Question

very simple question, how to combine and or operators into the same statement.

c.GetType is getType(TextBox) AND foo or bar or baz

this is not working

For Each c As Control In Me.Controls
    If (c.GetType Is GetType(TextBox)) And ((c.Name <> "txtID") Or (c.Name <> "txtAltEmail")) Then
        'do something
    End If
Next

this works:

For Each c As Control In Me.Controls
    If (c.GetType Is GetType(TextBox)) And (c.Name <> "txtID") Then
        'do something
    End If
Next

thanks, I’m a .net newbie!

Answer 1

By the way, you can use LINQ which improves the intelligibility.:

Dim allTextBoxes = From txt In Me.Controls.OfType(Of TextBox)()
                  Where txt.Name <> "txtID" AndAlso txt.Name <> "txtAltEmail"
For Each txt In allTextBoxes
    ' do something with the TextBox '
Next

• OfType returns only the controls of the given type, in this case TextBoxes
• Where filters the controls by the Name property (note: And and AndAlso difference)
• the For Each iterates the resulting IEnumerable(Of TextBox)