Lamba Expression to invoke a Method

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Hi,
I have a List<data> which i am trying to loop and pass it to some function.

C#

IEnumerable<EntityObject> Data  = entity.get();
LstAll = new Employee(); 
foreach (EntityObject o in Data)
{
  Employee e = new Employee();
  DeleteData(0,e);
  LstAll.Add(e);
}

now i want to use lamba expression so that i can remove the Foreach loop and call the DeleteData.

C#

LstAll.Add(from o in Data  
           let c = DeleteData(o,Employee e));

This code is giving me error.
Any suggestion Plz help.

[Edit: Code block added]

Posted 25-Apr-13 20:00pm

rohit24c

Updated 27-Apr-13 22:52pm

Thomas Daniels

v3

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Pheonyx 26-Apr-13 5:45am

What is the error?

rohit24c 26-Apr-13 6:26am

its syntactically wrong.

3 solutions

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Pheonyx · Answer 1 · 2013-04-26T00:38:00

Solution 1

The solution here:
Linq Query - Call Method.[^]

might solve your issue.

Posted 26-Apr-13 0:38am

Pheonyx

HM India · Answer 2 · 2013-04-27T22:49:00

Solution 2

You have 2 operations to perform, fill list and delete record, both cannot be done.

Posted 27-Apr-13 22:49pm

HM India

Andreas Gieriet · Answer 3 · 2013-04-27T23:59:00

Each Linq expression must have a select.

C#

from ... in ... select ...;

Your example data is incomplete or maybe wrong. You talk about List<data> but this is nowhere visible in your code.
Your LstAll seems to be a list (you call Add(...) in the loop), but initialization is by a single element (new Employee() is not likely to be a list, right?).

Please revise your question and carefully check the code in the question so it exactly matches what you have in your homework assignment.

Cheers
Andi

PS: What does DeleteData(...) doing? If it removes some item from the list it loops over, the program is broken.
PPS: If the problem is to add a range of elements to a list, then use the AddRange(...) method.
PPPS: Is this a typo or don't you understand where to use/don't use type names (see ~~Employee~~):

C#

LstAll.AddRange(from o in Data let c = DeleteData(o,Employee e) ... select ...);

or is it rather the following?

C#

LstAll.AddRange(from o in Data let c = DeleteData(o, new Employee()) ... select ...);