Simple Validation for a Single Text Box in ASP.NET MVC

Question

I have added a text box to a simple form in ASP.NET MVC and I want a client-side 'required' validation for this.

I know I can do this using a strongly typed model view but I would like to do it manually in this case. Is there a simple way to perform this?

I tried setting the Model/property name of the Html.ValidationMessage helper to the input name but this didnt work:

@Html.TextBox("emailStr" )
@Html.ValidationMessage("emailStr","* Required")

The "simple" way of doing it would be to write javascript to do validation on form submit, return false if it failed and add appropriate text and css classes — Joakim
– Joakim, Commented Sep 23, 2011 at 11:34

archil · Accepted Answer · 2011-09-23 11:32:02Z

2

Assuming you use default jQuery validation plugin, you can use Rules.Add method on client side for this

$("#emailStr").rules("add", {
 required: true,
 messages: {
   required: "* Required",
 }
});

Also, do not forget to include jquery.validate.min.js

answered Sep 23, 2011 at 11:32

archil

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PeteGO · Accepted Answer · 2011-09-23 11:37:22Z

0

Not sure why you would want to do it manually - but I don't think you can use @Html.ValidationMessage unless you use a TextBoxFor. You can't use the TextBoxFor unless you have a model to work with inside the view.

You could write some javascript/jquery to find the textbox and make sure it's not empty, and if it is, unhide an element with the validation message in it.

answered Sep 23, 2011 at 11:37

PeteGO

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