Filtering option in rad grid

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C#

ASP.NET

Telerik

Hi all,
I am trying to implement filter option in my RadGrid. But I am unable to do that.
Whenever I am filtering the grid, the data of grid goes off. This grid I binded dynamically.

Here is the code:

<telerik:RadGrid runat="server" ID="rgBooks" AllowPaging="True"
                AllowSorting="True" AutoGenerateColumns="False"
                onpageindexchanged="rgBooks_PageIndexChanged"
                onpagesizechanged="rgBooks_PageSizeChanged" CellSpacing="0"
                GridLines="None" oneditcommand="rgBooks_EditCommand"
                ongroupschanging="rgBooks_GroupsChanging" onsortcommand="rgBooks_SortCommand"
                ShowGroupPanel="True" oncancelcommand="rgBooks_CancelCommand"
                onitemupdated="rgBooks_ItemUpdated"
                onupdatecommand="rgBooks_UpdateCommand"
                ondeletecommand="rgBooks_DeleteCommand" oninsertcommand="rgBooks_InsertCommand"
                onitemcommand="rgBooks_ItemCommand" AllowFilteringByColumn="True"  >

                <ClientSettings AllowDragToGroup="True">
                    <Selecting CellSelectionMode="None"></Selecting>
                </ClientSettings>
                <MasterTableView CommandItemDisplay="Bottom" AllowFilteringByColumn="true">

                    <RowIndicatorColumn Visible="True" FilterControlAltText="Filter RowIndicator column"/>
                    <ExpandCollapseColumn Visible="True" FilterControlAltText="Filter ExpandColumn column"/>
                    <Columns>
                        <telerik:GridTemplateColumn HeaderText="Book ID" DataField="BookID" UniqueName="BookID" CurrentFilterFunction="EqualTo" AutoPostBackOnFilter="true" DataType="System.Int32" >
                            <ItemTemplate>
                                <asp:Label ID="lblBookID" runat="server" Text='<%#Eval("BookID") %>' />
                            </ItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn HeaderText="Title" UniqueName="Title">
                            <ItemTemplate>
                                <asp:Label ID="lblTitle" runat="server" Text='<%#Eval("Title") %>' />
                            </ItemTemplate>
                            <EditItemTemplate>
                                <asp:TextBox ID="txtTitle" runat="server" Text='<%#Eval("Title") %>' />
                                <asp:RequiredFieldValidator ID="rfvTitle" runat="server" ForeColor="Red"
                                    ErrorMessage="Please Enter the Title" ControlToValidate="txtTitle"/>
                            </EditItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn HeaderText="Publisher Name" UniqueName="PublisherName" >
                            <ItemTemplate>
                                <asp:Label ID="lblPublisherName" runat="server" Text='<%#Eval("PublisherName") %>' />
                            </ItemTemplate>
                            <EditItemTemplate>
                                <asp:TextBox ID="txtPublisherName" runat="server" Text='<%#Eval("PublisherName") %>' />
                                <asp:RequiredFieldValidator ID="rfvPublisherName" runat="server" ForeColor="Red"
                                    ErrorMessage="Please Enter the Publisher Name" ControlToValidate="txtPublisherName"/>
                            </EditItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridTemplateColumn HeaderText="Published Date" UniqueName="PublishedDate">
                            <ItemTemplate>
                                <asp:Label ID="lblPublishedDate" runat="server" Text='<%#Eval("PublishedDate") %>' />
                            </ItemTemplate>
                            <EditItemTemplate>
                                 <asp:TextBox ID="txtPublishedDate" runat="server" Text='<%#Eval("PublishedDate") %>'
                                    onKeyPress='Javascript:return false;'/>
                                 <cc1:CalendarExtender ID="cePublishedDate" TargetControlID="txtPublishedDate"
                                    runat="server"/>
                            </EditItemTemplate>
                        </telerik:GridTemplateColumn>
                        <telerik:GridEditCommandColumn UniqueName="EditCommandColumn"
                            HeaderText="Edit" ButtonType="ImageButton"/>
                        <telerik:GridButtonColumn ConfirmText="Are You Sure Want To Delete?" ConfirmDialogType="Classic"
                            ConfirmTitle="Delete" ButtonType="ImageButton" CommandName="Delete" Text="Delete"
                            UniqueName="DeleteRow" HeaderText="Delete" CommandArgument="BookID">
                            <ItemStyle HorizontalAlign="Center" />
                        </telerik:GridButtonColumn>
                    </Columns>
                    <CommandItemSettings AddNewRecordText="Add New" ShowRefreshButton="true" RefreshText="Refresh" />
                        <CommandItemStyle Height="30px" />
                    <EditFormSettings>
                        <EditColumn UniqueName="EditCommand" />
                    </EditFormSettings>
                </MasterTableView>
                <FilterMenu EnableImageSprites="False"></FilterMenu>
            </telerik:RadGrid>

Please help me out of this problem.
Thanx in advance..