运行时绑定程序异常由usercode支持 [英] Runtime Binder Exception was ubhandeled by usercode
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问题描述
我使用控制器,模型,视图开发了一个MVC应用程序
控制器使用viewbag准备数据并重定向到查看。
型号:(Data.cs)
i was developed one MVC appication using controller,Model,View
controller prepares data using viewbag and redirected to view.
Model:(Data.cs)
<br />
<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Linq;<br />
using System.Web;<br />
<br />
namespace model.Models<br />
{<br />
public class data<br />
{<br />
public int Number { get; set; }<br />
public string Name { get; set; }<br />
public string Grade { get; set; }<br />
}<br />
}<br />
<br />
控制器:( studentController)
Controller:(studentController)
<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Linq;<br />
using System.Web;<br />
using System.Web.Mvc;<br />
using model.Models;<br />
<br />
namespace model.Controllers<br />
{<br />
public class studentController : Controller<br />
{<br />
//<br />
// GET: /student/<br />
public ViewResult register()<br />
{<br />
List<string> s1 = new List<string>();<br />
data d1 = new data() { Number = 1, Name = "varma", Grade = "A" };<br />
data d2 = new data() { Number = 2, Name = "kumar", Grade = "c" };<br />
data d3 = new data() { Number = 3, Name = "vasu", Grade = "B" };<br />
s1.Add("d1");<br />
s1.Add("d2");<br />
s1.Add("d3");<br />
ViewBag.Udata = s1;<br />
return View();<br />
}<br />
<br />
public ActionResult Index()<br />
{<br />
return View();<br />
}<br />
<br />
}<br />
}<br />
<br />
查看:(register.cshtml):
view:(register.cshtml):
<br />
<br />
@{<br />
ViewBag.Title = "register";<br />
}<br />
<br />
<h2>register</h2><br />
<br />
@foreach (var item in ViewBag.Udata)<br />
{<br />
<ul>@item.Name.....@item.Grade</ul><br />
}<br />
<br />
每当运行该任务时会出现一个错误
错误将在一行中提高该行是
whenever run that task one error will raise
error will be raising in one line that line is
<br />
<ul>@item.Name.....@item.Grade</ul><br />
错误是字符串不包含名称的定义
这是运行时异常。
请帮帮我。谢谢你
error is" string does not contain definition for name"
this is runtime exception.
please help me.Thank u
推荐答案
你已经创建了一个字符串列表。然后,您创建了三个数据对象,将它们抛弃,然后将本地变量的名称作为字符串添加到列表中。
因此,ViewBag.UData
属性包含字符串<的列表
对象以及foreach
循环中的item
变量是串
。由于字符串
类型不包含名为名称
或等级$ c $的属性c>,你得到一个编译器错误。
改变你的代码来传递一个数据
对象的列表:
You've created a list of strings. You've then created three data objects, thrown them away, and then added the names of the local variables as strings to your list.
As a result, theViewBag.UData
property contains a list ofstring
objects, and theitem
variable in yourforeach
loop is astring
. Since thestring
type doesn't contain properties calledName
orGrade
, you get a compiler error.
Change your code to pass a list ofdata
objects instead:
public ViewResult register()
{
List<data> s1 = new List<data>();
data d1 = new data() { Number = 1, Name = "varma", Grade = "A" };
data d2 = new data() { Number = 2, Name = "kumar", Grade = "c" };
data d3 = new data() { Number = 3, Name = "vasu", Grade = "B" };
s1.Add(d1);
s1.Add(d2);
s1.Add(d3);
ViewBag.Udata = s1;
return View();
}
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