Restricting the values inside textbox to only numbers but that text box is within grid view

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hi.... i am using a grid view and inside the grid view a text box... but that text box should restrict user from entering special characters or alphabets.. it should accept only and only numbers ranging between say 1 to 100 it can also be like 2.5 or 20.5 ... so what is the best way to validate the text box... inside the grid view is it better to use a validator like regular expression or is there any other way... as in grid view there will be many rows.. so whats the best way to validate the text box within grid view please help or guide me...

Thanking you in advance.

Posted 29-Jan-13 2:35am

Shruthi.BT

Updated 29-Jan-13 2:37am

v2

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2013-01-29T02:48:00

Solution 2

Please follow the solution in How to validate textbox inside gridview to accept numeric values only[^].

HTML:

XML

<asp:TextBox ID="txtUID" runat="server" CssClass="TextBox" onkeypress="return onlyNumbers(this);"/>

JAVASCRIPT:
//Restrict the user to key-in chrectors and other special charectors

JavaScript

function onlyNumbers(evt) {
    var e = event || evt; // for trans-browser compatibility
    var charCode = e.which || e.keyCode;
    if (charCode > 31 && (charCode < 48 || charCode > 57))
        return false;
    return true;
}

And also use RequiredFieldValidator if the field is required to key-in by user.

You can add your logic for restricting the number ranges in function onlyNumbers(evt).

Thanks,
Tadit.

Posted 29-Jan-13 2:48am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

[no name] 29-Jan-13 8:54am

+5

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 30-Jan-13 1:54am

Thanks @Sisir.

[no name] 30-Jan-13 2:16am

yw

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 30-Jan-13 5:45am

Hi @Shruthi.BT,

Please accept this answer, if it has helped you in any way.
This will help others to find the answer in one go and you will also be awarded with some points for this action...

Thanks,
Tadit

Member 12370938 5-Mar-16 1:52am

thanks ...for above code

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 6-Mar-16 6:14am

Most welcome buddy :)

Ksh_Sr · Accepted Answer · 2013-01-29T03:00:00

Solution 3

Declare textbox within ur grid view like this

C#

<itemtemplate>
<asp:textbox id="txtUID" runat="server" cssclass="TextBox" onkeypress="return isNumberKey(event);" xmlns:asp="#unknown" />
</itemtemplate>

and in head section of the page add script

C#

<script type="text/javascript">

function isNumberKey(evt) {
    
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57))
                return false;
    return true;
}

</script>

hope this helps u

enjoy :)

Posted 29-Jan-13 3:00am

Ksh_Sr

Updated 29-Jan-13 20:17pm

v2

Comments

Shruthi.BT 29-Jan-13 9:19am

hi... kshitij_CodeMaster this worked... but it is allowing any number means like 147852369 or anything in numbers... is there any way i can restrict number to like from 1- 10 as this textbox is for rating score.. so it should be within specific range... thanks...

[no name] 30-Jan-13 2:25am

for this task ..u cn use dropdownlist for rating bcs ur values are fixed from 1 -10.
it will be easily understandable to u.

Shruthi.BT 30-Jan-13 8:11am

but... i need a text box.. means it is not 1-10 only that for ex i told.. but it should not take numbers like 123456789 also.. can we restrict that.. ?

[no name] 30-Jan-13 8:16am

<asp:textbox id="txtUID" runat="server" cssclass="TextBox" onkeypress="return isNumberKey(event);" MaxLength=2/>

set MaxLength field to no of digits u want to restrict in textbox

fjdiewornncalwe 30-Jan-13 10:03am

Plagiarism: Source