Hi Martin

Not sure why it happens, but perhaps try running the script Mike Chambers mentions in the last post here? http://our.umbraco.org/forum/umbraco-7/using-umbraco-7/53211-Sequence-contains-not-matching-element?p=0#comment185351 (His first post).

/Jan

Hi Jan

Good morning and thanks for the suggestion! :-)

Unfortunately this problem is specific to Contour rather than Umbraco nodes, so in your example I didn't find any node problems.

My forms use custom PreValueFieldSourceTypes which I have written in C# and applied the FieldPreValueSource in C# too. In the CodeFirst form i've bound one custom value to a dropdown and one to a RadioButtonList. The whole thing is supposed to spring into action with Tims ContourFormBuilderHttpModule which get insert on app_startup as web.config entries.

When the CodeFirst forms incorporate these additional custom types I think i'm getting some kind of load order issue. I assume this is the case because I also get object exceptions, which would indicate the prevalue type hasn't been new'd up before the form.

If I remove my custom types altogether the problem goes away.

Here's some code just in case i'm doing something wrong, the prevalue first...

    // Adds a multilingual list of countries as a pre-value datasource (en.xml)
    public class Countries : FieldPreValueSourceType
    {
        public Countries()
        {
            this.Id = new Guid("8e9c49a9-68ca-4f81-8578-d3ebae2988d9");
            this.Name = "List of countries";
            this.Description = "Multilingual list of countries (http://unicode.org/ files need to be in /app_data/countrydata/)";
        }

        public override List ValidateSettings()
        {
            var ex = new List();

            if (!File.Exists(HttpContext.Current.Server.MapPath("/App_Data/CountryData/common/main/en.xml")))
                ex.Add(new Exception("Unicode Common Locale Data Repository not found, please download from http://cldr.unicode.org and place in /app_data/countrydata/ directory"));

            return ex;
        }

        public override List GetPreValues(Field field)
        {
            var pvs = new List();

            var d = new XmlDocument();
            if (File.Exists(HttpContext.Current.Server.MapPath(
                string.Format("/App_Data/CountryData/common/main/{0}.xml",
                              CultureInfo.CurrentCulture.TwoLetterISOLanguageName))))
            {
                d.Load(HttpContext.Current.Server.MapPath(
                    string.Format("/App_Data/CountryData/common/main/{0}.xml",
                                  CultureInfo.CurrentCulture.TwoLetterISOLanguageName)));
            }
            else
            {
                d.Load(HttpContext.Current.Server.MapPath(
                  "/App_Data/CountryData/common/main/en.xml"));
            }

            var countries = new List>();

            foreach (XmlNode c in d.SelectNodes("//territory [string-length(string(@type)) < 3]"))
                countries.Add(new KeyValuePair(c.Attributes["type"].Value, c.InnerText));

            countries.Sort((firstPair, nextPair) => String.Compare(firstPair.Value, nextPair.Value, StringComparison.Ordinal));

            int sort = 0;
            foreach (var c in countries)
            {
                PreValue pv = new PreValue();
                pv.Id = c.Key;
                pv.Value = c.Value;
                if (field != null)
                    pv.Field = field.Id;
                pv.SortOrder = sort;
                pvs.Add(pv);

                sort++;
            }
            return pvs;
        }
    }

    // prepopulate sources in umbraco
    [PrevalueSource("countries")]
    public class PrevalueSourceCountries : PrevalueSourceBase
    {
        public override FieldPreValueSourceType Type
        {
            get
            {
                FieldPreValueSourceType pvs = new Countries();
                return pvs;
            }
        }
    }

And the form with the attribute to bind the pre-value

 //Change of address form
    [Form("Member forms/Change of address", ShowValidationSummary = false, DisableDefaultStylesheet = true,
        Id = "d73be165-4fbb-45fe-9614-4e06b1576b0e")]
    public class ChangeOfAddress : FormBase
    {
        [Field("Change of address", "", Mandatory = true, InvalidErrorMessage = "This field is required", Caption = "Address 1")]
        public string AddressLine1 { get; set; }

        [Field("Change of address", "", Mandatory = false, Caption = "Address 2")]
        public string AddressLine2 { get; set; }

        [Field("Change of address", "", Mandatory = false, Caption = "Address 3")]
        public string AddressLine3 { get; set; }

        [Field("Change of address", "", Mandatory = false, Caption = "Address 4")]
        public string AddressLine4 { get; set; }

        [Field("Change of address", "", Mandatory = false, Caption = "Country", Type = typeof(DropDownList), PrevalueSource = "countries", DefaultValue = "United Kingdom")]
        public string Country { get; set; }

        [Field("Change of address", "", Mandatory = false, Caption = "Postcode", AdditionalSettings = new string[] { "maxLength: 9" }, Type = typeof(TextFieldExtended))]
        public string PostCode { get; set; }

        public override IEnumerable<Exception> Validate()
        {
            var e = new List<Exception>();
            return e;
        }

        public override void Submit()
        {
            var memberDetails = FormsHelpers.GetPeriodsOfService();
            var memberId = 0;

            if (memberDetails.Length > 0)
            {
                memberId = memberDetails[0].MemberId;
            }

            Node currentNode = Node.GetCurrent();
            var allNodes = currentNode.GetAncestorOrSelfNodes();
            var rootNode = allNodes.First(x => x.Level == 1);
            var email = String.Empty;

            if (rootNode.HasProperty("siteEmail") && rootNode.GetProperty("siteEmail") != null)
            {
                email = rootNode.GetProperty("siteEmail").Value;
            }

            var user = Membership.GetUser();
            var memberEmail = user.Email;
            var memberUserName = user.UserName;
            StringBuilder builder = new StringBuilder();
            builder.Append("<style>p, strong, h1, h2 { font-family: arial; } </style>");
            builder.Append(String.Format("<p><strong>Member Id:</strong> {0}</p>", memberId));
            builder.Append(String.Format("<p><strong>Address Line 1:</strong> {0}</p>", AddressLine1));
            builder.Append(String.Format("<p><strong>Address Line 2:</strong> {0}</p>", AddressLine2));
            builder.Append(String.Format("<p><strong>Address Line 3:</strong> {0}</p>", AddressLine3));
            builder.Append(String.Format("<p><strong>Address Line 4:</strong> {0}</p>", AddressLine4));
            builder.Append(String.Format("<p><strong>Country:</strong> {0}</p>", Country));
            builder.Append(String.Format("<p><strong>Postcode:</strong> {0}</p>", PostCode));

            library.SendMail(memberEmail, email, "Change of Address Form", 
                String.Format("<h1>New message from {0}</h1>{1}", memberUserName, builder.ToString()), true);

            FormsHelpers.LogActivity(String.Format("Submitted '{0}'", Node.GetCurrent().Name));
        }
    }

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