Forms inheritance problem

[Sergey Poberezovskiy]

Hi,

I created two base forms: frmList and frmDetail, compiled
them into a dll, and then want to use in my new project.
The problem: When I created new inherited form, say
frmClients, I cannot load the form in design view - the
IDE complains with
"Argument 'Path' is Nothing or empty." error.

It does not stop however the project to compile, and even
works correctly while running the project.

Unfortunately, I cannot add controls on the form
(frmClients) in design view - the IDE simply won't load
it.

Does anyone know what may be the problem and how to fix
it?

Any help will be greatly appreciated.

[One Handed Man]

Re: Forms inheritance problem

I dont think this is possible. The reason for this is that once you have
compiled it into a library, non of the source information is then available
for the IDE using that reference.

I suggest that you complete your design and debug it and fully test it, once
you have done this you can then put the form into a library.

Regards - OHM


Sergey Poberezovskiy wrote:[color=blue]
> Hi,
>
> I created two base forms: frmList and frmDetail, compiled
> them into a dll, and then want to use in my new project.
> The problem: When I created new inherited form, say
> frmClients, I cannot load the form in design view - the
> IDE complains with
> "Argument 'Path' is Nothing or empty." error.
>
> It does not stop however the project to compile, and even
> works correctly while running the project.
>
> Unfortunately, I cannot add controls on the form
> (frmClients) in design view - the IDE simply won't load
> it.
>
> Does anyone know what may be the problem and how to fix
> it?
>
> Any help will be greatly appreciated.[/color]

[Sergey Poberezovskiy]

Re: Forms inheritance problem

There is something wierd happening - I cannot event load
an inherited form within the dll project - event though I
can easily load both frmList and frmDetail in design view.

Any ideas?..
[color=blue]
>-----Original Message-----
>I dont think this is possible. The reason for this is[/color]
that once you have[color=blue]
>compiled it into a library, non of the source[/color]
information is then available[color=blue]
>for the IDE using that reference.
>
>I suggest that you complete your design and debug it and[/color]
fully test it, once[color=blue]
>you have done this you can then put the form into a[/color]
library.[color=blue]
>
>Regards - OHM
>
>
>Sergey Poberezovskiy wrote:[color=green]
>> Hi,
>>
>> I created two base forms: frmList and frmDetail,[/color][/color]
compiled[color=blue][color=green]
>> them into a dll, and then want to use in my new[/color][/color]
project.[color=blue][color=green]
>> The problem: When I created new inherited form, say
>> frmClients, I cannot load the form in design view - the
>> IDE complains with
>> "Argument 'Path' is Nothing or empty." error.
>>
>> It does not stop however the project to compile, and[/color][/color]
even[color=blue][color=green]
>> works correctly while running the project.
>>
>> Unfortunately, I cannot add controls on the form
>> (frmClients) in design view - the IDE simply won't load
>> it.
>>
>> Does anyone know what may be the problem and how to fix
>> it?
>>
>> Any help will be greatly appreciated.[/color]
>
>
>.
>[/color]

[One Handed Man]

Re: Forms inheritance problem

This may help ?

http://visualbasic.about.com/library/weekly/aa081703a.htm

Regards OHM


Sergey Poberezovskiy wrote:[color=blue]
> There is something wierd happening - I cannot event load
> an inherited form within the dll project - event though I
> can easily load both frmList and frmDetail in design view.
>
> Any ideas?..
>[color=green]
>> -----Original Message-----
>> I dont think this is possible. The reason for this is that once you
>> have compiled it into a library, non of the source information is
>> then available for the IDE using that reference.
>>
>> I suggest that you complete your design and debug it and fully test
>> it, once you have done this you can then put the form into a library.
>>
>> Regards - OHM
>>
>>
>> Sergey Poberezovskiy wrote:[color=darkred]
>>> Hi,
>>>
>>> I created two base forms: frmList and frmDetail, compiled
>>> them into a dll, and then want to use in my new project.
>>> The problem: When I created new inherited form, say
>>> frmClients, I cannot load the form in design view - the
>>> IDE complains with
>>> "Argument 'Path' is Nothing or empty." error.
>>>
>>> It does not stop however the project to compile, and even
>>> works correctly while running the project.
>>>
>>> Unfortunately, I cannot add controls on the form
>>> (frmClients) in design view - the IDE simply won't load
>>> it.
>>>
>>> Does anyone know what may be the problem and how to fix
>>> it?
>>>
>>> Any help will be greatly appreciated.[/color]
>>
>>
>> .[/color][/color]

