Making a Form that has only one instance

[Sumit]

Can any one Please tell me how to write a code to make a
form that has only one instance. Like in Visual Basic 6.0

 

[Armin Zingler]

Can any one Please tell me how to write a code to make a
form that has only one instance. Like in Visual Basic 6.0

I don't understand the question. I'd say: Don't create a second instance.

--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

 

[Ken Tucker [MVP]]

Hi,

You could try something like this.

Public Class Form2
Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "


Private Shared instance As Form2

Public Shared ReadOnly Property DefInstance() As Form2
Get
If instance Is Nothing Then instance = New Form2
Return instance
End Get
End Property
End Class

To use

Dim frm As Form2 = Form2.DefInstance
frm.ShowDialog()

Ken

 

[Herfried K. Wagner [MVP]]

Can any one Please tell me how to write a code to make a
form that has only one instance. Like in Visual Basic 6.0

How did you do that in VB6?

BTW: Singleton design pattern.

 

[Dominique Vandensteen]

add don't forget to set your constructor as private...


private sub New()
end sub