自阿贾克斯绑定不能正常工作 [英] Custom Ajax Binding does not work properly

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问题描述

我有以下code自定义的Ajax绑定。这具有以下即使它的第一页中显示的数据的问题。

request.Sorts 即将为NULL到Orders_Read方法

request.PageSize 0为即将在Orders_Read方法

request.Page 为1来到Orders_Read方法(即使我点击第2页)

这里需要做什么样的变化,以得到适当的排序和页面大小值?

请注意:我使用MVC包装的剑道电网

查看

  @ Scripts.Render(〜/包/ jQuery的)<脚本类型=文/ JavaScript的>
$(文件)。就绪(函数(){
    $('#Submit1')。点击(函数(){
        警报('1');
        $('#grid12')的数据(kendoGrid')dataSource.read()。
    });
});
< / SCRIPT>
@model KendoPratapSampleMVCApp.Models.Sample
@ {
ViewBag.Title =CustomAjaxbind;
}< H2> CustomAjaxbind< / H>
@using(Html.BeginForm(PostValues​​,CustomAjaxBinding,FormMethod.Post))
{<输入ID =Submit1类型=按钮值=SubmitValue/>
@(Html.Kendo()网格和LT; KendoPratapSampleMVCApp.Models.Sample>()
。名称(grid12)
.EnableCustomBinding(真)
.Columns(列=> {
    columns.Bound(p值=> p.SampleDescription).Filterable(假).WIDTH(100);
    columns.Bound(P => p.Sample code).Filterable(假).WIDTH(100);
    columns.Bound(p值=> p.SampleItems).Filterable(假).WIDTH(100);
})
.Pageable()
.Sortable()
.Scrollable()
.AutoBind(假)
.Filterable()
.HtmlAttributes(新{风格=高度:430px;})
.DataSource(数据源=>数据源
    阿贾克斯()
    .PageSize(2)
    .Read(读=> read.Action(Orders_Read,CustomAjaxBinding))
 )

}

控制器

 公共类CustomAjaxBindingController:控制器
{
    //
    // GET:/ CustomAjaxBinding /    公众的ActionResult指数()
    {
        返回视图(CustomAjaxbind);
    }    公众的ActionResult Orders_Read([DataSourceRequest(preFIX =grid12)] DataSourceRequest要求)
    {        字符串=的SortFieldSampleDescription;
        字符串sortDirection =的String.Empty;        如果(request.Sorts!= NULL)
        {
            的foreach(SortDescriptor sortDescriptor在request.Sorts)
            {
                =的SortField sortDescriptor.Member;
                如果(sortDescriptor.SortDirection == ListSortDirection.Ascending)
                {
                    sortDirection =升序;
                }
                其他
                {
                    sortDirection =降序;
                }
            }
        }        INT总= 1;
        INT myPageSize = 2;
        如果(request.PageSize!= 0)
        {
            myPageSize = request.PageSize;
        }        IEnumerable的<样品> currentSamples = GetSubsetEmployees(request.Page - 1,myPageSize,出总共的SortField,sortDirection);        VAR的结果=新DataSourceResult()
        {
            数据= currentSamples,
            总记录=总//总数
        };        返回JSON(结果);
    }    公共IEnumerable的<样品> GetSubsetEmployees(INT的PageIndex,诠释的pageSize,OUT INT ITEMCOUNT,字符串的SortField,串sortDirection)
    {        IEnumerable的<样品>样本= GetSamples();
        ITEMCOUNT = samples.ToList()计数。        VAR选择=新的函数功能<样品,对象>(E =方式> e.GetType()的getProperty(的SortField).GetValue(即,NULL));
        VAR的查询= sortDirection.Equals(降,StringComparison.OrdinalIgnoreCase)
                        ? samples.OrderByDescending(选择)
                        :samples.OrderBy(选择);        清单<样品> currentPageEmployees =查询
            .Skip(PageIndex的* pageSize的)
            。取(pageSize的)
            .ToList();        返回currentPageEmployees;    }   公共静态的IEnumerable<样品> GetSamples()
    {
        清单<样品> sampleAdd =新的List<样品>();
        样品S12 =新样本();
        s12.Sample code =1;
        s12.SampleDescription =A;
        s12.SampleItems =newone;        样品S2 =新样本();
        s2.Sample code =2;
        s2.SampleDescription =B;
        s2.SampleItems =oldone;        样品S3 =新样本();
        s3.Sample code =3;
        s3.SampleDescription =C;
        s3.SampleItems =latestone;        样品S4 =新样本();
        s4.Sample code =4;
        s4.SampleDescription =D;
        s4.SampleItems =latestoneitem;        sampleAdd.Add(S12);
        sampleAdd.Add(S2);
        sampleAdd.Add(S3);
        sampleAdd.Add(S4);
        返回sampleAdd;
    }
  }

型号

 命名空间KendoUIMvcSample.Models
{
公共类SampleModel
{
    公开名单<样品>样本;
}
公共类样品
{
    公共字符串SampleDescription {搞定;组; }
    公共字符串示例code {搞定;组; }
    公共字符串SampleItems {搞定;组; }
}
}


解决方案

我有同样的问题,因为你终于在调查问题耗费多少次后找到了解决办法最近。我张贴在这里,如果别人遇到了同样的问题。

您需要删除的 preFIX 从参数:

 公众的ActionResult Orders_Read([DataSourceRequest(preFIX =grid12)] DataSourceRequest要求)

转换为:

 公众的ActionResult Orders_Read([DataSourceRequest] DataSourceRequest要求)

我不知道这是不是从剑道中的错误或不!但是,在这种情况下的电网不能定义为preFIX被找到。

您可以找到一个例子<一个href=\"http://www.telerik.com/clientsfiles/081750a6-57f2-4106-8a6d-1787a0802214_custom-binding.rar?sfvrsn=0\"相对=nofollow>这里

I have following code for Custom Ajax Binding. This has following problems even though it is displaying data for the first page.

