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]

"Sumit" <vi*******@hotmail.com> schrieb

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:
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[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
------------------
"Sumit" <vi*******@hotmail.com> wrote in message
news:3e****************************@phx.gbl...

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

[Herfried K. Wagner [MVP]]

* "Sumit" <vi*******@hotmail.com> scripsit:

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.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[Dominique Vandensteen]

add don't forget to set your constructor as private...
private sub New()
end sub

"Ken Tucker [MVP]" <vb***@bellsouth.net> wrote in message
news:ev**************@tk2msftngp13.phx.gbl...

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
------------------
"Sumit" <vi*******@hotmail.com> wrote in message
news:3e****************************@phx.gbl...

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