Applying FilteredTextBoxExtender to a Textbox Control in a Nested Gridview's Footer Row

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C#

ASP.NET

Gridview

Ajax-toolkit

Hello Everybody

Wishing you all a Happy n Prosperous New Year ..!

I have been trying to apply filtered textbox extender on a textbox control in nested Gridview's Footer Row since last 3 days but couldn't succeed.

The issue is that even after applying the FilterTextBoxExtender to the txtOutwardID textbox, it is not functioning as expected. I just want to allow numbers and "/-" characters in the textbox but it is allowing all the characters.

One more thing would like to mention that when I am applying the filter to the normal textbox in the form or in the main Gridview then it is working, but not in the child grid's footer row.

Please guide me where am I wrong.



here is my code

Thanks in Advance
Dinesh

<asp:GridView ID="grdViewCustomers" runat="server" AutoGenerateColumns="false" DataKeyNames="PackerID" OnRowDataBound="grdViewCustomers_OnRowDataBound" CssClass="Grid">
   <Columns>
	<asp:TemplateField ItemStyle-Width="20px">
            <ItemTemplate>
		<a href="java<!-- no -->script:divexpandcollapse('div<%# Eval("PackerID") %>');">
		<img alt="Details" id="imgdiv<%# Eval("PackerID") %>" src="images/plus.png" />  </a>
		<div id="div<%# Eval("PackerID") %>" style="display: none;">
                   <asp:GridView ID="grdViewOrdersOfCustomer" runat="server"            AutoGenerateColumns="false" CssClass="ChildGrid" ShowFooter="true" OnRowCommand="grdViewOrdersOfCustomers_OnRowCommand">
			<Columns>
                            <asp:TemplateField HeaderText="OutwardID">
                                <ItemTemplate> 
                                    <asp:Label id="OutwardID" runat="server" Text='<%#Bind("OutwardID") %>'>
                                    </asp:Label>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="txtOutwardID" runat="server" ></asp:TextBox>
                                    <act:FilteredTextBoxExtender  runat="server" ID="FteOutwardID" TargetControlID="txtOutwardID" FilterType="Custom" ValidChars="0123456789-/"></act:FilteredTextBoxExtender>
                                </FooterTemplate>
                            </asp:TemplateField>

                            <asp:TemplateField HeaderText="Date">
                                <ItemTemplate>
                                    <asp:Label id="Date" runat="server" Text='<%#Bind("Date") %>'>
                                    </asp:Label>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox runat="server" ID="txtDate" onfocus="setdate(this);" ></asp:TextBox>
                                </FooterTemplate>
                            </asp:TemplateField>

                            <asp:TemplateField HeaderText="Product">
                                <ItemTemplate>
                                    <asp:Label id="ProductID" runat="server" Text='<%#Bind("ProductID") %>'>
                                    </asp:Label>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:TextBox ID="txtProductID" runat="server" ></asp:TextBox>
                                </FooterTemplate>
                            </asp:TemplateField>

                            <asp:TemplateField HeaderText="" >
                                <ItemTemplate>
                                </ItemTemplate>
                                <FooterTemplate>
                                    <asp:Button id="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
                                </FooterTemplate>
                            </asp:TemplateField>

                        </Columns>
	  	    </asp:GridView>
		</div>
	    </ItemTemplate>
	</asp:TemplateField>
	<asp:BoundField ItemStyle-Width="150px" DataField="Description" HeaderText="Contact Name" />
	<asp:BoundField ItemStyle-Width="150px" DataField="Location" HeaderText="City" />
     </Columns>
</asp:GridView>