[英]Is there a way for a getter to return specific dictionary entries<string, someClass> based on a list of strings?
In my WPF application i'm trying to retrieve only specific dictionary entries based on a list of keys that the user can edit.在我的 WPF 应用程序中,我试图根据用户可以编辑的键列表仅检索特定的字典条目。
I'm trying to go about this by having a List<string> ListOfKeys
that the user can modify, a Dictionary<string, AnObject> AllObjects
that contains a bunch of AnObjects with different variables, and a Dictionary<string, AnObject> SomeObjects
with a get{ }
containing a query to only return the entries from AllObjects
where the key in AllObjects
matches an entry in the ListOfKey
s.我试图通过具有去这个
List<string> ListOfKeys
用户可以修改,一个Dictionary<string, AnObject> AllObjects
包含了一堆不同的变量AnObjects的,和Dictionary<string, AnObject> SomeObjects
与一get{ }
包含查询只从返回的条目AllObjects
其中的关键AllObjects
匹配的条目ListOfKey
秒。
What do i put in the query to make this work?我在查询中输入什么来完成这项工作? Additionally, any suggestions for another way i should go about this?
此外,对我应该采取的另一种方式有什么建议吗?
XAML: XAML:
<ItemsControl ItemsSource="{Binding SomeObjects.Values}" Grid.Row="1">
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding someText}"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
C# C#
public class AClass
{
string someText;
int someNumber
[...] etc.
}
public Dictionary<string, AClass> AllObjects;
public List<string> ListOfKeys;
public Dictionary<string, AClass> SomeObjects
{
get
{
return AllObjects.Where(a key in AllObjects matches an entry in the ListOfKeys);
}
}
Returning to a list instead of a dictionary:返回列表而不是字典:
List<AClass> someObjects
get
{
return AllObjects.Where(x => ListOfKeys.Contains(x.Key)).Select(x => x.Value).toList();
}
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