells Episerver to use the default editor
• register the new CollectionEditorDescriptor using the EditorDescriptorRegistration attribute, and setting the correct TargetType property

The updated code would look like this:

public virtual IList<IntegrationToolModel> ToolIntegrationTabs { get; set; }

[EditorDescriptorRegistration(TargetType = typeof(IList<IntegrationToolModel>))]
public class IntegrationToolEditorDescriptor : CollectionEditorDescriptor<IntegrationToolModel>
    {
        public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)
        {
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.ApiUrl));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.HideOnDesktop));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.HideOnMobile));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.FormResult));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.CountryCode));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.DestinationUrl));
            GridDefinition.ExcludedColumns.Add(nameof(IntegrationToolModel.ResultPage));
            base.ModifyMetadata(metadata, attributes);
        }
    }

Big thanks Cristi! This works just like I wanted! Nice!