Visual Basic

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Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
        Dim FileName As String = Application.StartupPath + "\Config\conString.txt"
        Dim TextLine As String = String.Empty
 
        If System.IO.File.Exists(FileName) = True Then
            Dim ObjectReader As New System.IO.StreamReader(FileName)
 
            Do While ObjectReader.Peek() <> -1
                TextLine = TextLine & ObjectReader.ReadLine()
            Loop
        Else
            MessageBox.Show("Connection String not found " + vbNewLine + vbNewLine + FileName, "Failed", MessageBoxButtons.OK, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1)
        End If
    End Sub

Dim myarray1(3, 4) As List(Of Integer)
 
        Dim myarray2(3, 4) As List(Of Integer)
        Dim mylist As New List(Of Integer)
        For i = 1 To 3
            mylist.Add(i)
        Next
        For i = 0 To 3
            For ii = 0 To 4
                myarray1(i, ii) = New List(Of Integer)
                myarray2(i, ii) = New List(Of Integer)
                myarray1(i, ii).AddRange(mylist)
            Next
        Next
        'Array.Copy(myarray1, myarray2, myarray1.Length)
        myarray2 = CType(myarray1.Clone, Global.System.Collections.Generic.List(Of Integer)(,))
 
        myarray2(2, 2).Clear()

    ' Setup source array of Lists.
    Dim originalLists(3, 4) As List(Of Integer)
 
    For i = 0 To 3
        For j = 0 To 4
            originalLists(i, j) = New List(Of Integer) From {1, 2, 3}
        Next
    Next
 
    ' Now make copies of the original Lists.
    Dim copyLists(3, 4) As List(Of Integer)
 
    For i = 0 To 3
        For j = 0 To 4
            copyLists(i, j) = New List(Of Integer)
            copyLists(i, j).AddRange(originalLists(i, j))
        Next
    Next