[One Handed Man]

Re: Forms inheritance problem

OOps. Sorry, I dont think I can help you further on this as its not
something I normally do, Perhaps you could repost the question again and I
will not take part. That way maybe you will get an answer.

Regards - OHM

Sergey Poberezovskiy wrote:[color=blue]
> I'm using 2003 Enterprise Architect - so this is not
> applicable either...
>[color=green]
>> -----Original Message-----
>> This may help ?
>>
>> http://visualbasic.about.com/library.../aa081703a.htm
>>
>> Regards OHM
>>
>>
>> Sergey Poberezovskiy wrote:[color=darkred]
>>> There is something wierd happening - I cannot event load
>>> an inherited form within the dll project - event though I
>>> can easily load both frmList and frmDetail in design view.
>>>
>>> Any ideas?..
>>>
>>>> -----Original Message-----
>>>> I dont think this is possible. The reason for this is that once you
>>>> have compiled it into a library, non of the source information is
>>>> then available for the IDE using that reference.
>>>>
>>>> I suggest that you complete your design and debug it and fully test
>>>> it, once you have done this you can then put the form into a
>>>> library.
>>>>
>>>> Regards - OHM
>>>>
>>>>
>>>> Sergey Poberezovskiy wrote:
>>>>> Hi,
>>>>>
>>>>> I created two base forms: frmList and frmDetail, compiled
>>>>> them into a dll, and then want to use in my new project.
>>>>> The problem: When I created new inherited form, say
>>>>> frmClients, I cannot load the form in design view - the
>>>>> IDE complains with
>>>>> "Argument 'Path' is Nothing or empty." error.
>>>>>
>>>>> It does not stop however the project to compile, and even
>>>>> works correctly while running the project.
>>>>>
>>>>> Unfortunately, I cannot add controls on the form
>>>>> (frmClients) in design view - the IDE simply won't load
>>>>> it.
>>>>>
>>>>> Does anyone know what may be the problem and how to fix
>>>>> it?
>>>>>
>>>>> Any help will be greatly appreciated.
>>>>
>>>>
>>>> .[/color]
>>
>>
>> .[/color][/color]

[Chris Dunaway]

Re: Forms inheritance problem

On Sun, 23 Nov 2003 20:21:55 -0800, Sergey Poberezovskiy wrote:
[color=blue]
>
> Unfortunately, I cannot add controls on the form
> (frmClients) in design view - the IDE simply won't load
> it.[/color]

Does your form class have a constructor that takes NO arguments? That is
necessary for the form designer to be able to instantiate it. Can you show
us the code for the form class and information on the constructors?

--
Chris

To send me an E-mail, remove the underscores and lunchmeat from my E-Mail
address.

