[英]ASP.NET MVC - create drop down list for a model that has composite primary key?
I'm trying to allow for selecting an item from list of items. 我试图允许从项目列表中选择一个项目。 The problem is that each item has a composite key, and if I use a drop down list, the value for each item is expected to be a string (but I need two strings for the composite key). 问题在于每个项目都有一个组合键,如果我使用下拉列表,则每个项目的值都应该是一个字符串(但是我需要两个字符串来用作组合键)。
Right now, I've hacked it to combine the composite key into one string with a delimiting character in between when setting the list, and then parsing the value expecting the delimiting character when something is selected. 现在,我已经破解了它,可以在设置列表时将复合键组合为一个字符串,并在其中包含定界字符,然后在选择某些内容时解析期望包含定界字符的值。 Is there a cleaner/better way of achieving this? 有没有更清洁/更好的方法来实现这一目标? Obviously my current approach can fail if one of the keys already is using the same character. 显然,如果其中一个键已在使用相同字符,则我当前的方法可能会失败。
Model: 模型:
public class CompositeKeyModel
{
[Key]
public string Name { get; set; }
[Key]
public string Group { get; set; }
}
How about you create a get
property to get the Value of the Property to retrive the composite Key 您如何创建一个get
属性以获取该属性的值以检索组合键
public class CompositeKeyModel
{
[Key]
public string Name { get; set; }
[Key]
public string Group { get; set; }
public string CompositeKey {get
{
return Name+Group
}}
}
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