control array question for VB.Net 2005

[Guest]

Hello,

I have an application that contains several checkboxes. I originally
created this app in VB.Net 2003 and upgraded the app to VB.Net 2005. I
understand the vb2005 supports control arrays. Is this correct? If so, I
would like to convert my checkboxes to a control array, but without having to
recreate them from scratch because their placement was a real pain. Is it
possible to go to the property sheet of each checkbox and assign it a
position in the control array? like checkbox0 would be chk(0), and checkbox1
would be chk(1). Am I doing this correctly?

Thanks,
Rich

 

[Chris]

Hello,

I have an application that contains several checkboxes. I originally
created this app in VB.Net 2003 and upgraded the app to VB.Net 2005. I
understand the vb2005 supports control arrays. Is this correct? If so, I
would like to convert my checkboxes to a control array, but without having to
recreate them from scratch because their placement was a real pain. Is it
possible to go to the property sheet of each checkbox and assign it a
position in the control array? like checkbox0 would be chk(0), and checkbox1
would be chk(1). Am I doing this correctly?

Thanks,
Rich

I'm a bit confused on what you are trying to do. You could always go:

Dim Arr(10) as Array
Arr(0) = CheckBox1

That being said you could do this at the begining of your form load and
then have your control array without changing the declaration of the
controls.

Chris

 

[Guest]

Thanks for your reply. Actually, I did do the array thing. Then I tried to
overload the OnEnter event of the controls (actually for textboxes, which is
where I was going to go next with the control array thing). Here is what I
have so far:

Dim arrCtrl As Control()

Private Sub From1_Load(...)
arrCtrl = New TextBox(){txt1, txt2, txt3}
....
End Sub

Private Overloads Sub OnEnter(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles
arrCtlr().enter
MessageBox.Show("Textbox " & CType(sender, TextBox).Name)
End Sub

I have a problem with ...Handles arrCtlr().Enter
I have tried ...Handles arrCtlr.Enter but I get an error message that says
something about needing to use WithEvents. What is the correct syntax for
passing an array of controls to an overloaded Event procedure?

Thanks,
Rich

 

[ronchese]

Write a method to centralize your calls:
Private Sub HandleEnter(ByVal sender As Object, ByVal e As System.EventArgs)
'...
End Sub

Then, for each control in your array, use the AddHandler statement, pointing the Enter event of textbox to that procedure:
AddHandler Textbox.Enter, AddressOf HandleEnter

When you close the form, call the RemoveHandler statement.

That's all.

[]s
Cesar

 

[Guest]

Thanks. I sort of get it. How do I invoke/call AddHandler? I enter a
textbox with the mouse. How does AddHandler get called? My goal is to avoid
writing the same routine 20 times for 20 textboxes.

Private Sub txt1_OnEnter(...) Handles...

How do I write the Addhandler so I only have one routine for all of my
textboxes? Thinking outloud here, do I add the AddHandler call in the array?

arrCtl = new Control(){txt1, txt2, txt3}

I don't know how to add the AddHandler call.

Write a method to centralize your calls:
Private Sub HandleEnter(ByVal sender As Object, ByVal e As System.EventArgs)
'...
End Sub

Then, for each control in your array, use the AddHandler statement, pointing the Enter event of textbox to that procedure:
AddHandler Textbox.Enter, AddressOf HandleEnter

When you close the form, call the RemoveHandler statement.

That's all.

[]s
Cesar

Thanks for your reply. Actually, I did do the array thing. Then I tried to
overload the OnEnter event of the controls (actually for textboxes, which is
where I was going to go next with the control array thing). Here is what I
have so far:

Dim arrCtrl As Control()

Private Sub From1_Load(...)
arrCtrl = New TextBox(){txt1, txt2, txt3}
...
End Sub

Private Overloads Sub OnEnter(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles
arrCtlr().enter
MessageBox.Show("Textbox " & CType(sender, TextBox).Name)
End Sub

I have a problem with ...Handles arrCtlr().Enter
I have tried ...Handles arrCtlr.Enter but I get an error message that says
something about needing to use WithEvents. What is the correct syntax for
passing an array of controls to an overloaded Event procedure?

Thanks,
Rich

 

[Guest]

I figured it out.

Dim ctl as control()
Private Sub Form_Load(...)
ctl = new ctl(){txt1, txt2, txt3}
Dim txt As TextBox
For Each txt In ctl
AddHandler txt.Enter, AddressOf HandleEnter
next

Private Sub HandleEnter(...)
MessageBox.Show(Ctype(sender, TextBox).Name)
End Sub

Thanks. I sort of get it. How do I invoke/call AddHandler? I enter a
textbox with the mouse. How does AddHandler get called? My goal is to avoid
writing the same routine 20 times for 20 textboxes.

Private Sub txt1_OnEnter(...) Handles...

How do I write the Addhandler so I only have one routine for all of my
textboxes? Thinking outloud here, do I add the AddHandler call in the array?

arrCtl = new Control(){txt1, txt2, txt3}

I don't know how to add the AddHandler call.