[Sergey Poberezovskiy]

Re: Forms inheritance problem

Every form has an overloaded constructor, but one without
parameters amongst them. The code for the frmDetail, and
frmClient is as follows:

frmDetail:

Imports System.Windows. Forms

Namespace Forms
Public Class frmDetail
Inherits System.Windows. Forms.Form

Protected _id As Int32
Protected _openMode As Constants.FormO penMode
Private _detailName As String =
Constants.Empty String

#Region " Windows Form Designer generated code "

#Region " Constructor"
Public Sub New()
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
End Sub

Public Sub New(ByVal parentMDI As Form)
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
Me.ParentMDI = parentMDI
End Sub

Public Sub New(ByVal detailName As String)
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
Me.DetailName = detailName
End Sub

Public Sub New(ByVal parentMDI As Form, ByVal
detailName As String)
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
Me.ParentMDI = parentMDI
Me.DetailName = detailName
End Sub
#End Region

'Form overrides dispose to clean up the component
list.
Protected Overloads Overrides Sub Dispose(ByVal
disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Disp ose()
End If
End If
MyBase.Dispose( disposing)
End Sub

'Required by the Windows Form Designer
Private components As
System.Componen tModel.IContain er

'NOTE: The following procedure is required by the
Windows Form Designer
'It can be modified using the Windows Form
Designer.
'Do not modify it using the code editor.
Protected Friend WithEvents btnSave As
System.Windows. Forms.Button
Protected Friend WithEvents btnCancel As
System.Windows. Forms.Button

<System.Diagnos tics.DebuggerSt epThrough()>
Private Sub InitializeCompo nent()
Me.btnSave = New System.Windows. Forms.Button
Me.btnCancel = New System.Windows. Forms.Button
Me.SuspendLayou t()
'
'btnSave
'
Me.btnSave.Anch or = CType
((System.Window s.Forms.AnchorS tyles.Bottom Or
System.Windows. Forms.AnchorSty les.Right),
System.Windows. Forms.AnchorSty les)
Me.btnSave.Dial ogResult =
System.Windows. Forms.DialogRes ult.Cancel
Me.btnSave.Loca tion = New System.Drawing. Point
(175, 298)
Me.btnSave.Name = "btnSave"
Me.btnSave.Size = New System.Drawing. Size(70,
25)
Me.btnSave.TabI ndex = 19
Me.btnSave.Text = "&Save"
'
'btnCancel
'
Me.btnCancel.An chor = CType
((System.Window s.Forms.AnchorS tyles.Bottom Or
System.Windows. Forms.AnchorSty les.Right),
System.Windows. Forms.AnchorSty les)
Me.btnCancel.Di alogResult =
System.Windows. Forms.DialogRes ult.Cancel
Me.btnCancel.Lo cation = New
System.Drawing. Point(284, 298)
Me.btnCancel.Na me = "btnCancel"
Me.btnCancel.Si ze = New System.Drawing. Size
(70, 25)
Me.btnCancel.Ta bIndex = 17
Me.btnCancel.Te xt = "&Cancel"
'
'frmDetail
'
Me.AutoScaleBas eSize = New System.Drawing. Size
(5, 13)
Me.ClientSize = New System.Drawing. Size(367,
332)
Me.Controls.Add (Me.btnSave)
Me.Controls.Add (Me.btnCancel)
Me.MinimumSize = New System.Drawing. Size(375,
370)
Me.Name = "frmDetail"
Me.ResumeLayout (False)

End Sub
#End Region

#Region " Public Properties"
Public Property Id() As Int32
Get
Return _id
End Get
Set(ByVal Value As Int32)
If Not _id.Equals(Valu e) Then
_id = Value
sbSetFormText()
If Not Value.Equals(0) Then
sbSetRecord()
End If
End If
End Set
End Property

Public Property DetailName() As String
Get
Return _detailName
End Get
Set(ByVal Value As String)
_detailName = Value
End Set
End Property

Public WriteOnly Property ParentMDI() As Form
Set(ByVal Value As Form)
Me.MdiParent = Value
End Set
End Property

Public WriteOnly Property OpenMode() As
Constants.FormO penMode
Set(ByVal Value As Constants.FormO penMode)
_openMode = Value
sbSetFormText()
sbSetControlsMo de()
End Set
End Property
#End Region

#Region " Private routines"
Protected Overridable Sub sbSetControlsMo de()

