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POsimplify my groupby
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  1. POsimplify my groupby
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    copied!<p>hi i would like to return the group data back to the ui layer.</p> <p>here is how i want to do a simplify the groupby "GenerationDate" and return the data in List&lt;> back to UI gridview. i find it very troublesome as i got to do the forloop. Also in the UI layer i got to do another forloop for this simple groupby. Could you help to simplify it? </p> <pre><code>public List&lt;SalaryTracker&gt; GetSalaryTrackerOrderByGenerationDate(int tutorId) { List&lt;SalaryTracker&gt; salary = new List&lt;SalaryTracker&gt;(); using (leDataContext db = new leDataContext()) { try { var r = from s in db.SalaryTrackers where s.StaffId == 2 &amp;&amp; s.PaymentDate == null group s by s.GenerationDate into g where g.Count() &gt; 0 select new { date = g.Key, totalSalary = g.Sum(p =&gt; p.SalaryAmount) }; foreach (var rr in r) { SalaryTracker m = new SalaryTracker(); m.GenerationDate = rr.date; m.SalaryAmount = rr.totalSalary; salary.Add(m); } return salary; } catch (Exception ex) { Logger.Error(typeof(SalaryTracker), ex.ToString()); throw; } } } </code></pre> <p>--------------- GUI</p> <pre><code>totalCommissionsGroup = salary.GetSalaryTrackerOrderByGenerationDate(tutor.Id); IList&lt;SalaryTracker&gt; rr = ( totalCommissionsGroup.GroupBy(x =&gt; x.GenerationDate) .Select(g =&gt; new SalaryTracker { MonthId = g.Key.Month, MonthToPay = common.GetMonthName(Convert.ToInt16(g.Key), true), SalaryAmount = g.Sum(x =&gt; x.SalaryAmount) })).ToList&lt;SalaryTracker&gt;(); gvSalaryPayment.DataSource = rr; </code></pre> <p>i do this so that i can get the MonthToPay in string</p>
 

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