Validation didn't work on kendoUI multi-element

I am creating a form using MVC4. I have used kendo multiselect here and will try to validate via model annotation.

My code:

@model WEBAPP._2012.Models.DeviceInventory.DeviceTechnologyModel

<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

@using (Ajax.BeginForm("Create", "Device_TechnologyInventory", new AjaxOptions { HttpMethod = "POST", OnSuccess = "onSuccessAddTechnology" })) { @Html.ValidationSummary(true)

<table width="100%" cellspacing="0" cellpadding="0" border="0">
  <tr>
    <td>
      <@Html.LabelFor(model=>model.Name)</td>
    <td class="editor-field" width="160px;">
      @Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name)
    </td>
  </tr>

  <tr>
    <td>@Html.LabelFor(model => model.Alias)</td>
    <td class="editor-field">
      @Html.EditorFor(model => model.Alias) @Html.ValidationMessageFor(model => model.Alias)
    </td>
  </tr>

  <tr>
    <td>@Html.LabelFor(model => model.Vendors)/td>
      <td class="editor-field">
        @(Html.Kendo().MultiSelectFor(model=>model.Vendors) .Name("Vendors").Placeholder("Select") .BindTo(new SelectList(ViewBag.VendorList, "Value", "Text")) ) @Html.ValidationMessageFor(model => model.Vendors)
      </td>
  </tr>
</table>

<div class="CreateWrp">
  <input type="submit" value="Create " class="btn-success"/>
  <input type="reset" value="Reset " class="btn-primary" />
</div>

      

My model:

    public class DeviceTechnologyModel
    {
        public int Id { get; set; }
        [Required(ErrorMessage = "*")]
        [Display(Name = "Device Technology")]
        public string Name { get; set; }
        [Required(ErrorMessage = "*")]
        [Display(Name = "Alias")]
        public string Alias { get; set; }
        [Required(ErrorMessage = "*")]
        [Display(Name = "Device vendors")]
        public List<string> Vendors { get; set; }
    }

      

When I clicked the Submit button, the validation error appears in both the Name and Alias ​​fields, but not in the Suppliers field.

I don't want to use validation javascript

.

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1 answer


You need to check the value, not the list object.

You may need to make the following changes to your model:

public class DeviceTechnologyModel
{
        public int Id { get; set; }
        [Required(ErrorMessage = "*")]
        [Display(Name = "Device Technology")]
        public string Name { get; set; }
        [Required(ErrorMessage = "*")]
        [Display(Name = "Alias")]
        public string Alias { get; set; }

        [Required]
        [Required(ErrorMessage = "*")]
        [Display(Name = "Device vendors")]
        public int VendorId { get; set; }

        public List<string> Vendors { get; set; }
}

      

In your view:



<tr>
    <td>@Html.LabelFor(model => model.Vendors)/td>
      <td class="editor-field">
        @(Html.Kendo().MultiSelectFor(model=> model.VendorId)
                      .Name("Vendors").Placeholder("Select")
                      .BindTo(new SelectList(ViewBag.VendorList, "Value", "Text"))) 
       @Html.ValidationMessageFor(model => model.VendorId)
      </td>
  </tr>

      

Make sure the property VendorId

contains any value or not when submitting the form .

If it has nothing, the validation should work.

Hope it helps.

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