• The request.Sorts is coming as NULL in to the Orders_Read method

• The request.PageSize is coming as 0 to the Orders_Read method

• The request.Page is coming as 1 to the Orders_Read method (even if I click on the page 2)

What changes need to be done here to get proper sort and pagesize values?

Note: I am using MVC Wrapper for Kendo Grid.

VIEW

@Scripts.Render("~/bundles/jquery")

<script type ="text/javascript">      
$(document).ready(function (){
    $('#Submit1').click(function () {
        alert('1');
        $('#grid12').data('kendoGrid').dataSource.read();
    });
});  
</script>
@model KendoPratapSampleMVCApp.Models.Sample
@{
ViewBag.Title = "CustomAjaxbind";
}

<h2>CustomAjaxbind</h2>
@using (Html.BeginForm("PostValues", "CustomAjaxBinding", FormMethod.Post))
{ 

<input id="Submit1" type="button" value="SubmitValue" />
@(Html.Kendo().Grid<KendoPratapSampleMVCApp.Models.Sample>()    
.Name("grid12")
.EnableCustomBinding(true)
.Columns(columns => {
    columns.Bound(p => p.SampleDescription).Filterable(false).Width(100);
    columns.Bound(p => p.SampleCode).Filterable(false).Width(100);
    columns.Bound(p => p.SampleItems).Filterable(false).Width(100);
})
.Pageable()
.Sortable()
.Scrollable()
.AutoBind(false)
.Filterable()
.HtmlAttributes(new { style = "height:430px;" })
.DataSource(dataSource => dataSource
    .Ajax()
    .PageSize(2)
    .Read(read => read.Action("Orders_Read", "CustomAjaxBinding"))
 )
)
}

Controller

public class CustomAjaxBindingController : Controller
{
    //
    // GET: /CustomAjaxBinding/

    public ActionResult Index()
    {
        return View("CustomAjaxbind");
    }

    public ActionResult Orders_Read([DataSourceRequest(Prefix = "grid12")]DataSourceRequest request)
    {

        string sortField = "SampleDescription";
        string sortDirection = string.Empty;

        if (request.Sorts != null)
        {
            foreach (SortDescriptor sortDescriptor in request.Sorts)
            {
                sortField = sortDescriptor.Member;
                if (sortDescriptor.SortDirection == ListSortDirection.Ascending)
                {
                    sortDirection = "Ascending";
                }
                else
                {
                    sortDirection = "Descending";
                }
            }
        }

        int total = 1;
        int myPageSize = 2;  
        if(request.PageSize !=0)
        {
            myPageSize = request.PageSize;
        }

        IEnumerable<Sample> currentSamples = GetSubsetEmployees(request.Page - 1, myPageSize, out total, sortField, sortDirection);

        var result = new DataSourceResult()
        {
            Data = currentSamples, 
            Total = total // Total number of records
        };

        return Json(result);
    }

    public IEnumerable<Sample> GetSubsetEmployees(int pageIndex, int pageSize, out int itemCount, string sortField, string sortDirection)
    {

        IEnumerable<Sample> samples = GetSamples();
        itemCount = samples.ToList().Count;

        var selector = new Func<Sample, object>(e => e.GetType().GetProperty(sortField).GetValue(e, null));
        var query = sortDirection.Equals("descending", StringComparison.OrdinalIgnoreCase)
                        ? samples.OrderByDescending(selector)
                        : samples.OrderBy(selector);

        List<Sample> currentPageEmployees = query
            .Skip(pageIndex * pageSize)
            .Take(pageSize)
            .ToList();

        return currentPageEmployees;

    }

   public static IEnumerable<Sample> GetSamples()
    {
        List<Sample> sampleAdd = new List<Sample>();
        Sample s12 = new Sample();
        s12.SampleCode = "1";
        s12.SampleDescription = "A";
        s12.SampleItems = "newone";

        Sample s2 = new Sample();
        s2.SampleCode = "2";
        s2.SampleDescription = "B";
        s2.SampleItems = "oldone";

        Sample s3 = new Sample();
        s3.SampleCode = "3";
        s3.SampleDescription = "C";
        s3.SampleItems = "latestone";

        Sample s4 = new Sample();
        s4.SampleCode = "4";
        s4.SampleDescription = "D";
        s4.SampleItems = "latestoneitem";

        sampleAdd.Add(s12);
        sampleAdd.Add(s2);
        sampleAdd.Add(s3);
        sampleAdd.Add(s4);
        return sampleAdd;
    }


  }

Model

namespace KendoUIMvcSample.Models
{
public class SampleModel
{
    public List<Sample> samples;
}
public class Sample
{
    public string SampleDescription { get; set; }
    public string SampleCode { get; set; }
    public string SampleItems { get; set; }
}
}

解决方案

I had the same problem as yours and finally found the solution recently after consuming much times on investigating the problem. I post it here if someone else faced the same issue.

You need to remove Prefix from your parameter:

public ActionResult Orders_Read([DataSourceRequest(Prefix = "grid12")]DataSourceRequest request)

Converted to:

public ActionResult Orders_Read([DataSourceRequest]DataSourceRequest request)

I don't know if this is a bug from Kendo or not! But in this scenario grid can't be find by Prefix defined.

You can find an example here

这篇关于自阿贾克斯绑定不能正常工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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