同じフォームを複数回開く

Question

フォームを複数回開くことはできますか？

押しform2.show

ボタン1 ボタン1 Form2が

押しボタン1をもう一度可能であれば、別のForm2が古いのForm2に次の

を開き、Form1のボタンはすべて殺すことができ 開きますForm2のウィンドウが開きますか？

Answer 1

もちろん可能です。同じフォームの2つのインスタンスだけを暗くします。

Public Class Form1 

    Private m_WindowList As New List(Of Form2) 

    Private Sub OpenWindowButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenWindowButton.Click 
     OpenWindow() 
    End Sub 

    Private Sub CloseWindowsButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CloseWindowsButton.Click 
     CloseWindows() 
    End Sub 

    Private Sub OpenWindowsButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenWindowsButton.Click 
     Dim WindowCount As Int32 
     If Int32.TryParse(WindowCountTextBox.Text, WindowCount) Then 
      OpenWindows(WindowCount) 
     End If 
    End Sub 

    Private Sub OpenWindow() 
     Dim NewWindow As New Form2 
     m_WindowList.Add(NewWindow) 
     NewWindow.Show() 
    End Sub 

    Private Sub OpenWindows(ByVal Count As Int32) 
     For i = 1 To Count 
      OpenWindow() 
     Next 
    End Sub 

    Private Sub CloseWindows() 
     For Each Window In m_WindowList 
      Window.Close() 
      Window.Dispose() 
     Next 
     m_WindowList.Clear() 
    End Sub 

End Class 

Answer 2

Dim MyNewForm2 = New Form2 
MyNewForm2.Show