必须先绑定数据源，然后才能执行此操作。 Web网格错误 [英] A data source must be bound before this operation can be performed. Web grid Error

问题描述

你好，

我在运行我的代码时遇到错误。我在mvc3中有点新请帮助我



index.cshtml

 @ model IEnumerable< irasoftwares.models.person> 
 @ {
 ViewBag.Title =  主页; 
 WebGrid grid =  new  WebGrid（）; 
} 

< h2>人员名单< /   h2  >  
 @ grid.GetHtml（列： new  [] {
 grid.Column（  ID），
 grid.Column（ 名称 ），
 grid.Column（ 姓氏）
}）

型号代码

 命名空间 IRASoftwares.Models 
 {
  public   class  Person 
 {
  public   int  id { get ;  set ; } 
  public   string 名称{ get ;  set ; } 
  public   string 姓氏{ get ;  set ; } 
} 
} 

和控制器

  public  ActionResult Index（）
 { 
 Person loperson =  new  Person（）; 
列表< person> lapeaople =  new  List< person>（）; 
 
 loperson.id =  101 ; 
 loperson.Name =   Lakhan; 
 loperson.Surname =   Aanjana; 
 lapeaople.Add（loperson）; 
 
 loperson =  new  Person（）; 
 loperson.id =  102 ; 
 loperson.Name =   Manish; 
 loperson.Surname =   Aanjana; 
 lapeaople.Add（loperson）; 
 
 loperson =  new  Person（）; 
 loperson.id =  103 ; 
 loperson.Name =   Mahesh; 
 loperson.Surname =   Patel; 
 lapeaople.Add（loperson）; 
 
 loperson =  new  Person（）; 
 loperson.id =  104 ; 
 loperson.Name =   Nittile; 
 loperson.Surname =   Gupta; 
 lapeaople.Add（loperson）; 
 
 loperson =  new  Person（）; 
 loperson.id =  105 ; 
 loperson.Name =   Harish; 
 loperson.Surname =   Verma; 
 lapeaople.Add（loperson）; 
 
 loperson =  new  Person（）; 
 loperson.id =  106 ; 
 loperson.Name =   Lokesh; 
 loperson.Surname =   Mor; 
 lapeaople.Add（loperson）; 
  var  data = lapeaople; 
 
  return 查看（数据）; 
 
} 
 

但我收到错误请帮帮我

解决方案

它为您提供错误，因为您没有将模型分配给网格，请检查以下链接：



http://weblogs.asp.net/scottgu/archive/2010/07/02/introducing-razor .aspx [ ^ ]

如何使用razor在asp.net mvc 4中使用网格引擎 [ ^ ]

你有返回Ienumarable< loperson>



然后它工作正常。



和你的v iew

@model Ienumerable< irasoftwares.models.person>



如果不能恢复你的冥想。

Hello,
I am Getting error while run my code.i am bit new in mvc3 please help me

index.cshtml

@model IEnumerable<irasoftwares.models.person>
@{
    ViewBag.Title = "Home Page";
    WebGrid grid = new WebGrid();
}

<h2>List Of Person</h2>
@grid.GetHtml(columns:new[]{
grid.Column("ID"),
grid.Column("Name"),
grid.Column("Last Name")
})

model code

namespace IRASoftwares.Models
{
    public class Person
    {
        public int id { get; set; }
        public string Name { get; set; }
        public string Surname { get; set; }
    }
}

and controller

public ActionResult Index()
       {
           Person loperson = new Person();
           List<person> lapeaople = new List<person>();

           loperson.id = 101;
           loperson.Name = "Lakhan";
           loperson.Surname = "Aanjana";
           lapeaople.Add(loperson);

           loperson = new Person();
           loperson.id = 102;
           loperson.Name = "Manish";
           loperson.Surname = "Aanjana";
           lapeaople.Add(loperson);

           loperson = new Person();
           loperson.id = 103;
           loperson.Name = "Mahesh";
           loperson.Surname = "Patel";
           lapeaople.Add(loperson);

           loperson = new Person();
           loperson.id = 104;
           loperson.Name = "Nittile";
           loperson.Surname = "Gupta";
           lapeaople.Add(loperson);

           loperson = new Person();
           loperson.id = 105;
           loperson.Name = "Harish";
           loperson.Surname = "Verma";
           lapeaople.Add(loperson);

           loperson = new Person();
           loperson.id = 106;
           loperson.Name = "Lokesh";
           loperson.Surname = "Mor";
           lapeaople.Add(loperson);
           var data = lapeaople;

           return View(data );

       }

but i am getting error please help me

解决方案

It gives you error as you didn't assign model to grid, check these links:

http://weblogs.asp.net/scottgu/archive/2010/07/02/introducing-razor.aspx[^]
How to use grids in asp.net mvc 4 with razor engine[^]

you have return Ienumarable<loperson>

then it works fine.

and in your view
@model Ienumerable<irasoftwares.models.person>

if not working revert your coment.

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