{"id":20480,"date":"2022-11-09T19:58:23","date_gmt":"2022-11-09T14:28:23","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-return-list-of-custom-class-using-linq\/"},"modified":"2022-11-09T19:58:23","modified_gmt":"2022-11-09T14:28:23","slug":"solved-return-list-of-custom-class-using-linq","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-return-list-of-custom-class-using-linq\/","title":{"rendered":"[Solved] Return list of custom class using Linq"},"content":{"rendered":"

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If you want to have separate method in the Author<\/code> class like you asked in the question, it could look like:<\/p>\n

public class Author\n{\n    public Author()\n    { }\n\n    public int _AuthorID { get; set; }\n    public string _AuthorName { get; set; }\n    public List<Paper> _Papers { get; set; }\n\n    public bool HasPapersForYear(int year)\n    {\n        return _Papers.Any(_paper => _paper._Year == year);\n    }\n\n    public bool HasPapersForYears(int startYear, int endYear)\n    {\n        return _Papers.Any(_paper => _paper._Year >= startYear && _paper._Year <= endYear);\n    }\n}\n<\/code><\/pre>\n
And old methods are changed:<\/p>\n
public List<Author> GetAuthorsByYear(List<Author> _fullList, int _year)\n{\n    return _fullList.Where(_author => _author.HasPapersForYear(_year)).ToList();\n}\n\npublic List<Author> GetAuthorsBetweenYears(List<Author> _fullList, int _startYear, int _endYear)\n{\n    return _fullList.Where(_author => _author.HasPapersForYears(_startYear,_endYear)).ToList();\n} \n<\/code><\/pre>\n
Also about the part of Venue and CoAuthors <\/p>\n
    public List<int> GetCoAuthorsByYear(int _year)\n    {\n        var coAuthors = new List<int>();\n        foreach(var paper in _Papers.Where(_paper => _paper._Year == _year))\n        {\n            coAuthors.AddRange(paper._CoAuthors);\n        }\n        return coAuthors;\n    }\n    public List<int> GetCoAuthorsBetweenYears(int _startYear, int _endYear)\n    {\n        var coAuthors = new List<int>();\n        foreach(var paper in _Papers.Where(_paper => _paper._Year >= _startYear && _paper._Year <= _endYear))\n        {\n            coAuthors.AddRange(paper._CoAuthors);\n        }\n        return coAuthors;\n    }\n\n    public List<int> GetVenuesByYear(int _year)\n    {\n        var venues = new List<int>();\n        foreach(var paper in _Papers.Where(_paper => _paper._Year == _year))\n        {\n            venues.Add(paper._VenueID);\n        }\n        return venues;\n    }\n    public List<int> GetVenuesBetweenYears(int _startYear, int _endYear)\n    {\n        var venues = new List<int>();\n        foreach(var paper in _Papers.Where(_paper => _paper._Year >= _startYear && _paper._Year <= _endYear))\n        {\n            venues.Add(paper._VenueID);\n        }\n        return venues;\n    }       \n<\/code><\/pre>\n
This code could be refactored sure.<\/p>\n<\/p><\/div>\n
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            5<\/span> <\/p><\/div>\n<\/div>\n
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solved Return list of custom class using Linq <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] If you want to have separate method in the Author class like you asked in the question, it could look like: public class Author { public Author() { } public int _AuthorID { get; set; } public string _AuthorName { get; set; } public List<Paper> _Papers { get; set; } public bool HasPapersForYear(int year) … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,578,540,1818,3395],"class_list":["post-20480","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-linq","tag-list","tag-return","tag-user-defined-types"],"yoast_head":"\n[Solved] Return list of custom class using Linq - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-return-list-of-custom-class-using-linq\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Return list of custom class using Linq - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If you want to have separate method in the Author class like you asked in the question, it could look like: public class Author { public Author() { } public int _AuthorID { get; set; } public string _AuthorName { get; set; } public List<Paper> _Papers { get; set; } public bool HasPapersForYear(int year) ... 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