I'm using one WebHierarchicalDataGrid on my page. When page is postback around 5-6 times, I am getting below mentioned error:

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[IndexOutOfRangeException: Index was outside the bounds of the array.] Infragistics.Web.UI.GridControls.GridBot.LoadClientCollections(Object[] collections) +2165 Infragistics.Web.UI.Framework.RunBot.LoadClientData() +43 Infragistics.Web.UI.Framework.RunBot.HandleLoadPostData(String postDataKey, NameValueCollection postCollection) +25 Infragistics.Web.UI.GridControls.ContainerGrid.LoadPostData(String postDataKey, NameValueCollection postCollection) +80 System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +1068 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3406

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I'm wondering if this error occurs because my WebHierarchicalDataGrid is too big, or are there any possibilities to cause this problem?

Below is the code defination:

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<igtbl:WebHierarchicalDataGrid ID="DEPA" runat="server" AutoGenerateColumns="false" AutoGenerateBands="false" DataKeyFields="ID"
                EnableDataViewState="true" InitialDataBindDepth="-1" Width="99%" EnableAjax="false" Key="PARTICIPANTS">
                <ClientEvents Initialize="DEPA_Initialize" />
                <Columns>
                    <igtbl:BoundDataField Key="ID" DataFieldName="ID" Hidden="true"></igtbl:BoundDataField>
                    <igtbl:BoundDataField Key="TYPEDESC" DataFieldName="TYPEDESC" Width="70%"></igtbl:BoundDataField>
                    <igtbl:TemplateDataField Key="ADDSTD">
                        <ItemTemplate>
                            <asp:LinkButton ID="lnkAddStudent" runat="server" Text="Add" CssClass="HyperLink_Text" Width="10%"></asp:LinkButton>
                        </ItemTemplate>
                    </igtbl:TemplateDataField>
                    <igtbl:TemplateDataField Key="ADDSTFF">
                        <ItemTemplate>
                            <asp:LinkButton ID="lnkAddStaff" runat="server" Text="Add&nbsp;Staff" CssClass="HyperLink_Text" Width="10%"></asp:LinkButton>
                        </ItemTemplate>
                    </igtbl:TemplateDataField>
                    <igtbl:TemplateDataField Key="ADDVSTR">
                        <ItemTemplate>
                            <asp:LinkButton ID="lnkAddVisitor" runat="server" Text="Add&nbsp;Visitor" CssClass="HyperLink_Text" Width="10%"></asp:LinkButton>
                        </ItemTemplate>
                    </igtbl:TemplateDataField>
                </Columns>
                <Bands>
                    <igtbl:Band Key="OFFENDERS" AutoGenerateColumns="false" DataKeyFields="ID,IncidentId,StudentId">
                        <Columns>
                            <igtbl:TemplateDataField Key="View" Width="20px">
                                <ItemTemplate>
                                    <asp:ImageButton ID="btnView" runat="server" CommandArgument="OFFENDERS" OnCommand="btnView_Command" ImageUrl="~/Images/Icons/Zoom16.gif" />
                                </ItemTemplate>
                            </igtbl:TemplateDataField>
                            <igtbl:TemplateDataField Key="Edit" Width="20px">
                                <ItemTemplate>
                                    <asp:ImageButton ID="btnEdit" runat="server" CommandArgument="OFFENDERS" OnCommand="btnEdit_Command" ImageUrl="~/Images/Icons/Edit16.gif" />
                                </ItemTemplate>
                            </igtbl:TemplateDataField>
                            <igtbl:BoundDataField Key="STUDENTNAME" DataFieldName="STUDENTNAME" Width="90%"></igtbl:BoundDataField>
                            <igtbl:BoundDataField Key="GRADE" DataFieldName="GRADE" Width="10%"></igtbl:BoundDataField>
                            <igtbl:TemplateDataField Key="Delete" Width="20px">
                                <ItemTemplate>
                                    <asp:ImageButton ID="btnDelete" runat="server" CommandArgument="OFFENDERS" OnCommand="btnDelete_Command" ImageUrl="~/Images/Icons/Delete16.gif" ToolTip="Delete" OnClientClick="return confirm('Are you sure you want to delete this record?');" />
                                </ItemTemplate>
                            </igtbl:TemplateDataField>
                        </Columns>
                    </igtbl:Band>
                    <igtbl:Band Key="VICTIMS" AutoGenerateColumns="false" DataKeyFields="lngId,lngStudentId,lngFacultyStaffId">
                        <Columns>
                            <igtbl:TemplateDataField Key="View" Width="20px" />
                            <igtbl:TemplateDataField Key="Edit" Width="20px" />
                            <igtbl:BoundDataField Key="STRNAME" DataFieldName="STRNAME" Width="90%"></igtbl:BoundDataField>
                            <igtbl:BoundDataField Key="STRGRADE" DataFieldName="STRGRADE" Width="10%"></igtbl:BoundDataField>
                            <igtbl:TemplateDataField Key="Delete" Width="20px">
                                <ItemTemplate>
                                    <asp:ImageButton ID="btnDelete" runat="server" CommandArgument="VICTIMS" OnCommand="btnDelete_Command" ImageUrl="~/Images/Icons/Delete16.gif" ToolTip="Delete" OnClientClick="return confirm('Are you sure you want to delete this record?');" />
                                </ItemTemplate>
                            </igtbl:TemplateDataField>
                        </Columns>
                        <Bands>
                            <igtbl:Band Key="VICTIMSCMMT" AutoGenerateColumns="false" DataKeyFields="lngId,lngStudentId,lngFacultyStaffId">
                                <Columns>
                                    <igtbl:BoundDataField Key="STRCOMMENT" DataFieldName="STRCOMMENT" Header-Text="Comment" Width="100%"></igtbl:BoundDataField>
                                </Columns>
                                <Behaviors>
                                    <igtbl:EditingCore BatchUpdating="true">
                                        <Behaviors>
                                            <igtbl:CellEditing>
