Hi,

I'm binding programatically the WHDG to List<TestObj> from code behind. I have a button Delete that has server event handler which deletes a row from the list and tries to rebind the grid. The problem is that when the page is show again, the grid contains the deleted row and the last row disappears. I have a button that simply do a postback and then everything seems to be OK after the rebind in Page_Load. How can I rebind the grid in the Delete event handler to show the correct data?  I want the grid with ViewStateMode=Disabled and I don't want to use declarative DataSource controls. Here is the sample code:

    <asp:Button ID="Button1" runat="server" Text="Button" />
    <ig:WebHierarchicalDataGrid ID="whdg" runat="server" Height="400px"
        Width="700px" HeightAutoGenerateBands="False" AutoGenerateColumns="False" Key="LLL"
        AutoGenerateBands="False" DataKeyFields="Pk" InitialDataBindDepth="-1" InitialExpandDepth="2"
        EnableAjax="False" ViewStateMode="Disabled">
        <Bands>
        </Bands>
        <Columns>
            <ig:TemplateDataField Key="Delete" VisibleIndex="0" Width="16">
                <ItemTemplate>
                    <asp:ImageButton ID="btnDelete" runat="server" CommandArgument='<%# Eval("Pk") %>'
                        OnCommand="btnDelete_Command" AlternateText="Delete" ImageUrl="~/delete.gif"
                        CausesValidation="False" />
                </ItemTemplate>
            </ig:TemplateDataField>
            <ig:TemplateDataField Key="Name" VisibleIndex="1">
                <ItemTemplate>
                    <asp:Literal ID="Literal1" runat="server" Text='<%# DataBinder.Eval(((Infragistics.Web.UI.TemplateContainer)Container).DataItem, "Name") %>'></asp:Literal>
                </ItemTemplate>
                <Header Text="name" />
            </ig:TemplateDataField>
        </Columns>
        <Behaviors>
            <ig:Selection CellClickAction="Row" RowSelectType="Single">
            </ig:Selection>
        </Behaviors>
    </ig:WebHierarchicalDataGrid>

        public class TestObj
        {
            private string _pk;
            private string _name;
 
            public string Pk
            {
                get { return _pk; }
                set { _pk = value; }
            }
 
            public string Name
            {
                get { return _name; }
                set { _name = value; }
            }
        }
 
        public List<TestObj> L
        {
            get { return (List<TestObj>)Session["TestObj"]; }
            set { Session["TestObj"] = value; }
        }
 
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
                L = new List<TestObj>() 
                { 
                    new TestObj() { Name = "Name1", Pk = "1" }, 
                    new TestObj() { Name = "Name2", Pk = "2" }, 
                    new TestObj() { Name = "Name3", Pk = "3" }, 
                    new TestObj() { Name = "Name4", Pk = "4" } 
                };
            BindGrid();
        }
 
        private void BindGrid()
        {
            Infragistics.Web.UI.DataSourceControls.WebHierarchicalDataSource whds = new Infragistics.Web.UI.DataSourceControls.WebHierarchicalDataSource();
            Infragistics.Web.UI.DataSourceControls.DataView view = new Infragistics.Web.UI.DataSourceControls.DataView();
            view.DataSource = L;
            view.ID = "L";
            whds.DataViews.Add(view);
            whdg.DataSource = whds;
            whdg.DataBind();
        }
 
        public void btnDelete_Command(object sender, CommandEventArgs e)
        {
            L.RemoveAll(p => p.Pk == e.CommandArgument.ToString());
            BindGrid();
 
        }