ExtractValues and Serialization.

Question

User-1825738080 posted

I have a problem creating a fieldtemplate control that renders a edit/insert/readonly template for a generic IList of a serializable item.

Here is a video that shows how I get the error.

http://www.screencast.com/t/e7SbiC8G

{"Error serializing value 'System.Collections.Generic.List`1[FlexiCommerce.Components.Category]' of type 'System.Collections.Generic.List`1[[FlexiCommerce.Components.Category, FlexiCommerce, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].'"}

"   at System.Web.UI.ObjectStateFormatter.SerializeValue(SerializerBinaryWriter writer, Object value)\r\n   at System.Web.UI.ObjectStateFormatter.Serialize(Stream outputStream, Object stateGraph)\r\n   at System.Web.UI.ObjectStateFormatter.Serialize(Object stateGraph)\r\n   at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Serialize(Object state)\r\n   at System.Web.UI.Util.SerializeWithAssert(IStateFormatter formatter, Object stateGraph)\r\n   at System.Web.UI.HiddenFieldPageStatePersister.Save()\r\n   at System.Web.UI.Page.SavePageStateToPersistenceMedium(Object state)\r\n   at System.Web.UI.Page.SaveAllState()\r\n   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)"

 

    public partial class Categories_Edit : FieldTemplateUserControl
    {
        private IList<category> categories;

        public override void DataBind()
        {
            if (Host.Mode == DataBoundControlMode.Edit)
            {
                categories = FieldValue as IList<category>;
            }
            base.DataBind();
        }

        protected override void ExtractValues(System.Collections.Specialized.IOrderedDictionary dictionary)
        {

            IList<category> newcategories = new List<category>();
            foreach (RadTreeNode node in RadTreeViewCategories.CheckedNodes)
            {
                Category category = FlexiCommerce.Context.Persister.Get(int.Parse(node.Value)) as Category;
                if (category != null)
                    newcategories.Add(category);
            }
            dictionary[Column.Name] = newcategories;
        }

        protected void TreeView_DataBound(object sender, EventArgs e)
        {

            if (this.Host.Mode == DataBoundControlMode.Edit)
            {
                foreach (Category c in categories)
                {
                    RadTreeNode node = RadTreeViewCategories.FindNodeByValue(c.ID.ToString());
                    if (node != null)
                    {
                        node.Checked = true;
                        node.ExpandParentNodes();
                    }
                }
            }


        }
    }</category></category></category></category>

 

 

Answer 1

User-330204900 posted

Hi Theonlylawislove, have a look at this article here there is a response about half way down mentioning a similar problem ans possible solution.

Answer 2

User-1825738080 posted

 

Hi Theonlylawislove, have a look at this article here there is a response about half way down mentioning a similar problem ans possible solution.

Thank you so much!

  

        [NonSerialized]
        private IList<product> products = new List<product>();</product></product>

 

That did the trick!