Pur*_*ome 1 .net c# linq .net-4.0
我正在尝试从单词列表中找到所有与名称相等的标签.
例如 :-
public class Tag
{
public int Id { get; set; }
public string Name { get; set; }
public string UserId { get; set; }
}
// Arrange.
var searchWords = new List<string>(new [] {"c#", ".net", "rails"});
var tags = new Tags
{
new Tag { Name = "c#" },
new Tag { Name = "pewpew" },
new Tag { Name = "linq" },
new Tag { Name = "iis" }
};
// Act.
// Grab all the tags given the following search words => 'c#' '.net' and 'rails'
// Expected: 1 result.
var results = ???
// Assert.
Assert.NotNull(results);
Assert.Equal(1, results.Count);
Assert.Equal("c#", results.First());
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我一直在尝试使用Any或Contains但我的代码只是不编译.
注意:可以是.NET 4.0
这对你有用吗?
var results = tags.Where(t =>
searchWords.Contains(t.Name, StringComparer.InvariantCultureIgnoreCase));
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还要注意,由于results是IEnumerable<T>你需要使用的方法results.Count(),而不是财产results.Count在你的断言. Count是由ICollection接口定义的属性.