Edit Item template retains its control

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C#

C#4.0

Hi all,

I have some critical problem with edit item template of gridview.

My aspx code for the girdview is like

<asp:TemplateField HeaderText="T1" ItemStyle-Width="50px" ItemStyle-HorizontalAlign="Center">
                    <ItemTemplate>
                        <%-- <asp:Label ID="lblMonth1" Text='<%#Eval("Percentage1") %>' runat="server"></asp:Label>--%>
                        <asp:LinkButton ID="lblMonth1" Text='<%#Eval("Percentage1") %>' runat="server" OnClick="lblMonth_Click"></asp:LinkButton>
                        <asp:HiddenField ID="PeriodID1" runat="server" Value='<%#Eval("PeriodID1") %>' />
                        <asp:Label ID="date1" runat="server" Text='<%#Eval("date1","{0:d}") %>'></asp:Label>
                    </ItemTemplate>
                    <EditItemTemplate>
                        <asp:TextBox Width="70px" EnableCalendar="true" EnableShortDateCalendarString="true"
                            ID="datemonth1" CssClass="setting" runat="server" Text='<%#Eval("date1","{0:d}") %>'></asp:TextBox>
                        <ajaxToolkit:CalendarExtender ID="cal1" BehaviorID="bcal1" Enabled="true" PopupPosition="BottomRight"
                            TargetControlID="datemonth1" Format="dd/MM/yyyy" CssClass="font_strike" runat="server">
                        </ajaxToolkit:CalendarExtender>
                    </EditItemTemplate>
                    <ItemStyle HorizontalAlign="Center" Width="50px"></ItemStyle>
                </asp:TemplateField>                              
                <asp:CommandField ShowDeleteButton="false" ShowEditButton="true" DeleteText="Verwijder"
                    ItemStyle-BorderColor="Black" ItemStyle-ForeColor="Blue" EditText="Bewerk" CancelText="Annuleer"
                    UpdateText="Update"></asp:CommandField>
            </Columns>


I have made 10 cloumns same as the one datemonth1 in the table.
So i have 10 edit item templates in my page and I have set the calender control and all settings in gridview rowdata bound event..

If anyone need the code i can paste it here..

The flow in my page is


1)in the mainscreenpanel it shows a table based on the selection in the dropdowns
2)in the main screen panel i am providing a link button which shows second scrin in which i am showing the above gridview
3)now the problem is on clicking the edit link in the above table it works as i want but when I am not clicking on cancel link or update link,and directly press back button it shows main screen
4)and then again if i am clicking on the link button it shows the tables edititems.

How can i solve it..?
can any one help me..?