for textbox validation at client side in c# asp.net

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the question is releted to javascript.

I have user-control form and aspx form, if there are 4 textbox in user-controland i want to check blank validation of textbox from aspx form where there is an one button in c# asp.net

onclientclick

plz reply as soon as possible

Posted 24-Jun-13 22:56pm

az2888

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5 solutions

Solution 2

Hi,

It's a bad idea to validate stuff at client-side. If someone disables JavaScript in his browser, then you don't longer validate the text box. So, ALWAYS validate stuff at server-side!

In this case, use a RequiredFieldValidator, which is server-side:
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.requiredfieldvalidator%28v=vs.110%29.aspx[^]
http://asp.net-tutorials.com/validation/required-field-validator/[^]
http://www.devmanuals.com/tutorials/ms/aspdotnet/requiredfieldvalidator.html[^]

Posted 24-Jun-13 23:04pm

Thomas Daniels

Updated 24-Jun-13 23:05pm

v3

Solution 3

hi visit this url...

http://www.devmanuals.com/tutorials/ms/aspdotnet/requiredfieldvalidator.html[^]

Posted 25-Jun-13 0:25am

samadhan_kshirsagar

Solution 4

Here are a couple of articles that might help you in achieving what you want:

Understanding ASP.NET Validation Techniques[^]
A Tiny Javascript Framework for Common Validation Scenarios.[^]

Posted 25-Jun-13 0:29am

Rahul Rajat Singh

Solution 5

He try this

XML

<script type="text/javascript">


    // Client Side Validation On Save
        $(document).ready(function() {
         //   AddFunctionsOnEvents();

        });
        //------------>
        function AddFunctionsOnEvents() {
            $("#<%=cmdSave.ClientID%>").click(function() {
                return ValidateSaveData();
            });


        }
        //------------>
        //------------>
        function ValidateSaveData(){






        var Email = document.getElementById('<%=txtEmailID.ClientID %>').value;
            if (Email == "") {
                alert("Enter Email ID");
                document.getElementById('<%=txtEmailID.ClientID%>').focus();
                return false;
            }
            //var emailPat = /^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}]|[A-Za-z]\w*(\.[A-Za-z]\w*)+)$/
            var emailPat = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;
            var validEmail = emailPat.test(Email);
            //var EmailmatchArray = Email.match(emailPat);
            if (!validEmail) {
                alert("Your email ID seems incorrect. Please try again.");
                document.getElementById('<%=txtEmailID.ClientID%>').focus();
                return false;}

               if (document.getElementById("<%=txtPassword.ClientID %>").value == "") {
                alert("Enter Password");
                document.getElementById('<%=txtPassword.ClientID%>').focus();
                return false;
            }


                if (document.getElementById("<%=txtPassword.ClientID %>").value != document.getElementById("<%=txtConfrmPwd.ClientID %>").value ) {
                alert("Password and Confirm Password Should be Same");
                document.getElementById('<%=txtConfrmPwd.ClientID%>').focus();
                return false;
            }
}
</script>

Posted 29-Jul-13 20:58pm

Anmol j khadbade

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The Doer · Accepted Answer · 2013-06-24T22:59:00

Suppose we create a user control that has only asp:text box named 'txt', and we have to validate it in our page.

XML

<myText:Textbox ID="txt" runat="server" Visible="true"  />
    <asp:Button ID="btnSumbit" runat="server" Text="Validate user control" OnClientClick="javascritp:return IsFilled()" />

You can use the following JavaScript to get that control.

SQL

var a=document.getElementById('form1').elements("txt$txt");
    if(a.value=='')
    {
        alert("please enter value");
        return false;
    }

Regards