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Hi all i am trying to Query from a table (_dtlayout) using the LINQ to SQL. I am trying to select a column name FK_DataPoint.
But when i Debug it out it is hitting that column numerous times. It does not throw any ERROR but for Performance wise it is a major issue. I know i am using a Where clause which goes to each rows and filters it. But is there a better way to put this code together in order to filter this DATAPOINT Column. Thank you .

C#
int? dataPointKey = _dtLayout.AsEnumerable().
    Where(row => row.Field<int?>("FK_FinancialStatementTemplateSectionItem") 
== colDef.FK_FinancialStatementTemplateSectionItem 
&& row.Field<int?>("RowNumber") == columnItem.RowNumber
&& row.Field<int?>("ColumnNumber") == colDef.ColumnNumber
&& row.Field<int?>("ItemNumber") == columnItem.ItemNumber)                                
.Select (row =>row.Field<int?>("FK_DataPoint")).FirstOrDefault();


Thanks
Posted
Updated 7-Aug-14 16:57pm
v5

1 solution

You are using a single query. U r using f11 key and so it is hitting many times if u use f10 it'll execute with in a fraction of seconds.So there will be no bigger performance issue.
 
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Comments
Strikerzz Arut 12-Aug-14 3:37am    
FirstorDefault will be returning a single value.I think you will be calling this functionality indefinite times or else u'll be looping around it several times.

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