Ajax Modal popup Extender Popup window clear

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C#

ASP.NET

C#4.0

Hi All,

I am using Ajax modal popup extender to capture some details.
In the pop up window I have SAVE button with some textboxes to save the records in to the database.
I want all the controls in Popup window should be cleared after clicking the SAVE button once they are saved in the Database.
This is my aspx page below

<asp:Button ID="Button1" runat="server" Text="Add" />
<asp:Panel ID="pnlpopup" runat="server" BackColor="White" Height="269px" Width="400px" style="display:none">
                        <table width="100%" style="border:Solid 3px #D55500; width:100%; height:100%" cellpadding="0" cellspacing="0">
                        <tr>
                        <td colspan="2" style=" height:10%; color:Green; font-weight:bold; font-size:larger" align="center">Enter Employee details</td>
                        </tr>              
                        <tr>
                        <td align="right">Name : </td>
                        <td><asp:TextBox ID="txt1" runat="server"/>
                        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
                            ControlToValidate="txtName" ErrorMessage="* Please Enter Name">!</asp:RequiredFieldValidator>
                        </td>
                        </tr>
                        <tr>
                        <td align="right">Address : </td>
                        <td><asp:TextBox ID="txt2" runat="server"/></td>
                        </tr>
                        <tr>
                        <td align="right">Salary : </td>
                        <td><asp:TextBox ID="txt3" runat="server"/></td>
                        </tr>
                        <tr>
                        <td align="right">Phone: </td>
                        <td><asp:TextBox ID="txt4" runat="server"/></td>
                        </tr>                           
                        <tr>
                        <td></td>
                        <td><asp:Button ID="btnSave" CommandName="Save" runat="server" Text="Save" 
                                oncommand="btnSave_Command"/>
                            <asp:Button ID="btnCancel" runat="server" Text="Cancel" />
                        </td>
                        </tr>
                        </table>
                    </asp:Panel>

                       <cc1:modalpopupextender ID="ModalPopupExtender1"  runat="server" 
                            TargetControlID="Button1"
                            PopupControlID="pnlpopup" 
                            BackgroundCssClass="modalBackground"                           
                            CancelControlID="btnCancel">
                       </cc1:modalpopupextender>

And in the code behind I written some code to save the records after SAVE button clicked

protected void defSave_Command(object sender, CommandEventArgs e)
        {
            //written some logic to save...
            this.ModalPopupExtender1.Hide();
        }

Here my problem is Modal-popup is not hiding after executing SAVE button and after clicking save button the popup controls to be cleared.

Please help me...

Thanks,
palcordis