"Object reference not set to an instance of an object?"

2018-06-09 08:16:30

This question already has an answer here:

What is a NullReferenceException, and how do I fix it? 33 answers

You need to create a new instance of the form you want to display. You do this by creating a variable of form T and then showing it.

If you don't create an instance of your form the MainForm.Show() code will be invoking Show() on an null reference.

If PasswordTextBox.Text = pass Then
    Me.Hide()
    Dim theFormIWantToShow As New MainForm
    theFormIWantToShow.Show()
End If

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