如何为Kendo UI DropDownList和ComboBox启用ASP.Net MVC客户端验证？

Question

当我在MVC Razor视图中使用Kendo UI ComboBox和DropDownList控件时,客户端验证不会触发.这是一个例子:

@using Kendo.Mvc.UI
@model KendoDropDownTest.Models.TestModel

@{
    ViewBag.Title = "Kendo Drop Down and Combo Box Test";
}

<h2>Kendo Drop Down and Combo Box Test</h2>

@using (Html.BeginForm())
{
    @Html.ValidationSummary()

        <div>
            @Html.LabelFor(x => x.DropDownValue)
            @(Html.DropDownListFor(x => x.DropDownValue, Model.Options, "-- Select an Option --"))
            @Html.ValidationMessageFor(x => x.DropDownValue)
        </div>

    <fieldset>
        <legend>Kendo</legend>
        <div>
            @Html.LabelFor(x => x.KendoComboValue)
            @(Html.Kendo().ComboBoxFor(x => x.KendoComboValue)
                  .BindTo(Model.Options.Select(x => x.Text)))
            @Html.ValidationMessageFor(x => x.KendoComboValue)
        </div>

        <div>
            @Html.LabelFor(x => x.KendoDropDownValue)
            @(Html.Kendo().DropDownListFor(x => x.KendoDropDownValue)
                .OptionLabel("-- Select an Option --")
                .BindTo(Model.Options))
            @Html.ValidationMessageFor(x => x.KendoDropDownValue)
        </div>
    </fieldset>

    <input type="submit" value="Submit" />
}

和相应的型号:

public class TestModel
{
    [Required]
    public string DropDownValue { get; set; }
    [Required]
    public string KendoComboValue { get; set; }
    [Required]
    public string KendoDropDownValue { get; set; } 

    public SelectListItem[] Options = new[]
    {
        new SelectListItem
        {
            Text = "Option 1",
            Value = "1"
        }, 
        new SelectListItem
        {
            Text = "Option 2",
            Value = "2"
        }, 
        new SelectListItem
        {
            Text = "Option 3",
            Value = "3"
        }, 
    };
}

非Kendo UI下拉菜单适当地显示提交表单时的验证错误,但Kendo控件没有.如果有办法为这些控件启用客户端验证,请告诉我,而无需手动连接它.

完整的示例解决方案附加到以下Kendo论坛帖子:http: //www.kendoui.c​​om/forums/mvc/dropdownlist/mvc-client-validation-not-working.aspx

Answer 1

基于对Kendo论坛的响应,验证不起作用的原因是因为jquery validate默认情况下不验证隐藏字段.更改它的最简单方法是使用$ .validate.setDefaults方法来覆盖这种行为,如下所示:

$.validator.setDefaults({
    ignore: ""
});

这仍然不会将"input-validation-error"类添加到组合框或下拉列表中,但至少会添加验证错误,并使表单不会被提交.