Vb Core

Visual Basic .NET Core Patterns

Modern VB.NET (2019+) best practices with focus on type safety, LINQ, async/await, and .NET integration.

Quick Start

' Always enable strict type checking
Option Strict On
Option Explicit On
Option Infer On

' Modern class definition
Public Class Customer
    Public Property Id As Integer
    Public Property Name As String
    Public Property Email As String

    ' Constructor
    Public Sub New(id As Integer, name As String, email As String)
        Me.Id = id
        Me.Name = name
        Me.Email = email
    End Sub
End Class

' Modern async method
Public Async Function GetCustomerAsync(id As Integer) As Task(Of Customer)
    Dim result = Await database.QueryAsync(Of Customer)(
        "SELECT * FROM Customers WHERE Id = @id",
        New With {.id = id}
    )
    Return result.FirstOrDefault()
End Function

' LINQ query
Dim activeCustomers = From c In customers
                      Where c.IsActive AndAlso c.Balance > 0
                      Order By c.Name
                      Select c

Type Safety (Critical)

Option Strict On

' ALWAYS at top of every file
Option Strict On
Option Explicit On
Option Infer On