umbraco does not exist in the current context - Umbraco 8

Noor Alam 26 posts 97 karma points

Aug 31, 2019 @ 09:33

umbraco does not exist in the current context.

using System; using System.Collections.Generic; using System.Xml.XPath; using System.Web.Mvc; using System.Web.Configuration; using Umbraco.Core; using Umbraco.Core.Models; using Umbraco.Core.Services;

namespace umbracodemo2.Helpers { public class PreValueHelper { private const string APPSETTINGERROR_MESSAGE = "Invalid or missing appSetting, ";

    public List<SelectListItem> GetPreValuesFromDataTypeId(int dataTypeId)
    {
        List<SelectListItem> preValueSelectorList = new List<SelectListItem>();

        XPathNodeIterator iterator = umbraco.library.GetPreValues(dataTypeId);
        iterator.MoveNext();
        XPathNodeIterator preValues = iterator.Current.SelectChildren("preValue", "");

        while (preValues.MoveNext())
        {
            string preValueIdAsString = preValues.Current.GetAttribute("id", "");
            int preValueId = 0;
            int.TryParse(preValueIdAsString, out preValueId);
            string preValue = preValues.Current.Value;
            preValueSelectorList.Add(new SelectListItem { Value = preValue, Text = preValue });
        }

        return preValueSelectorList;
    }

    public List<SelectListItem> GetPreValuesFromAppSettingName(string appSettingName)
    {
        int dataTypeId = GetIntFromAppSetting(appSettingName);
        List<SelectListItem> preValues = GetPreValuesFromDataTypeId(dataTypeId);
        return preValues;
    }

    private int GetIntFromAppSetting(string appSettingName)
    {
        int intValue = 0;
        string setting = GetStringFromAppSetting(appSettingName);
        if (!int.TryParse(setting, out intValue))
        {
            throw new Exception(APP_SETTING_ERROR_MESSAGE + appSettingName);
        }
        return intValue;
    }

    private string GetStringFromAppSetting(string appSettingName)
    {
        string setting = WebConfigurationManager.AppSettings[appSettingName] as string;
        if (String.IsNullOrEmpty(setting))
        {
            throw new Exception(APP_SETTING_ERROR_MESSAGE + appSettingName);
        }
        return setting;
    }


}

}

=======================================================

In above Prehelper file for dropdown list, I am getting error "The name 'umbraco' does not exist in the current context." Please check below code line

XPathNodeIterator iterator = umbraco.library.GetPreValues(dataTypeId);

Since I am using umbraco V8 Please suggest.

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Steve Megson 151 posts 1024 karma points MVP c-trib

Aug 31, 2019 @ 13:47

Something like this should work in Umbraco 8:

using Umbraco.Core.Models;    
using Umbraco.Core.PropertyEditors;
using Umbraco.Web.Composing;

return Current.Services.DataTypeService.GetDataType(dataTypeId)
                                       .ConfigurationAs<ValueListConfiguration>()
                                       .Items
                                       .Select(i => new SelectListItem { Value = i.Id.ToString(), Text = i.Value })
                                       .ToList();

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Noor Alam 26 posts 97 karma points

Aug 31, 2019 @ 18:21

Thanks Steve ... Its working.

One more thing ... Once page load Dropdownlist binding is done successfully but when i am trying to submitting Dropdownlist data using below mention HandleFormSubmit() function then Dropdownlist value showing null and not saving data for same and other values saved into database. Please suggest.

