IEnumerable <KeyValuePair>返回类型问题

Question

我正在研究linq方法,似乎无法获得与方法签名匹配的返回类型.任何指导都将非常感谢.

谢谢!

private static IEnumerable<KeyValuePair<string, string>> RunQuery(XDocument doc)
{
    var data = from b in doc.Descendants("Company")
               where b.Attribute("name").Value == "CompanyA"
               from y in b.Descendants("Shirt")
               from z in y.Descendants("Size")
               select new
               {
                   color = y.Attribute("id").Value,
                   price = z.Value
               };

    return data;
}

Answer 1

你必须创建KeyValuePairs.

...
select new KeyValuePair(y.Attribute("id").Value, z.Value)