为什么Kendo DropDownList无法通过控制器操作的json结果初始化 [英] Why Kendo DropDownList can not be initialized by json result from controller action

问题描述

我有一个Kendo DropDownlist，如下所示:

I have a Kendo DropDownlist as follow

<%= Html.Kendo().DropDownList()
        .Name("AssignDisciplineId")
        .DataSource(dataSource =>
             {
                dataSource.Read(read =>
                {  
                    read.Action("DisciplinesBySportAjax","Shared").Data("onDisciplinesBySportData");                        
                });
             })
        .Events(events => events    
                 .Change("onAssignDisciplineComboChanged")
               )
        .HtmlAttributes(new { style = "font-size:8pt;" })
%>

function onDisciplinesBySportData(e)
{
    var sportId = $('#AssignSportsId').data('kendoDropDownList').value();
    return { sportId: sportId }
}

public JsonResult DisciplinesBySportAjax(string sportId)
{
     var sports = this._sportBL.GetDisciplinesBySport(sportId);

     return Json(new SelectList(sports, "Id", "Description"), JsonRequestBehavior.AllowGet); 
}

但是下拉列表中填充了[object object].将以下内容添加到Html.Kendo().DropDownList()

But dropdownlist is filled with [object object]. After adding following to Html.Kendo().DropDownList()

.DataTextField("Description")
.DataValueField("Id")

下拉列表用[undefined]填充.我需要这方面的帮助.谢谢.

dropdownlist is filled with [undefined]. I need help on this. Thanks.

推荐答案

将DisciplinesBySportAjax()更改为

After changing DisciplinesBySportAjax() to

public JsonResult DisciplinesBySportAjax(string sportId)
{
    var sports = this._sportBL.GetDisciplinesBySport(sportId);

    return Json(sports, JsonRequestBehavior.AllowGet);
}

即使它仍然需要DataTextField("Description")和DataValueField("Id")，它仍然可以正常工作.

It works fine, despite it still needs DataTextField("Description") and DataValueField("Id").

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