==============================================================

using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using Umbraco.Web.Mvc; using umbracodemo2.Models; using umbracodemo2.Helpers; using System.Net.Mail;

namespace umbracodemo2.Controllers { public class ContactController : SurfaceController { private PreValueHelper preValueHelper => new PreValueHelper();

    private const string Partial_View_Path = "~/Views/Partials/SharedLayout/";
    public ActionResult RenderContact()
    {
        ContactModel model = new ContactModel();
        model.Subjects = preValueHelper.GetPreValuesFromAppSettingName("SubjectDropDown");
        model.IsCustomers = preValueHelper.GetPreValuesFromAppSettingName("CustomerDropDown");

        return PartialView(string.Format("{0}ContactPartial.cshtml", Partial_View_Path), model);
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult HandleFormSubmit(ContactModel model)
    {
        if (ModelState.IsValid)
        {
            var message = Services.ContentService.CreateAndSave(string.Format("{0}-{1}", model.Name, DateTime.Now.ToString()),
                CurrentPage.Id, "contactContent");

            message.SetValue("subject", model.Subjects);
            message.SetValue("username", model.Name);
            message.SetValue("email", model.Email);
            message.SetValue("isCustomer", model.IsCustomers);
            message.SetValue("message", model.Message);
            TempData["ContactUsSuccess"] = true;
            Services.ContentService.SaveAndPublish(message);
            //SendEmail(model);
            return RedirectToCurrentUmbracoPage();
        }
        return CurrentUmbracoPage();
    }


}

}

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Noor Alam 26 posts 97 karma points

Sep 02, 2019 @ 22:20

Kindly suggest guys... waiting response

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Steve Megson 151 posts 1024 karma points MVP c-trib

Sep 03, 2019 @ 12:16

What's in your ContactPartial.cshtml? I assume that ContentModel.Subjects is an IEnumerable<SelectListItem>?

A <select> in your view will only post back the value of the selected option, so MVC has no way to convert that string to an IEnumerable<SelectListItem> and populate model.Subjects for you.

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Noor Alam 26 posts 97 karma points

Sep 03, 2019 @ 14:16

Model Class :-

public class ContactModel { public int Id { get; set; }

    [Display(Name = "Subject:")]
    [Required(ErrorMessage = "Please choose Subject")]
    public string Subject { get; set; }
    public List<SelectListItem> Subjects { get; set; }


    [Required(ErrorMessage ="Enter Name")]
    public string Name { get; set; }

    [Required(ErrorMessage ="Enter Email")]
    [EmailAddress]
    public string Email { get; set; }


    [Display(Name = "Customer Type:")]
    [Required(ErrorMessage = "Please choose Customer")]
    public string IsCustomer { get; set; }
    public List<SelectListItem> IsCustomers { get; set; }

    [Required(ErrorMessage = "Enter message")]
    public string Message { get; set; }

}

Contact Partial View :-

@using (Html.BeginUmbracoForm("HandleFormSubmit", "Contact", FormMethod.Post)) {

    @Html.AntiForgeryToken()
    @Html.ValidationSummary();

    <div class="field half first">
        @Html.LabelFor(m => m.Subjects)
        @Html.DropDownListFor(m => m.Subject, Model.Subjects, "Please Select...")
        @Html.ValidationMessageFor(m => m.Subject)
    </div>
    <div class="field half first">
        @Html.LabelFor(m => m.Name)
        @Html.TextBoxFor(m => m.Name)
        @Html.ValidationMessageFor(m => m.Name)
    </div>
    <div class="field half">
        @Html.LabelFor(m => m.Email)
        @Html.TextBoxFor(m => m.Email)
        @Html.ValidationMessageFor(m => m.Email)
    </div>
    <div class="field half">
        <div class="field half first">
            @Html.LabelFor(m => m.IsCustomers)
            @Html.DropDownListFor(m => m.IsCustomer, Model.IsCustomers, "Please Select...")
            @Html.ValidationMessageFor(m => m.IsCustomer)
        </div>
    </div>
    <div class="field">
        @Html.LabelFor(m => m.Message)
        @Html.TextAreaFor(m => m.Message)
        @Html.ValidationMessageFor(m => m.Message)
    </div>
    <ul class="actions">
        <li>
            <button>Send Message</button>
        </li>
    </ul>
}

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Steve Megson 151 posts 1024 karma points MVP c-trib

Sep 03, 2019 @ 14:55

It looks like you just need to be reading model.Subject rather than model.Subjects.

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Noor Alam 26 posts 97 karma points

Sep 03, 2019 @ 15:53

Thanks Steve... its working.

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umbraco does not exist in the current context.