How to allow only numbers in textbox in mvc4 razor
asp.net Mvcasp.net Mvc-3asp.net Mvc-4asp.net Mvc Problem Overview
I have 3 text box which takes values postal code & mobile number & residential number. I got the solution for allowing only number in text box using jquery from Bellow post.
but can we do this using data annotations as I am using MVC4 razor ?
asp.net Mvc Solutions
Solution 1 - asp.net Mvc
i was just playing around with HTML5 input type=number. while its not supported by all browsers I expect it is the way going forward to handle type specific handling (number for ex). pretty simple to do with razor (ex is VB)
@Html.TextBoxFor(Function(model) model.Port, New With {.type = "number"})
and thanks to Lee Richardson, the c# way
@Html.TextBoxFor(i => i.Port, new { @type = "number" })
beyond the scope of the question but you could do this same approach for any html5 input type
Solution 2 - asp.net Mvc
Use a regular expression, e.g.
[RegularExpression("([1-9][0-9]*)", ErrorMessage = "Count must be a natural number")]
public int Count { get; set; }
Solution 3 - asp.net Mvc
@Html.TextBoxFor(m => m.PositiveNumber,
new { @type = "number", @class = "span4", @min = "0" })
in MVC 5 with Razor you can add any html input attribute in the anonymous object as per above example to allow only positive numbers into the input field.
Solution 4 - asp.net Mvc
in textbox write this code onkeypress="return isNumberKey(event)"
and function for this is just below.
<script type="text/javascript">
function isNumberKey(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode;
if (charCode != 46 && charCode > 31
&& (charCode < 48 || charCode > 57))
return false;
return true;
}
</script>
Solution 5 - asp.net Mvc
Please use the DataType
attribute. This will accept negative values so the regular expression below will avoid this:
[DataType(DataType.PhoneNumber,ErrorMessage="Not a number")]
[Display(Name = "Oxygen")]
[RegularExpression( @"^\d+$")]
[Required(ErrorMessage="{0} is required")]
[Range(0,30,ErrorMessage="Please use values between 0 to 30")]
public int Oxygen { get; set; }
Solution 6 - asp.net Mvc
This worked for me :
<input type="text" class="numericOnly" placeholder="Search" id="txtSearch">
Javacript:
//Allow users to enter numbers only
$(".numericOnly").bind('keypress', function (e) {
if (e.keyCode == '9' || e.keyCode == '16') {
return;
}
var code;
if (e.keyCode) code = e.keyCode;
else if (e.which) code = e.which;
if (e.which == 46)
return false;
if (code == 8 || code == 46)
return true;
if (code < 48 || code > 57)
return false;
});
//Disable paste
$(".numericOnly").bind("paste", function (e) {
e.preventDefault();
});
$(".numericOnly").bind('mouseenter', function (e) {
var val = $(this).val();
if (val != '0') {
val = val.replace(/[^0-9]+/g, "")
$(this).val(val);
}
});
Solution 7 - asp.net Mvc
Use this function in your script and put a span near textbox to show the error message
$(document).ready(function () {
$(".digit").keypress(function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57)) {
$("#errormsg").html("Digits Only").show().fadeOut("slow");
return false;
}
});
});
@Html.TextBoxFor(x => x.company.ContactNumber, new { @class = "digit" })
<span id="errormsg"></span>
Solution 8 - asp.net Mvc
for decimal values greater than zero, HTML5 works as follows:
<input id="txtMyDecimal" min="0" step="any" type="number">
Solution 9 - asp.net Mvc
can we do this using data annotations as I am using MVC4 razor ?
No, as I understand your question, unobtrusive validation will only show erorrs. The simplest way is use jquery plugin:
Solution 10 - asp.net Mvc
Here is the javascript that will allows you to enter only numbers.
Subscribe to onkeypress
event for textbox.
