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hi ...
thanks a lot..i got how to edi,update,n i want to validate the textbox wen i press i want to ckeck for null vlues entry...only numbers.......i am searching for javascript but no proper result...

any links ..pls post....

Hi divyasrinivasan,

This is for validating textbox for numeric only :

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="OperationSheetMultipleArticle.aspx.vb" Inherits="OperationSheetMultipleArticle" EnableSessionState="true" %>
<%@ OutputCache Location="Client" duration="5" varybyparam="none" %>
<html xmlns="" >
<script type="text/javascript" language=javascript>
function keyDownNumber()
    var key;    
    if(navigator.appName == 'Microsoft Internet Explorer')
        key = event.keyCode;
        key = event.which
    if ( !(key >= 48 && key <= 57) && key != 8 && key != 46 && key != 36 && key != 37)
        event.returnValue = false;        
<head runat="server">
    <title>Operation Sheet</title> 
<body leftmargin=5 topmargin=3> 
    <form id="form1" runat="server">
 <asp:GridView ID="GVDetail" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" BackColor="LightGray"
          BorderColor="White" BorderStyle="Ridge" BorderWidth="1px" CaptionAlign="Top" CellPadding="0" Font-Size="12px" Font-Strikeout="False" Font-Underline="False" Height="1px" HorizontalAlign="Left" Style="left: 4px; top: 127px" UpdateAfterCallBack="True" Width="100%"  EmptyDataText="NO RECORD FOUND" PageSize="12">
                    <FooterStyle BackColor="#C6C3C6" ForeColor="Black" />
                    <PagerStyle BackColor="#C6C3C6" ForeColor="Black" HorizontalAlign="Right" />
                    <HeaderStyle BackColor="#4A3C8C" Font-Bold="True" Font-Italic="False" Font-Underline="False"
                        ForeColor="#E7E7FF" />
                    <SelectedRowStyle BackColor="#9471DE" Font-Bold="True" ForeColor="White" />
                     <asp:templatefield headertext="Del."  >
                            <itemstyle borderstyle="None" font-size="8pt" width="10px" horizontalalign="Center" />
                            <headerstyle font-bold="False" width="10px" font-size="8pt"/>
                                <asp:CheckBox id="ChkDelete" runat="server" width="20px"  ></asp:CheckBox>                                                                   
                         <asp:templatefield headertext="Article No.">
                            <itemstyle borderstyle="None" font-size="8pt" width="20px" />
                            <headerstyle font-bold="False" width="65px" font-size="8pt"/>
                                <asp:TextBox id="TxtArticleNo" readonly=true text='<% # eval("ArticleNo") %>' runat="server" width="65px" borderstyle="None" font-size="8pt" BackColor="LightCyan" autocallback=true></asp:TextBox>                                                                                                              
                        <asp:templatefield headertext="Amount">
                            <itemstyle borderstyle="None" font-size="8pt" width="20px" />
                            <headerstyle font-bold="False" width="65px" font-size="8pt"/>
                                <asp:TextBox id="Amount" text='<% # eval("Amount") %>' runat="server" width="65px" borderstyle="None" font-size="8pt" onkeypress="keyDownNumber()"  BackColor="Beige"></asp:TextBox>                                                                                 
                    <RowStyle BackColor="#DEDFDE" ForeColor="Black" />
             <AlternatingRowStyle BackColor="LightGray" />


Hi there... still new so please forgive me if I make a mistake... to add validation to a textbox that is inside a gridview...
1. Convert the field into a text field...
2. then add validation into the <EditItemTemplate></EditItemTemplate> and the <InsertItemTemplate></InsertItemTemplate>

as below... :

<asp:TemplateField HeaderText="Client Number" SortExpression="ClientNumber">
                <asp:TextBox ID="txtClientNumber" runat="server" Text='<%# Bind("ClientNumber") %>'></asp:TextBox>
                <asp:TextBox ID="txtClientNumber" runat="server" Text='<%# Bind("ClientNumber") %>'></asp:TextBox>
                <asp:RequiredFieldValidator ID="val1" runat="server"  ControlToValidate="txtClientNumber" ErrorMessage="Client Number Required" Display="Dynamic"></asp:RequiredFieldValidator>                    
                <asp:Label ID="Label1" runat="server" Text='<%# Bind("ClientNumber") %>'></asp:Label>
            <ControlStyle CssClass="editControlTextFields" Width="96%" />
            <HeaderStyle Width="110px" />

you can also use in built validation controls provided by .net framework instead of java script.

USE as argument in Validate function.
like I have my javascript function validateData(source) and I called it as follows on update link OnClientClick="return validateData(;"

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