How to do textbox validations(compare textbox value) in MVC?

Question

0.00/5 (No votes)

See more:

Hi,

I want to do validation for textboxes,
In my model I have two properties say

C#

[Required]
public int StartRange {get; set;}
[Required]
public int EndRange {get; set;}

In my view

C#

@Html.LabelFor(m => m.SignalStartRange, new { @class = "labelColor" }):
@Html.TextBoxFor(m => m.SignalStartRange, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.SignalStartRange, "", new { @class = "text-danger"})

@Html.LabelFor(m => m.SignalEndRange, new { @class = "labelColor" }) :
@Html.TextBoxFor(m => m.SignalEndRange, new { @class = "form-control" })
@Html.ValidationMessageFor(m => m.SignalEndRange, "", new { @class = "text-danger" })

I have to do validation that EndRange Should not be lesser than StartRange.

Please anyone help me how to do this.

What I have tried:

I was chechecking any data annotation attribute that will compare numbers.

Posted 9-Aug-17 18:38pm

Member 11859517

Updated 9-Aug-17 23:22pm

Add a Solution

2 solutions

Solution 1

You need to do client-side validation using javascript or jquery. Here is an example with a slider: Asp.Net MVC 5 with Jquery slider | The ASP.NET Forums[^] and here is a jquery dual range slider: jQRangeSlider: jQuery plugin for range sliders[^]

It should not be difficult to create a working solution from the above links.

Posted 9-Aug-17 18:49pm

Graeme_Grant

Comments

Member 11859517 10-Aug-17 1:20am

thanks, Is it relevant to my question?
i want two integer textboxes comparison. that last shoud not be lesser than first.

Graeme_Grant 10-Aug-17 3:17am

I was recommending an alternative, that's is all.

But if you want to only use text entry, then you need to do custom client-side validation using javascript or jquery, not data annotation server side.

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Member 11859517 · Accepted Answer · 2017-08-09T23:22:00

I found out the solution, Here i created my custom attribute, [GreaterThan]

C#

[Required(ErrorMessage = "Signal Start Range Field Is Mandatory.")]  
        [DisplayName("Signal Start Range")]
        public string SignalStartRange { get; set; }

[Required(ErrorMessage = "Signal End Range Field Is Mandatory.")]
        [DisplayName("Signal End Range")]
        [GreaterThan(PropName = "SignalStartRange", ErrorMessage ="End rand should not be lesser than start ragne")]
        public string SignalEndRange { get; set; }



public class GreaterThanAttribute: ValidationAttribute
    {
        public string PropName { get; set; }

        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            PropertyInfo otherPropertyInfo = validationContext.ObjectType.GetProperty(PropName);

            var otherPropertyStringValue = otherPropertyInfo.GetValue(validationContext.ObjectInstance, null).ToString();

            if(Convert.ToUInt32(value) < Convert.ToUInt32(otherPropertyStringValue))
            {
                return new ValidationResult(FormatErrorMessage(validationContext.DisplayName));
            }
            return null;
        }
    }