@Html.TextBoxFor(m=>m.Phone,new { @onkeypress="OnlyNumeric(this);"})
Here is the javascript for it:
<script type="text/javascript">
function OnlyNumeric(e) {
if ((e.which < 48 || e.which > 57)) {
if (e.which == 8 || e.which == 46 || e.which == 0) {
return true;
}
else {
return false;
}
}
}
</script>
Hope it helps you.
Solution 11 - asp.net Mvc
Maybe you can use the [Integer] data annotation (If you use the DataAnnotationsExtensions http://dataannotationsextensions.org/) . However, this wil only check if the value is an integer, nót if it is filled in (So you may also need the [Required] attribute).
If you enable Unobtrusive Validation it will validate it clientside, but you should also use Modelstate.Valid in your POST action to decline it in case people have Javascript disabled.
Solution 12 - asp.net Mvc
DataType
has a second constructor that takes a string. However, internally, this is actually the same as using the UIHint
attribute.
Adding a new core DataType is not possible since the DataType
enumeration is part of the .NET framework. The closest thing you can do is to create a new class that inherits from the DataTypeAttribute
. Then you can add a new constructor with your own DataType
enumeration.
public NewDataTypeAttribute(DataType dataType) : base(dataType)
{ }
public NewDataTypeAttribute(NewDataType newDataType) : base (newDataType.ToString();
You can also go through this link. But I will recommend you using Jquery for the same.
Solution 13 - asp.net Mvc
Hi try the following....
<div class="editor-field">
<%: Html.TextBoxFor(m => m.UserName, new {onkeydown="return ValidateNumber(event);" })%>
<%: Html.ValidationMessageFor(m => m.UserName) %>
</div>
SCRIPT
<script type="text/javascript">
function ValidateNumber(e) {
var evt = (e) ? e : window.event;
var charCode = (evt.keyCode) ? evt.keyCode : evt.which;
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
return false;
}
return true;
};
Solution 14 - asp.net Mvc
@Html.TextBoxFor(x => x.MobileNo, new { @class = "digit" , @maxlength = "10"})
@section Scripts
{
@Scripts.Render("~/bundles/jqueryui")
@Styles.Render("~/Content/cssjqryUi")
<script type="text/javascript">
$(".digit").keypress(function (e) {
if (e.which != 8 && e.which != 0 && (e.which < 48 || e.which > 57))
{
$("#errormsg").html("Digits Only").show().fadeOut("slow");
return false;
}
});
</script>
}
Solution 15 - asp.net Mvc
Use the type="number"
Solution 16 - asp.net Mvc
function NumValidate(e) {
var evt = (e) ? e : window.event;
var charCode = (evt.keyCode) ? evt.keyCode : evt.which;
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
alert('Only Number ');
return false;
} return true;
} function NumValidateWithDecimal(e) {
var evt = (e) ? e : window.event;
var charCode = (evt.keyCode) ? evt.keyCode : evt.which;
if (!(charCode == 8 || charCode == 46 || charCode == 110 || charCode == 13 || charCode == 9) && (charCode < 48 || charCode > 57)) {
alert('Only Number With desimal e.g.: 0.0');
return false;
}
else {
return true;
} } function onlyAlphabets(e) {
try {
if (window.event) {
var charCode = window.event.keyCode;
}
else if (e) {
var charCode = e.which;
}
else { return true; }
if ((charCode > 64 && charCode < 91) || (charCode > 96 && charCode < 123) || (charCode == 46) || (charCode == 32))
return true;
else
alert("Only text And White Space And . Allow");
return false;
}
catch (err) {
alert(err.Description);
}} function checkAlphaNumeric(e) {
if (window.event) {
var charCode = window.event.keyCode;
}
else if (e) {
var charCode = e.which;
}
else { return true; }
if ((charCode >= 48 && charCode <= 57) || (charCode >= 65 && charCode <= 90) || (charCode == 32) || (charCode >= 97 && charCode <= 122)) {
return true;
} else {
alert('Only Text And Number');
return false;
}}