how do you refer to the parent form, from the child form in VB.NET 2

[Ross1811]

Hello everyone,

Got a quick question, how do you refer to the parent form, from the child form in VB.NET.

Basically I do not want to make another form (the same one twice) such as
Dim a as New Frmmain
a.Hide()
a.Show()

I just want to hide and show frmMain from another form,
I want to just call frmMain.Hide and show without recreating another, any ideas????? Also maybe is it something to do with Public Class frmMain on the original form??????????????????????


Thanks,
Ross

 

[croag]

Hey man, If you look in my profile..I believe I asked the same question a while back...and I got a great piece of info from someone....it was a function that allowed you to do that easily...kinda like you used to be able to do back in VB6

 

[Ross1811]

It says when I look at your profile ...And will be back shortly. Thank you for your patience while we work to improve the site.

 

[croag]

oh boy...okay..let me dig it up for ya.

 

[croag]

well man...it was from experts-exchange..not here. sorry about that...but it this what you're trying to do? Let me know.. i Know it seems long winded..but i guess this is the way you have to do it for now..


Here is the post:

http://www.experts-exchange.com/Programming/Programming_Languages/Dot_Net/VB_DOT_NET/Q_21134394.html

And here is the code.


This is what I use to find a control recursively looking through other container controls:

Public Function FindControlByName(ByVal containerParent As Object, ByVal nameSearch As String) As Control

' Description:
' Starting with the top-level container, search through each control looking for a control
' with the specified name. If the current control has children controls, such as a GroupBox, then
' recursively call this routine to search for the control in each container.

' VB.NET is different in this regard from VB6, where Me.Controls in VB6 contained all the controls
' for the form, and in VB.NET it contains only the top-level controls.

Dim foundControl As Control

Try

For Each controlCurrent As Control In containerParent.Controls

If controlCurrent.Controls.Count > 0 Then

' The current control owns other controls, so search through the
' controls for that container for the specified control name.
foundControl = FindControlByName(controlCurrent, nameSearch)
End If

' Control not found from the container search?
If foundControl Is Nothing Then

' Control matched by name?
If controlCurrent.Name = nameSearch Then

' Return a reference to the control to the caller.
foundControl = controlCurrent

' Don't go any further, since the control was found.
Exit For

End If ' Control matched by name?

Else

' Don't go any further, since the control was found on the container.
Exit For

End If ' Control not found from the container search?

Next controlCurrent

Finally

End Try

Return foundControl

End Function 'FindControlByName'

Bob

 

[Ross1811]

I am not trying to find a control on the parent form I am trying to just call it from the child form. Such as

Dim a as New Frmmain '(this creates two, the parent and this one)
a.Hide()
a.Show()

I just need to call it from the child without reproducing the parent. Such as frmMain.hide
frmMain.Show --> this will not create the uneeded duplicate

Ross

 

[JohnYingling]

'In frmMain
Public Shared SingleInstance As FrmMain = New FrmMain


'Outside frmMain
frmMain.SingleInstance.Hide

http://www.VBResizer.com

Forms/Controls Resizing/Tabbing

http://www.VBCompare.com

Compare Code

http://www.VBSortGen.com

Generate Sort Class in VB

http://www.Vbcompare.com/Check.Htm(1979

Check To MS)

 

[Ross1811]

I am kinda lost with

'In frmMain
Public Shared SingleInstance As FrmMain = New FrmMain


'Outside frmMain
frmMain.SingleInstance.Hide

I put that in my code and it does not like it from the get go but I believe it is something like this. Do I replace Public Class frmMain at the begining of the form? If so Public Shared SingleInstance As FrmMain = New FrmMain creates an error, where should I be placing it?

 

[JohnYingling]

Put
Public Shared SingleInstance As FrmMain = New FrmMain

inside the class where you would put ANY class level variables.

Public Class FrmMain
Inherits System.Windows.Forms.Form

Public Shared SingleInstance As FrmMain = New FrmMain

http://www.VBResizer.com

Forms/Controls Resizing/Tabbing

http://www.VBCompare.com

Compare Code

http://www.VBSortGen.com

Generate Sort Class in VB

http://www.Vbcompare.com/Check.Htm(1979

Check To MS)