End Sub

Protected Overridable Sub sbSetRecord()

End Sub

Protected Overridable Function fnCheck() As
Boolean

End Function

Protected Overridable Sub sbSetFormText()
Select Case _openMode
Case Constants.FormO penMode.newReco rd
Me.Text = "Create New " & _detailName
Case Constants.FormO penMode.editRec ord
Me.Text = "Modify " & _detailName
& " " & _id.ToString
Case Constants.FormO penMode.viewRec ord
Me.Text = "View " & _detailName & " "
& _id.ToString
End Select
End Sub
#End Region

Private Sub frm_Load(ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
MyBase.Load
General.SetForm Position(Me)
End Sub

Private Sub frm_Closing(ByV al sender As Object,
ByVal e As System.Componen tModel.CancelEv entArgs) Handles
MyBase.Closing
General.SaveFor mPosition(Me)
Me.Dispose()
End Sub

Private Sub btnCancel_Click (ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
btnCancel.Click
Me.Close()
End Sub

End Class
End Namespace

And frmClient:

Friend Class frmClient
Inherits BaseClasses.For ms.frmDetail

#Region " Windows Form Designer generated code "
#Region " Constructor"
Public Sub New()
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
End Sub

Public Sub New(ByVal openMode As
Constants.FormO penMode)
MyBase.New()
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
Me.OpenMode = openMode
End Sub

Public Sub New(ByVal parentMDI As Form)
MyBase.New(pare ntMDI)
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
End Sub

Public Sub New(ByVal parentMDI As Form, ByVal
openMode As Constants.FormO penMode)
MyBase.New(pare ntMDI)
'This call is required by the Windows Form
Designer.
InitializeCompo nent()
Me.OpenMode = openMode
End Sub
#End Region

'Form overrides dispose to clean up the component
list.
Protected Overloads Overrides Sub Dispose(ByVal
disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Disp ose()
End If
End If
MyBase.Dispose( disposing)
End Sub

'Required by the Windows Form Designer
Private components As System.Componen tModel.IContain er

'NOTE: The following procedure is required by the
Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnos tics.DebuggerSt epThrough()> Private
Sub InitializeCompo nent()
components = New System.Componen tModel.Containe r
Me.Text = "frmClient"
End Sub
#End Region

#Region " Overrides"
Protected Overrides Sub btnSave_Click(B yVal sender As
Object, ByVal e As System.EventArg s)

End Sub
#End Region

Protected Overrides Function fnCheck() As Boolean

End Function

Protected Overrides Sub sbSetControlsMo de()

End Sub

Protected Overrides Sub sbSetRecord()

End Sub
End Class

There isn't much code in those as I cannot add controls
to it...
[color=blue]
>-----Original Message-----
>On Sun, 23 Nov 2003 20:21:55 -0800, Sergey Poberezovskiy[/color]
wrote:[color=blue]
>[color=green]
>>
>> Unfortunately, I cannot add controls on the form
>> (frmClients) in design view - the IDE simply won't[/color][/color]
load[color=blue][color=green]
>> it.[/color]
>
>Does your form class have a constructor that takes NO[/color]
arguments? That is[color=blue]
>necessary for the form designer to be able to[/color]
instantiate it. Can you show[color=blue]
>us the code for the form class and information on the[/color]
constructors?[color=blue]
>
>--
>Chris
>
>To send me an E-mail, remove the underscores and[/color]
lunchmeat from my E-Mail[color=blue]
>address.
>.
>[/color]

[Anand Balasubramanian]

Re: Forms inheritance problem

Hi,
I have a suggestion that you can try out. Sometimes these types of weird
errors occur when one of the system dlls copylocal property is set to
true. So please check properties of the system dlls in your references
section and make sure their copylocal property is set to false. SAve the
project and then reload it and see if you can get into the desinger.

Thanks
Anand Balasubramanian
Microsoft, Visual Basic .NET

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