How to write a VB.Net Lambda expression

Question

I am working on a VB.net project now. I am new to VB.Net LINQ and would like to know the Lambda equivalent of

var _new = orders.Select(x => x.items > 0);

in VB.Net.

Someone please suggest!

Solution

The lambda syntax isn't that much different than creating a regular delegate.

If creating a lambda which has a return value, use Function. Otherwise if you're creating one that doesn't, use Sub.

Dim _new = orders.Select(Function(x) x.Items > 0)

Dim action As Action(Of Item) = Sub(x) Console.WriteLine(x.Items)

Comments

[Satpal]

msdn.microsoft.com/en-us/library/bb531253.aspx

[Leszek P]

msdn.microsoft.com/en-us/library/…

[Paolo Moretti]

It looks different from a standard delegate, since in this case there is no return statement, and the value returned is the value of the expression in the body of the delegate.

[Jeff Mercado]

I had always thought that the delegate in VB.net had an optional Return statement.