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  • Justin Yoo 16 posts 39 karma points
    Feb 07, 2012 @ 02:26
    Justin Yoo

    Custom DataType using UserControl lose value after postback

    Hi, Guys.

    I'm using Umbraco for the website development. While I was developing a custom data type using the UserControl, I found that, after the postback event, the field data disappeared.


    public partial class MemberTypePicker : System.Web.UI.UserControl, umbraco.editorControls.userControlGrapper.IUsercontrolDataEditor
    #region Properties
    public object value { get; set; }
    #region Event Handlers
    protected void Page_Load(object sender, EventArgs e)
    if (this.IsPostBack)
    this.value = this.MemberTypes.Text;
    this.MemberTypes.Text = "Administrator";
    When you guys look at the code above, it is the typical and simple way of creating a custom data type user control. The TextBox control, MemberTypes, is forced to have the "Administrator" value. However, once I click the save button, the MemberTypes.Text lose its value to String.Empty.
    Can anyone let me know what I have missed? I've implemented several custom data type user controls so far, but it's my first time to face this issue.


  • Justin Yoo 16 posts 39 karma points
    Feb 07, 2012 @ 02:37
    Justin Yoo

    When I run the debug mode, I could get the result above, there's nothing!



  • Chris Randle 67 posts 181 karma points c-trib
    Jun 12, 2012 @ 16:28
    Chris Randle


    The way I have handled in the past is to create a class in App_Code that extends from ApplicationBase. Add some events, as follows:



    public Document Document { get; set; }


        public CustomEvents()


            Document.AfterPublish += Document_AfterPublish;

            Document.New += Document_New;



        private void Document_AfterPublish(Document document, umbraco.cms.businesslogic.PublishEventArgs e)


    // check to see if this is the right DocType firing the event, read the property, and persist

     if (document.ContentType.Alias == "MemberTypePicker") documentTitle = document.Text; 




    Essentially, your document has the value when raising the event, and you read it, then save it to Umbraco. Hope this helps.


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