C# 使用 linq 填充字典

populate a dictionary using linq

提问by Bick

I have the following empty Dictionary

我有以下空字典

Dictionary<Guid, string> appTypeMap = new Dictionary<Guid, string>();

and the following list:

以及以下列表：

List<ApplicationType> allApplicationTypes = _applicationTypeService.GetAll()

Application type is described as follows:

应用类型描述如下：

public class ApplicationType
{
   public Guid id {get; set;}
   public String name {get; set;}
}

I want to populate the dictionary using LINQ.
How do I do that? Thanks.

我想使用 LINQ 填充字典。
我怎么做？谢谢。

采纳答案by MarcinJuraszek

appTypeMap = allApplicationTypes.ToDictionary(x => x.id, x => x.name);

However, it will create a new dictionary, not fill yours.

但是，它会创建一个新字典，而不是填充您的字典。

回答by Mike C.

Try

尝试

appTypeMap = _applicationTypeService.GetAll().Select(o => new DictionaryEntry{
  Key = o.id,
  Value = o.name
}).ToList();

Not sure if you need a .ToList() on the end....

不确定最后是否需要 .ToList() ......