{"id":22956,"date":"2022-11-22T16:51:33","date_gmt":"2022-11-22T11:21:33","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-assign-value-to-a-field-in-a-list-using-linq\/"},"modified":"2022-11-22T16:51:33","modified_gmt":"2022-11-22T11:21:33","slug":"solved-assign-value-to-a-field-in-a-list-using-linq","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-assign-value-to-a-field-in-a-list-using-linq\/","title":{"rendered":"[Solved] assign value to a field in a list using linq"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-39158835\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"39158835\" data-parentid=\"39158563\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Is this what you are looking for?<\/p>\n<pre><code>public class Worker \n{\n    public string Name {get;set;}\n    public string CompanyId {get;set;}\n    public string CompanyName {get;set;}\n}\n\npublic class Company\n{\n public string Name {get;set;}\n public string Id {get;set;}\n}\n\n\n   var companyList = new List&lt;Company&gt;\n    {\n        new Company{Id = \"1\", Name = \"Company 1\"},\n        new Company{Id = \"2\", Name = \"Company 2\"},\n        new Company{Id = \"3\", Name = \"Company 3\"}\n    };\n\n    var workerList = new List&lt;Worker&gt;\n    {\n        new Worker{ Name = \"Worker 1\", CompanyId = \"2\" },\n        new Worker{ Name = \"Worker 2\", CompanyId = \"1\" },\n        new Worker{ Name = \"Worker 3\", CompanyId = \"2\" },\n        new Worker{ Name = \"Worker 4\", CompanyId = \"3\" },\n        new Worker{ Name = \"Worker 5\", CompanyId = \"1\" }\n    };\n\nworkerList.ForEach(w =&gt; {\n            w.CompanyName = companyList.FirstOrDefault(c=&gt;c.Id == w.CompanyId)?.Name;\n        });\n\n\nforeach(var w in workerList)\n{\n    Console.WriteLine(w.Name+\"-\"+w.CompanyName);\n    \/\/ ==&gt; output will be\n    \/\/Worker 1-Company 2\n    \/\/Worker 2-Company 1\n    \/\/Worker 3-Company 2\n    \/\/Worker 4-Company 3\n    \/\/Worker 5-Company 1\n}\n<\/code><\/pre>\n<p>Or if the idea is to understand Join in Linq, then <\/p>\n<pre><code>var workers =   (from worker in workerList\n                join company in companyList\n                on worker.CompanyId equals company.Id\n                select new Worker \n                 {\n                    Name = worker.Name,\n                    CompanyId = worker.CompanyId,\n                    CompanyName = company.Name\n                 }).ToList();\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved assign value to a field in a list using linq <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Is this what you are looking for? public class Worker { public string Name {get;set;} public string CompanyId {get;set;} public string CompanyName {get;set;} } public class Company { public string Name {get;set;} public string Id {get;set;} } var companyList = new List&lt;Company&gt; { new Company{Id = &#8220;1&#8221;, Name = &#8220;Company 1&#8221;}, new Company{Id = &#8230; <a title=\"[Solved] assign value to a field in a list using linq\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-assign-value-to-a-field-in-a-list-using-linq\/\" aria-label=\"More on [Solved] assign value to a field in a list using linq\">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],"class_list":["post-22956","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-linq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] assign value to a field in a list 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-assign-value-to-a-field-in-a-list-using-linq\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] assign value to a field in a list using linq - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Is this what you are looking for? public class Worker { public string Name {get;set;} public string CompanyId {get;set;} public string CompanyName {get;set;} } public class Company { public string Name {get;set;} public string Id {get;set;} } var companyList = new List&lt;Company&gt; { new Company{Id = &quot;1&quot;, Name = &quot;Company 1&quot;}, new Company{Id = ... 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