I'm sure I'm doing something stupid here!  I have created a usercontrol wrapper data type which works perfectly when the content is valid but if the content is not valid the property is saved blank (if you go to another node and back again), even if it was perviously saved valid.

Here is my code:

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {

                if (!string.IsNullOrEmpty(_umbracoValue))
                    editorSource.Text = _umbracoValue;

            }
            else if (IsValid)
            {                
                _umbracoValue = editorSource.Text;
            }


        }

        #region IUsercontrolDataEditor Members

        private string _umbracoValue;

        object umbraco.editorControls.userControlGrapper.IUsercontrolDataEditor.value
        {
            get
            {
                return _umbracoValue;
            }
            set
            {
                _umbracoValue = value.ToString();
            }
        }

Can someone please point out what I am doing wrong!

Thanks!,

Jeavon