本文介绍了Lambda表达式选择的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
你好! 我有这个lambda表达式 .Select(res => new {res.YEAR,res.Week,res.Number}); 如何将res.YEAR,res.Week合并为lambda表达式中的一个字符串? 我也想在Year上做一个子字符串,这可能吗?
Hello! I have this lambda expression .Select(res => new {res.YEAR, res.Week, res.Number}); How can i combine res.YEAR, res.Week into one string in a lambda expression? I also want to do a substring on the Year, is this possible? Thanks!
推荐答案嗨! 是的,那是所有可能的.在示例中使用匿名类: Hi! Yes, that is all possible. Using an anonymous class as in your example: .Select(res => new { Combination = res.Week + res.Year, Substring = res.Year.Substring(0, 2) });
或者,如果您想要一个简单的字符串列表:
Or if you want a simple list of strings:
.Select(res => res.Year.Substring(0, 2))或
or
.Select(res => res.Week + ", " + res.Year)
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Lambda表达式选择
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