[英]asp.net MVC 4 Telerik Grid Ajax issue
i am facing an issue with mvc telerik grid there is my view : 我正面临mvc telerik网格的问题,有我的观点:
@(Html.Telerik().Grid(Model.EmployeeList)
.Name("EmployeeGrid")
.Columns(colums =>
{
colums.Bound(e => e.First_Name);
colums.Bound(e => e.Last_Name);
colums.Bound(e => e.Hire_Date);
colums.Bound(e => e.Home_Phone);
})
.DataBinding(dataBinding => dataBinding.Ajax().Select("_AjaxBinding", "Home"))
.Groupable()
.Sortable()
.Pageable(paging=>paging.PageSize(10))
.Filterable()
)
and there is my controller code 还有我的控制器代码
[AcceptVerbs(HttpVerbs.Post)]
[GridAction]
public ActionResult _AjaxBinding(GridCommand command)
{
using (var contax=new NorthwindEntities()){
int pagesize=command.PageSize;
int page=command.Page;
var EmployeeList = (from items in contax.Employees
select new
{
items.First_Name,
items.Last_Name,
items.Hire_Date,
items.Home_Phone
});
return View(new GridModel
{
Data = EmployeeList
});
}
}
on load the data is loaded correctly from database but internal server error 500 occur when i click on paging or sort data. 在加载时,数据从数据库正确加载,但当我点击分页或排序数据时,会发生内部服务器错误500。
thanks in advance. 提前致谢。
you are using a Linq query inside a disposable scope.but the query execution is deferred until using it (when you have left using {}
scope). 您正在一次性范围内使用Linq查询。但是查询执行将推迟到使用它时(当您
using {}
范围时)。 and you'r context is disposed! 并且你的背景被处理掉! solution :
方案:
add .ToList
at the end of query : 在查询结尾添加
.ToList
:
var EmployeeList = (from items in contax.Employees
select new
{
items.First_Name,
items.Last_Name,
items.Hire_Date,
items.Home_Phone
}).ToList();
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