{"id":23207,"date":"2022-11-24T14:43:03","date_gmt":"2022-11-24T09:13:03","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\/"},"modified":"2022-11-24T14:43:03","modified_gmt":"2022-11-24T09:13:03","slug":"solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\/","title":{"rendered":"[Solved] Get Records count of specified date-range from database, if no record present for one of the date then return count as ‘0’"},"content":{"rendered":"

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You should create some dummy data to fill in the gaps. Since you’re doing a Sum<\/code>, you can just create some dummies of your input data.<\/p>\n

To do so, I’ve assumed that Set<\/code> is List<SourceData><\/code> – change this as necessary:<\/p>\n

public class SourceData\n{\n    public DateTime Date { get; set; }\n    public long TotalHours { get; set; }\n}\n\npublic class GraphData\n{\n    public DateTime Date { get; set; }\n    public long TotalHoursCount { get; set; }\n}\n<\/code><\/pre>\n
I’ve then added a method to get a date range (upper bound exclusive):<\/p>\n
public static IEnumerable<DateTime> GetDateRange(DateTime startDate, DateTime endDate)\n{\n    return Enumerable.Range(0, (endDate - startDate).Days).Select(d => startDate.AddDays(d));\n}\n<\/code><\/pre>\n
Finally, I’ve updated your GetDataWiseUsage method to generate the date range and convert it into dummy source data:<\/p>\n
public static List<GraphData> GetDateWiseUsage(DateTime startDate, DateTime endDate)\n{\n    return Set.Where(x => x.Date >= startDate.Date && x.Date < endDate.Date)\n    .Concat(GetDateRange(startDate, endDate).Select(date => new SourceData() { Date = date, TotalHours = 0 }))\n    .GroupBy(x => x.Date.Date)\n    .Select(x => new GraphData { Date = x.Key, TotalHoursCount = x.Sum(i => i.TotalHours) }).ToList();\n}\n<\/code><\/pre>\n
I’ve changed your code to group by x.Date.Date<\/code> rather than x.Date<\/code>, as it seems that you want a separate grouping per day, rather than per unique time. The group by will not group the dummy data with the real data, and factor it into the sum.<\/p>\n
You could<\/em> add the dummy data afterwards<\/em> but it seems easier\/less work to do it beforehand.<\/p>\n<\/p><\/div>\n
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solved Get Records count of specified date-range from database, if no record present for one of the date then return count as ‘0’ <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] You should create some dummy data to fill in the gaps. Since you’re doing a Sum, you can just create some dummies of your input data. To do so, I’ve assumed that Set is List<SourceData> – change this as necessary: public class SourceData { public DateTime Date { get; set; } public long TotalHours … 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":[324,433,578],"class_list":["post-23207","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-date","tag-linq"],"yoast_head":"\n[Solved] Get Records count of specified date-range from database, if no record present for one of the date then return count as '0' - 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-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Get Records count of specified date-range from database, if no record present for one of the date then return count as '0' - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] You should create some dummy data to fill in the gaps. Since you’re doing a Sum, you can just create some dummies of your input data. To do so, I’ve assumed that Set is List<SourceData> – change this as necessary: public class SourceData { public DateTime Date { get; set; } public long TotalHours ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-11-24T09:13:03+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\\\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#\\\/schema\\\/person\\\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] Get Records count of specified date-range from database, if no record present for one of the date then return count as ‘0’\",\"datePublished\":\"2022-11-24T09:13:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\\\/\"},\"wordCount\":180,\"publisher\":{\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/#organization\"},\"keywords\":[\"c++\",\"date\",\"linq\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\\\/\",\"url\":\"https:\\\/\\\/jassweb.com\\\/solved\\\/solved-get-records-count-of-specified-date-range-from-database-if-no-record-present-for-one-of-the-date-then-return-count-as-0\\\/\",\"name\":\"[Solved] Get Records count of specified date-range from database, if no record present for one of the date then return count as '0' - 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Since you’re doing a Sum, you can just create some dummies of your input data. To do so, I’ve assumed that Set is List<SourceData> – change this as necessary: public class SourceData { public DateTime Date { get; set; } public long TotalHours ... 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