Which will better in passing only variable or a whole object in case of single parameter for a function

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In order to return a List, making four different functions call is better or only single Function call is better

i.e.
I want a List<> as return type from a function.
e.g. List<t> GetData()

I am using four different overloading to get the List<t> as
GetData(int a) //here need only x from T as return
GetData(int a, int b) //here need only x and y from T as return
GetData(int a, string c) //here need only y from T as return
GetData(string a) //here need only z from T as return

Also I can do like,

GetData(Type T)

Which is better to use? Sending particular variable as parameter or Type as a parameter? Why?

Posted 31-Aug-15 0:13am

durgeshtupkar10

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Sreekanth Mothukuru 31-Aug-15 6:48am

I feel writing a single generic method GetData(T t) to return List is the best way. What do you think?

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Sergey Alexandrovich Kryukov · Answer 1 · 2015-08-31T06:04:00

Solution 1

It just depends on your purpose, on how integral your set of parameters are. It also depends on how typical would be the reuse of the instance of this input data type (I mean, the cases when you create one instance and use it in several calls to GetData.

Only your code sample GetData(Type T) doesn't look relevant to your question, because the name "Type" suggests System.Type which should not be used like that. Instead of "Type", it should be your class or structure name, say "MyData". And with struct, it could be GetData(ref MyData data) (do I even have to explain why?)…

—SA

Posted 31-Aug-15 6:04am

Sergey Alexandrovich Kryukov

Updated 31-Aug-15 6:12am

v4

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durgeshtupkar10 10-Sep-15 3:49am

Thanks,

Another query is, in case of returning multiple fields from different tables in Linq query, is it good to use return type as object or should be used a new class containing those selected fields of Linq query?

Sergey Alexandrovich Kryukov 10-Sep-15 4:31am

What "another query"? You still did not accept this answer...
—SA

durgeshtupkar10 21-Jun-17 4:00am

accepted