WFFM Form field is null

Question

I am trying to get the value of WFFM form fields in code on submit button click. I tried Request.Form["First Name"]. but I am getting null for all field names even if the field has data. Can anyone please suggest how I can get field (text or checkbox) value. I am using the code below:

var nameField = this.Form.Fields.FirstOrDefault(m => m.Name == "First Name");
if(nameField != null && Request.Form["First Name"] != null)
{
    //Do something
}

Answer 1

You're using WFFM custom save action, so your Execute method should look like:

public void Execute(ID formid, AdaptedResultList fields, params object[] data)

What you can do to get the value of a field is to use the fields AdaptedResultList and create a helper method like:

private string GetValue(string formFieldId, AdaptedResultList fields)
{
    if (string.IsNullOrWhiteSpace(formFieldId))
    {
        return null;
    }
    if (fields == null || fields.GetEntryByID(formFieldId) == null)
    {
        return null;
    }
    return fields.GetValueByFieldID(formFieldId);
}

and then you call it as:

var FirstName = GetValue("First Name", fields);

Answer 2

Try getting the value from the FormSubmitContext object vs this. :

var postedFormData = formSubmitContext.PostedFormData;
var nameField = postedFormData.Fields.FirstOrDefault(p => p.Name.Equals("First Name");
if(nameField != null)
{
 ...
}

And check this out: https://ggullentops.blogspot.com/2017/10/sitecore-9-forms-custom-submit-action.html

Let me know if that helps!