Episerver forms - form element validation using data from other f

Episerver forms - form element validation using data from other form fields

Mikko Ukkola

Vote:

Hi,

I'd like to create a custom form element with validation, so that validation checks other values from the same form.

Is it possible to read data from other fields during element validation? If so, how can I access the data?

Thanks in advance!

#180818

Jul 27, 2017 12:38

Dac Thach Nguyen

Vote:

Hi,

Yes, you can read other fields data during element validation. Example:

var submitData = HttpContext.Current.Request.HttpMethod == "POST" ? HttpContext.Current.Request.Form : HttpContext.Current.Request.QueryString;

then you can get a specific element value by using: submitData["__field_123"]. The __field_123 is element name, you can get element name from element content link via extension method:

public static string GetElementName(this ContentReference elementLink)
{
    return string.Format("{0}{1}", Constants.ElementIdPrefix, elementLink);
}

/DT

#180830

Jul 28, 2017 5:06

Mikko Ukkola

Vote:

Thanks a lot, I got it working.

/Mikko

#180831

Jul 28, 2017 8:25

Thach

Vote:

Add my 2cents, the (internal) extension has already existed in

namespace EPiServer.Forms.Helpers.Internal

static class FormsExtensions

public static string GetElementName(this ContentReference elementLink)

#180956

Aug 03, 2017 5:20

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Episerver forms - form element validation using data from other form fields