                                                <EditModeActions EnableOnActive="true" MouseClick="Single" />
                                                <ColumnSettings>
                                                    <igtbl:EditingColumnSetting ColumnKey="STRCOMMENT" ReadOnly="true" />
                                                </ColumnSettings>
                                            </igtbl:CellEditing>
                                        </Behaviors>
                                    </igtbl:EditingCore>
                                </Behaviors>
                            </igtbl:Band>
                        </Bands>
                        <Behaviors>
                            <igtbl:EditingCore BatchUpdating="true">
                                <Behaviors>
                                    <igtbl:CellEditing>
                                        <EditModeActions EnableOnActive="true" MouseClick="Single" />
                                        <ColumnSettings>
                                            <igtbl:EditingColumnSetting ColumnKey="STRNAME" ReadOnly="true" />
                                            <igtbl:EditingColumnSetting ColumnKey="STRGRADE" ReadOnly="true" />
                                        </ColumnSettings>
                                        <CellEditingClientEvents EnteringEditMode="Grid_EnteringEditMode" />
                                    </igtbl:CellEditing>
                                </Behaviors>
                            </igtbl:EditingCore>
                        </Behaviors>
                    </igtbl:Band>
                    <igtbl:Band Key="WITNESSES" AutoGenerateColumns="false" DataKeyFields="lngId,lngStudentId,lngFacultyStaffId">
                        <Columns>
                            <igtbl:TemplateDataField Key="View" Width="20px" />
                            <igtbl:TemplateDataField Key="Edit" Width="20px" />
                            <igtbl:BoundDataField Key="STRNAME" DataFieldName="STRNAME" Width="90%"></igtbl:BoundDataField>
                            <igtbl:BoundDataField Key="STRGRADE" DataFieldName="STRGRADE" Width="10%"></igtbl:BoundDataField>
                            <igtbl:TemplateDataField Key="Delete" Width="20px">
                                <ItemTemplate>
                                    <asp:ImageButton ID="btnDelete" runat="server" CommandArgument="WITNESSES" OnCommand="btnDelete_Command" ImageUrl="~/Images/Icons/Delete16.gif" ToolTip="Delete" OnClientClick="return confirm('Are you sure you want to delete this record?');" />
                                </ItemTemplate>
                            </igtbl:TemplateDataField>
                        </Columns>
                        <Bands>
                            <igtbl:Band Key="WITNESSESCMMT" AutoGenerateColumns="false" DataKeyFields="lngId,lngStudentId,lngFacultyStaffId">
                                <Columns>
                                    <igtbl:BoundDataField Key="STRCOMMENT" DataFieldName="STRCOMMENT" Header-Text="Comment" Width="100%"></igtbl:BoundDataField>
                                </Columns>
                                <Behaviors>
                                    <igtbl:EditingCore BatchUpdating="true">
                                        <Behaviors>
                                            <igtbl:CellEditing>
                                                <EditModeActions EnableOnActive="true" MouseClick="Single" />
                                                <ColumnSettings>
                                                    <igtbl:EditingColumnSetting ColumnKey="STRCOMMENT" ReadOnly="true" />
                                                </ColumnSettings>
                                            </igtbl:CellEditing>
                                        </Behaviors>
                                    </igtbl:EditingCore>
                                </Behaviors>
                            </igtbl:Band>
                        </Bands>
                        <Behaviors>
                            <igtbl:EditingCore BatchUpdating="true">
                                <Behaviors>
                                    <igtbl:CellEditing>
                                        <EditModeActions EnableOnActive="true" MouseClick="Single" />
                                        <ColumnSettings>
                                            <igtbl:EditingColumnSetting ColumnKey="STRNAME" ReadOnly="true" />
                                            <igtbl:EditingColumnSetting ColumnKey="STRGRADE" ReadOnly="true" />
                                        </ColumnSettings>
                                        <CellEditingClientEvents EnteringEditMode="Grid_EnteringEditMode" />
                                    </igtbl:CellEditing>
                                </Behaviors>
                            </igtbl:EditingCore>
                        </Behaviors>
                    </igtbl:Band>
                </Bands>
                <Behaviors>
                    <igtbl:Activation />
                </Behaviors>
            </igtbl:WebHierarchicalDataGrid>

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On Code behind:

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                Me.DEPA.Rows.Clear()
                Me.DEPA.DataSource = dsDataSet
                Me.DEPA.GridView.DataMember = "DisciplineEventParticipants"
                Me.DEPA.Bands.Item(0).DataMember = "DisciplineEventPrepetrators"
                Me.DEPA.Bands.Item(1).DataMember = "DisciplineEventVictimWitness"
                Me.DEPA.Bands.Item(2).DataMember = "DisciplineEventVictimWitness"
                Me.DEPA.Bands.Item(1).Bands.Item(0).DataMember = "DisciplineEventVictimWitness"
                Me.DEPA.Bands.Item(2).Bands.Item(0).DataMember = "DisciplineEventVictimWitness"
                Me.DEPA.DataBind()

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Additional Info:

• Using VS2013
• Do not want to ajaxify page.
• Created three bands static on same level.

Quick reply will be appreciated..!!

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Greetings

Abhishek