So that works great on a button click.  I tried to move it into Page_Load event. I am trying to set the page if it is a postback

           if (!IsPostBack)

            {                

                this.RequestGrid.DataBind();

                 WebHierarchicalDataGrid1.GridView.Behaviors.Paging.PageIndex = 2;

            }

On my demo grid this worked great.

On my real grid I got an error, I turned off tracing and it worked.  Seems a little odd.

Multiple controls with the same ID 'grdOffRequests:_ctl0:it1_0' were found. Trace requires that controls have unique IDs.

[HttpException (0x80004005): Multiple controls with the same ID 'grdOffRequests:_ctl0:it1_0' were found. Trace requires that controls have unique IDs.]
   System.Web.TraceContext.AddNewControl(String id, String parentId, String type, Int32 viewStateSize, Int32 controlStateSize) +525
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +287
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +353
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +353
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +353
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +353
   System.Web.UI.Control.BuildProfileTree(String parentId, Boolean calcViewState) +353
   System.Web.UI.Page.BuildPageProfileTree(Boolean enableViewState) +39
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6585

Hello mland,

try with this:

    protected void Button1_Click1(object sender, EventArgs e)
    {
        WebHierarchicalDataGrid1.GridView.Behaviors.Paging.PageIndex = 2;
    }

Any thoughts on the code I posted

So here is my test project.  On the button I have:

WebHierarchicalDataGrid1.Behaviors.Paging.PageIndex = 2;

I would have thought this would work but...         Any suggestions?

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Infragistics.Web.UI.GridControls;

using TotalCare.Enterprise.Common.ZeroClient;

namespace TotalCare.Enterprise.ZeroClient.RequestFacility.secure.Manager.Request

{

    public class Parent

    {

        public Parent()

        {

            Description_l = string.Empty;

            Id_l = 0;

        }

        public Parent(int id, string desc)

        {

            Description_l = desc;

            Id_l = id;

        }

        private string Description_l;

        public string Description

        {

            get { return Description_l; }

            set { Description_l = value; }

        }

        private int Id_l;

        public int ID

        {

            get { return Id_l; }

            set { Id_l = value; }

        }

    }

    public partial class _TestForm : TotalCare.Enterprise.ZeroClient.RequestFacility.common.tctBaseForm

    {

        protected override void OnInit(EventArgs e)

        {

            if (DesignMode)

                return;

            base.OnInit(e);

            if (Session["Test"] == null)

            {

                Session["Test"] = CreateData();                 

            }

            WebHierarchicalDataGrid1.DataSource = Session["Test"];

        }

        protected void Page_Load(object sender, EventArgs e)

        {

            if (Page.IsPostBack == false)

            {               

                WebHierarchicalDataGrid1.DataBind();

            }    

        }

        public List<Parent> CreateData()

        {

            List<Parent> xx = new List<Parent>();

            for (int x = 0;

                      x < 90;

                      x++)

            {                

                Parent curParent = new Parent(x, "Desc" + Convert.ToString(x));

                xx.Add(curParent);

            }

            return xx;

        }

        protected void Button1_Click1(object sender, EventArgs e)

        {

            WebHierarchicalDataGrid1.Behaviors.Paging.PageIndex = 2;

        }

    }

}

<body>

    <form id="theForm" runat="server">

    <asp:ScriptManager ID="ScriptManager2" EnablePartialRendering="true" runat="server">

    </asp:ScriptManager>

    <asp:Button ID="Button1" runat="server" OnClick="Button1_Click1" Text="Button" />

    <ig:WebHierarchicalDataGrid ID="WebHierarchicalDataGrid1" runat="server" AutoGenerateBands="false"

        AutoGenerateColumns="False" DataKeyFields="ID" Width="300px" Height="350px" InitialDataBindDepth="0"

        InitialExpandDepth="0">

        <Columns>

            <ig:BoundDataField DataFieldName="ID" Width="120px" Key="ID">

                <Header Text="id_parent" />

                <Header Text="id_parent" />

            </ig:BoundDataField>

            <ig:BoundDataField DataFieldName="Description" Width="120px" Key="Description">

                <Header Text="desc_parent" />

                <Header Text="desc_parent" />

            </ig:BoundDataField>

        </Columns>

        <Behaviors>

            <ig:Paging PagerAppearance="Bottom" QuickPages="5" PageSize="15" Enabled="true">

            </ig:Paging>

        </Behaviors>

    </ig:WebHierarchicalDataGrid>

    </form>

</body>

Hello mland,

you should be able to change page index on a button click. What is your datasource?