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VB.Net program to select specified fields using All() LINQ extension method

Here, we are going to learn how to select specified fields using All() LINQ extension method in VB.Net?
Submitted by Nidhi, on January 26, 2021 [Last updated : March 08, 2023]

VB.Net – Selecting specified fields using All()

In this program, we will All() LINQ extension method to check all employees age is greater than 22 or not and then print the appropriate message on the console screen.

Program/Source Code:

The source code to select specified fields using the All() LINQ Extension method is given below. The given program is compiled and executed successfully.

VB.Net code to select specified fields using All() LINQ extension method

'VB.NET program to demonstrate the 
'LINQ All() extension method.

Imports System
Imports System.IO
Imports System.Linq

Module Module1
    Public Class Employee
        Public id As Integer
        Public name As String
        Public age As Integer
    End Class

    Sub Main()
        Dim empList = New List(Of Employee) From
        {
            New Employee() With {.id = 101, .name = "Amit", .age = 21},
            New Employee() With {.id = 102, .name = "Arun", .age = 22},
            New Employee() With {.id = 103, .name = "Aman", .age = 23},
            New Employee() With {.id = 104, .name = "Amar", .age = 21},
            New Employee() With {.id = 105, .name = "Akki", .age = 22},
            New Employee() With {.id = 105, .name = "Anuj", .age = 23}
        }

        Dim result As Boolean = empList.All(Function(e) e.age > 22)

        If (result = True) Then
            Console.WriteLine("All employees age is greater than 22")
        Else
            Console.WriteLine("All employees age is not greater than 22")
        End If
    End Sub
End Module

Output

All employees age is not greater than 22
Press any key to continue . . .

Explanation

In the above program, we created a module Module1 that contains the Employee class and Main() function. The Employee class contains three data members id, name, and age.

The Main() function is the entry point for the program. In the Main() function we created the list of employees. Here, we checked the cage of all employees that are greater than 22 or not, and then print the appropriate message on the console screen.

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