[英]How can I make this C# class and method static?
I am a new ASP.NET developer and I am trying to learn Linq-To-Entities. 我是一名新的ASP.NET开发人员,我正在尝试学习Linq-To-Entities。 I am trying to create a static class called Items in my Data Access Layer. 我正在尝试在我的数据访问层中创建一个名为Items的静态类。 This class has a method to retrieve all the records in Items Entity. 此类有一个方法来检索Items Entity中的所有记录。 And then, I will use it for binding the GridView to it. 然后,我将使用它将GridView绑定到它。 The problem is that I got the following error in my getData() method when I make that class as a static class and I don't know why: 问题是当我将该类作为静态类并且我不知道原因时,我在getData()方法中遇到以下错误:
C# Code: C#代码:
public static class Items
{
//properties
public int ID { get; set; }
public string Code { get; set; }
public int ItemTypeID { get; set; }
public string Name { get; set; }
public int StatusID { get; set; }
public static IEnumerable<Items> getData()
{
List<Items> itemsList = new List<Items>();
using (ItemsDBEntities context = new ItemsDBEntities())
{
itemsList = (from item in context.Items
select new Items()
{
ID = item.ID,
Code = item.Code,
Name = item.Name,
StatusID = item.StatusID
}).ToList();
}
return itemsList;
}
Could you please tell me how to fix this error? 你能告诉我如何解决这个错误吗?
Could you please tell me how to fix this error? 你能告诉我如何解决这个错误吗?
//public static class Items
public class Items
{
}
There are clear reasons why Items
should not be static
. Items
不应该是static
有明显的原因。
The getData()
method can remain static, although that doesn't seem necessary or useful either. getData()
方法可以保持静态,尽管这似乎不是必需或有用的。 It just makes testing a little harder. 它只是让测试变得更难。 Do research state-management and the use of static in ASP.NET. 在ASP.NET中研究状态管理和静态的使用。
Id
and Name
properties is an Item
, not an Items
. 具有Id
和Name
属性的任何内容都是Item
,而不是Items
。 GetData()
. 在C#中我们使用方法GetData()
。 只需删除Items类的静态声明即可。
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