checking for string that has a value in VB

I'm using ASP.NET Web Forms and VB.

I have this code

Dim strparam1 = "hello"
' if string is empty or null do what's inside if statement
If ( String.IsNullOrEmpty(strparam1) ) Then

End If

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What is the opposite of IsNullorEmpty?

I'm trying to set this logic on the if statment

If this variable strparam1 contains a value, which in this case it contains "hello" I want it to run what's inside the if statement.
If this variable strparam1 = "", then don't run what's inside the if statement.
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Use Not; e.g. -
Dim str As String = "hello"
If Not String.IsNullOrEmpty(str)
    ' I am doing something with a string that is not null or empty
    ' I am doing something with a string that is null or empty
End If

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Proof of concept -
Module Module1
	Sub Main()
		Dim strings = {Nothing, "Hello", ""}
		For Each value In strings
			If Not String.IsNullOrEmpty(value) Then
				Console.WriteLine($"Value is not null or empty; Contains - {value}")
				Console.WriteLine("Value is null or empty")
			End If
	End Sub
End Module

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Produces the following output -Capture.PNG-saige-

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