If the grid is losing the design-time layout, it's because something is not matching up. Either the column names or the key of the band must be different at run-time from what you assigned at run-time.

Either that or you are setting the DataSource/DataMember properties instead of calling SetDataBinding.

Interesting,  I defined a custom set of columns with the option that I would provide a dataset at runtime.  

The data source is a set of custom business objects, each containing a collection of other custom business objects. The actual data source is two levels deep from the controls top most BindingSource:

Customers -> Orders -> OrderLines (or in my case Scores)

So there is a BindingSource for Customers, one for Orders, and one for OrderLines.  At runtime I am assigning the "OrderLines" BindingSource to the UltraGrid and at run time I am still getting ALL the columns.

Mind you, elsewhere in this application I am simply binding an UltraGrid to a DataSet, going in to the UltraGrid Designer and hiding the columns I want hidden and it works. Very strange it doesn't work here.

Sam

No luck there :(  But I am a BIG fan of writing code via GUI's rather then editors.  I did use a test program that is using the custom ITypedList interface and that is hiding the columns correctly.  Here is all the code I have written for the control:

    public sealed partial class QuestionBoxDetailControl : UserControl, IDetailPanel

    {

        public static UserControl Create(TmplBldrDoc tmplBldrDoc)

        {

            QuestionBoxDetailControl control = new QuestionBoxDetailControl();

            control._tmplBldrDoc = tmplBldrDoc;

            control.aTQuestionBoxBindingSrc.DataSource = tmplBldrDoc.DetailItem;

            return control;

        }

        private TmplBldrDoc _tmplBldrDoc;

        public QuestionBoxDetailControl()

        {

            InitializeComponent();

        }

        public void Initialize(TmplBldrDoc tmplBldrDoc)

        {

            _tmplBldrDoc = tmplBldrDoc;            

        }

        #region IDetailPanel Members

        public string Title

        {

            get { return "Question Detail"; }

        }

        void IDetailPanel.UpdateData(TmplBldrDoc tmplBldrDoc, IDetailPanel newPanel)

        {

            Debug.Assert(newPanel.GetType().Equals(this.GetType()));

            _tmplBldrDoc = tmplBldrDoc;

        }

        #endregion     

    }