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POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
 

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  1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
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    <p>I have the following code. For every item in <code>objViewForecastTrendYear2</code>, I'm creating creating <code>DicGridRow</code> dictionary object. I add some properties dynamically along with some static properties in <code>DicGridRow</code> dictionary. At the end I am adding that item in <code>List</code> of <code>Dictionary EntireViewModel</code>. Once I come out of outer loop ,i have <code>List&lt;Dictionary&gt; EntireViewModel</code>.</p> <p>This list contains some record and i want to apply group by and sum using linq on this <code>EntireViewModel</code>, but I don't know how to do that. Here <code>objViewForecastTrendYear2</code> is list object which contain all static properties.</p> <p>Overall scenario is <code>EntireViewModel =( A(static properties)+B(Dynamic properties))</code> for every item in <code>objViewForecastTrendYear2</code>.</p> <p>I want to apply group by on all ID field like UOM_ID and remaining fields in sum operation of Linq on <code>EntireViewModel</code>. My EntireViewModel look like -> <img src="https://i.stack.imgur.com/FGMXc.png" alt="enter image description here"></p> <pre><code>List&lt;Dictionary&lt;string, object&gt;&gt; EntireViewModel = new List&lt;Dictionary&lt;string, object&gt;&gt;(); foreach (var A in objViewForecastTrendYear2) { DynamicColName = new string[NoOfHistoryColumn]; int HistoryCol = RightHistoryColumn; Dictionary&lt;string, object&gt; DicGridRow = new Dictionary&lt;string, object&gt;(); DicGridRow.Add("COMPANY_ID", A.COMPANY_ID); DicGridRow.Add("CUSTOMER_ID", A.CUSTOMER_ID); DicGridRow.Add("FINAL_FORECAST", A.FINAL_FORECAST); DicGridRow.Add("FINANCIAL_YEAR", A.FINANCIAL_YEAR); DicGridRow.Add("FORECAST_MONTH", A.FORECAST_MONTH); DicGridRow.Add("FORECAST_PARAMETERS_ID", A.FORECAST_PARAMETERS_ID); DicGridRow.Add("MARKET_PLANNER", A.MARKET_PLANNER); DicGridRow.Add("PROD_GRADE_ID", A.PROD_GRADE_ID); DicGridRow.Add("PROD_ID", A.PROD_ID); // DicGridRow.Add("SALES_LAST_YEAR", A.SALES_LAST_YEAR); DicGridRow.Add("STATISTICAL_FORECAST", A.STATISTICAL_FORECAST); DicGridRow.Add("STOCK_POINT_ID", A.STOCK_POINT_ID); DicGridRow.Add("TREND_ID", A.TREND_ID); DicGridRow.Add("UOM_ID", A.UOM_ID); DicGridRow.Add("VERSION_NO", A.VERSION_NO); DicGridRow.Add("CUSTOMER_FORECAST",A.CUSTOMER_FORECAST); // Dynamic columns goes as follows for (int i = 0; i &lt; NoOfHistoryColumn; i++) { string strColumnName = Convert.ToString(HistoryCol--); DynamicColName[i] = strColumnName; //Dictionary&lt;string, object&gt; DicGridRow = new Dictionary&lt;string, object&gt;(); DicGridRow.Add(strColumnName, A.SALES_LAST_YEAR); } EntireViewModel.Add(DicGridRow); } </code></pre> <p><em>As you can see my <code>List</code> is of <code>dictionary&lt;string, object&gt;</code> object Now the grouping of List has to be done based upon 2 or more keys of dictionary as we do in SQL databases (ex. PL-SQL).</em></p>
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    1. PTQuestion
    1. USDiv Tiwari
    1. USGaurav Dhavale
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
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      1. VTDownMod
    3. VO
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
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    1. COYou've described what you want, but not what you're having problems with. What is the actual problem?
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
      1. USJoachim Isaksson
    2. COWhat do you want to group by?
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
      1. USMartin Davies
    3. COErm sum what from what?
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      1. POHow to perform Linq`s group by and sum operation on List<Dictionary<string, object>>
      1. USTony Hopkinson
 

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