Checking the Tags of each TextBox in an array

Question

How do I check the Tag property of all the TextBox controls in an array?
I want something like this:

If textBox.Tag And textbox2.Tag And textbox21.Tag And
   textbox22.Tag And textbox23.Tag And textbox24.Tag = "2" Then

This is my array of TextBoxes:

Dim allTextboxes() As TextBox = {textBox, narNaslov, narPersona, narDani, narPersona2,
                                 kupIme, kupAdresa, kupKontakt, uvBroj, uvDatum, uvIznos,
                                 uvAvans, uvRok, uvNacin, datumTbox} 

Answer 1

You can use the LINQ All()-Method

If allTextBoxes.All(Function(t) t.Tag.ToString = "2") Then
    'All Tags are "2"
End If

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To avoid a NullReferenceException, if one of the textboxes is Nothing you can add an additional check:

If allTextBoxes.All(Function(t) t IsNot Nothing AndAlso t.Tag.ToString = "2") Then
    'All Tags are "2"
End If

Or you can use the Null-conditional operator (Visual Basic v. 14 or greater)

If allTextBoxes.All(Function(t) t?.Tag.ToString = "2") Then
    'All Tags are "2"
End If