XML 使用 Linq To XML 到字典

Question

好吧，我在这个简单的事情上迷路了。我想把这个 xml 转换成一个字典，基本上是这样的：

var xml = "<root><Hello>World</Hello><Foo>Bar</Foo></root>";
var doc = XDocument.Parse(xml);
var dic = new Dictionary<string, string>();
foreach (var elem in doc.Root.Elements())
{
    dic[elem.Name.LocalName] = elem.Value;
}

但是我想用ToDictionary，所以我这样写：

var dic = doc.Root.Elements().ToDictionary<string, string>(e => e.Name.LocalName, e => e.Value);

但是编译不通过！我收到这些错误

Error 1 Instance argument: cannot convert from 'System.Collections.Generic.IEnumerable' to 'System.Collections.Generic.IEnumerable' Program.cs 65 22
Error 2 'System.Collections.Generic.IEnumerable' does not contain a definition for 'ToDictionary' and the best extension method overload 'System.Linq.Enumerable.ToDictionary(System.Collections.Generic.IEnumerable, System.Func, System.Collections.Generic.IEqualityComparer)' has some invalid arguments Program.cs 65 22 Error 3 Argument 2: cannot convert from 'lambda expression' to 'System.Func' Program.cs 65 71
Error 4 Argument 3: cannot convert from 'lambda expression' to 'System.Collections.Generic.IEqualityComparer' Program.cs 65 94

Answer 1

这个

var dic = doc.Root.Elements().ToDictionary<string, string>(e => e.Name.LocalName, e => e.Value);

应该是这样的：

var dic = doc.Root.Elements().ToDictionary(e => e.Name.LocalName, e => e.Value);

您不必声明键的类型和值的类型。有关这方面的更多文档，请查看 here。

XML 使用 Linq To XML 到字典

XML to Dictionary using Linq To XML

c#

linq

linq-to-xml