Why do `select` and` sub` have parentheses around them in VB Linq expressions?

Question

I converted the following query from C #:

src.Select((c, i) => src.Substring(i)).Count(sub => sub.StartsWith(target)) 

in the VB.NET request:

 src.[Select](Function(c, i) src.Substring(i)).Count(Function([sub]) [sub].StartsWith(target)) 

Using Developer Fusion . I'm just wondering why the version of VB.NET has [] everywhere.

Answer 1

select and sub are keywords in VB.NET

Answer 2

Sub and Select are keywords in VB.NET, so you must mark them in order to use them as variable names — generally using keywords, since variable names should be avoided — just rename them and you can get rid of curly braces.

Answer 3

The reason that both Select and Sub are reserved words in VB.Net. The environment [] surrounding them is an acceleration mechanism that causes them not to be treated as keywords

Answer 4

Little dot: .Select does not need parentheses:

 src.Select(Function(c, i) src.Substring(i)).Count(Function([sub]) [sub].StartsWith(target)) 

works great.