VB.Net/Database ADO.net/Database NULL

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System Null and DB NUll

<source lang="vbnet">

Public Class MainClass

  Public Shared Sub Main()
      "Strings
       Dim strConstant As String = "ABC"
       Dim strRepeat As New String("A"c, 20)
       Dim strMyString As String = "Hello World"
      strMyString = Nothing
       Dim sysNull As System.DBNull
       If strMyString Is sysNull Then
           strMyString = "Initialize my String"
       End If
       If Not IsDBNull(strMyString) Then
           Console.WriteLine(strMyString)
       End If
       
  End Sub

End Class


      </source>