Retrieve rows, return only user selected columns from the list

I need to retrieve columns which will be decided by user at run-time. Lets assume EmpTable > EmpID, EmpName, EmpDesignation

All column will be listed in list. And then User will be select the col开发者_开发问答umn which he wanna to be export.

Can we achieve using Linq? Any help would be greatly appreciated.

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String myQuery = "select "; 

// build your query with selected items
var result = datacontext.ExecuteQuery(myQuery);