Write a method to centralize your calls:
Private Sub HandleEnter(ByVal sender As Object, ByVal e As System.EventArgs)
'...
End Sub

Then, for each control in your array, use the AddHandler statement, pointing the Enter event of textbox to that procedure:
AddHandler Textbox.Enter, AddressOf HandleEnter

When you close the form, call the RemoveHandler statement.

That's all.

[]s
Cesar

Thanks for your reply. Actually, I did do the array thing. Then I tried to
overload the OnEnter event of the controls (actually for textboxes, which is
where I was going to go next with the control array thing). Here is what I
have so far:

Dim arrCtrl As Control()

Private Sub From1_Load(...)
arrCtrl = New TextBox(){txt1, txt2, txt3}
...
End Sub

Private Overloads Sub OnEnter(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles
arrCtlr().enter
MessageBox.Show("Textbox " & CType(sender, TextBox).Name)
End Sub

I have a problem with ...Handles arrCtlr().Enter
I have tried ...Handles arrCtlr.Enter but I get an error message that says
something about needing to use WithEvents. What is the correct syntax for
passing an array of controls to an overloaded Event procedure?

Thanks,
Rich


:

Rich wrote:
Hello,

I have an application that contains several checkboxes. I originally
created this app in VB.Net 2003 and upgraded the app to VB.Net 2005. I
understand the vb2005 supports control arrays. Is this correct? If so, I
would like to convert my checkboxes to a control array, but without having to
recreate them from scratch because their placement was a real pain. Is it
possible to go to the property sheet of each checkbox and assign it a
position in the control array? like checkbox0 would be chk(0), and checkbox1
would be chk(1). Am I doing this correctly?

Thanks,
Rich

I'm a bit confused on what you are trying to do. You could always go:

Dim Arr(10) as Array
Arr(0) = CheckBox1

That being said you could do this at the begining of your form load and
then have your control array without changing the declaration of the
controls.

Chris

 

[ronchese]

Yeah!

:^D

I figured it out.

Dim ctl as control()
Private Sub Form_Load(...)
ctl = new ctl(){txt1, txt2, txt3}
Dim txt As TextBox
For Each txt In ctl
AddHandler txt.Enter, AddressOf HandleEnter
next

Private Sub HandleEnter(...)
MessageBox.Show(Ctype(sender, TextBox).Name)
End Sub

Thanks. I sort of get it. How do I invoke/call AddHandler? I enter a
textbox with the mouse. How does AddHandler get called? My goal is to
avoid
writing the same routine 20 times for 20 textboxes.

Private Sub txt1_OnEnter(...) Handles...

How do I write the Addhandler so I only have one routine for all of my
textboxes? Thinking outloud here, do I add the AddHandler call in the
array?

arrCtl = new Control(){txt1, txt2, txt3}

I don't know how to add the AddHandler call.

Write a method to centralize your calls:
Private Sub HandleEnter(ByVal sender As Object, ByVal e As
System.EventArgs)
'...
End Sub

Then, for each control in your array, use the AddHandler statement,
pointing the Enter event of textbox to that procedure:
AddHandler Textbox.Enter, AddressOf HandleEnter

When you close the form, call the RemoveHandler statement.

That's all.

[]s
Cesar









Thanks for your reply. Actually, I did do the array thing. Then I
tried to
overload the OnEnter event of the controls (actually for textboxes,
which is
where I was going to go next with the control array thing). Here is
what I
have so far:

Dim arrCtrl As Control()

Private Sub From1_Load(...)
arrCtrl = New TextBox(){txt1, txt2, txt3}
...
End Sub

Private Overloads Sub OnEnter(ByVal sender As System.Object, _
ByVal e As System.EventArgs)
Handles
arrCtlr().enter
MessageBox.Show("Textbox " & CType(sender, TextBox).Name)
End Sub

I have a problem with ...Handles arrCtlr().Enter
I have tried ...Handles arrCtlr.Enter but I get an error message that
says
something about needing to use WithEvents. What is the correct
syntax for
passing an array of controls to an overloaded Event procedure?

Thanks,
Rich


:

Rich wrote:
Hello,

I have an application that contains several checkboxes. I
originally
created this app in VB.Net 2003 and upgraded the app to VB.Net
2005. I
understand the vb2005 supports control arrays. Is this correct?
If so, I
would like to convert my checkboxes to a control array, but
without having to
recreate them from scratch because their placement was a real
pain. Is it
possible to go to the property sheet of each checkbox and assign
it a
position in the control array? like checkbox0 would be chk(0),
and checkbox1
would be chk(1). Am I doing this correctly?

Thanks,
Rich

I'm a bit confused on what you are trying to do. You could always
go:

Dim Arr(10) as Array
Arr(0) = CheckBox1

That being said you could do this at the begining of your form load
and
then have your control array without changing the declaration of the
controls.

Chris