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POGenerating Columns in GridView ( C#, LINQ )
 

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  1. POGenerating Columns in GridView ( C#, LINQ )
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    <p>The situation is, that i need to create table in grid view looking like this:</p> <p>----------| ID---|---Name--|--1/2002--|--2/2002--|--1/2003--|........| 2/2009 |<br> Cust1--|<br> Cust2--|<br> :<br> :<br> I have two tables in db - Customers and orders, throught LINQ to SQL DataContext<br> ID and Name of the customers i´m getting from a simple query</p> <pre><code>var custInfo = from cust in db.Customers select new { ID = cust.Id, FullName = cust.FirstName + " " + cust.LastName } dataGridOrdersPreview.DataSource = custInfo; </code></pre> <p>And i need some clue, how to generate that columns in format t/year where t indicates the first or second half of the year, and assign to that generated columns each Customer´s orders in that session of the year ( displaying only costs )</p> <p>[edit]</p> <p>As far as now, i´m attempting to something like this:</p> <pre><code>var orders = from ord in db.Orders group ord by ord.Id_cust into grouped let costs = grouped .Where( s =&gt; s.YearSession == session &amp;&amp; s.Year == year) .Select(a =&gt; new { Costs = a.Cost ) } ) select new { ID = grouped.Key, Name = custInfo .Where( a =&gt; a.ID == grouped.Key) .Select( j =&gt; j.Name).Single(), Cost = ExtensionLibrary.Sum(costs, "\n") }; </code></pre> <p>( in Cost getting only the summed costs in that year session for each customer )</p> <p>and then i think about iterating throuhgh the years and sessions and getting somehow the query results to corresponding columns</p> <pre><code>while (year &lt;= DateTime.Today.Year) { year++; while (session &lt; 2) { session++; dataGridOrdersPreview.Columns.Add(session +"/"+ year); col.Add((session +"/"+ year), orders.Select( a =&gt; a.Cost ).ToList() ); /* col is Dictionary&lt;string, List&lt;string&gt; &gt; */ } session = 0; } </code></pre> <p>Here i have generated columns that i want and i have orders in Dictionary where Key is column name and Value are orders in that column, but i need some help binding it to that columns</p>
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    1. USmirekys
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    1. COHow do you decide which years to show? Do you show every year that has an order in it, or a predefined amount, like 7 years worth?
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      1. POGenerating Columns in GridView ( C#, LINQ )
      1. USRobert Gowland
    2. COIt shows every year from 2002 to actual year and if there´s not order in it, it leaves the cell empty
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      1. USmirekys
 

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