There seems to be big difference between your first GetSortedEmployees function and your last one, the one that takes Lamda Expression as an argument. The problem with the last one, you can’t simply pass in a string columnname and simply do the sort. for example.

if my function was simply sending in columnname as string:

Function GetEmployees(sortBy as String) as List(Of Employees)

‘I would have to do a select case to use your lamda expression function

SELECT CASE sortBy

case “CreatedDate”

return GetSortedEmployees(Of Employee)(Function(e) e.CreatedDate).ToList()

Case “Name”

return GetSortedEmployees(Of Employee)(Function(e) e.Name).ToList()

End Select

End Function

So, your last function altough simple, isnt truely dynamic. I am wondering if there is a way to write the last function so that it takes sortby columnname as string and returns a sorted iQueryable.

Thanks.

Dhaval

I will send you the sample project shortly.

Levi

Make sure that you have reference to System.Data.Linq

and following using statements other than the ones in a standard Windows Forms application (I used Win Forms app as my test harness)

System.Linq
System.Linq.Expressions

For some reason I can’t get this to compile. Could you tell me what DLL references and namespaces I should be using? I think i may be missing one but can’t seem to figure out which one.

Thanks!
Levi

You are trying to access GetSortedEmployees method from a static method. You can either make GetSortedEmployees a static method or move your data access code to another class and call the method on an instance of that class.

If this does not help you then post some code and I’ll have a look.

When i call GetSortedEmployees(x=>x.Title),i’m getting an error like ” cannot access non-static method ‘GetSortedEmployees’ in static context”.How can i get rid of this problem?

Thx.

Thanks for kind words.