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December 19th, 2012, 07:29 PM
#1
Creating custom arrays control
G'day Guys,
I'm currently working on a form in VB.Net 2010 which has a number of controls which are added dynamically at runtime to a panel which sits in a tabcontrol.
The control i'm trying to add is a groupbox with a number of textboxes and labels.
I have been using the following example: http://msdn.microsoft.com/en-us/libr...=vs.71%29.aspx
Where I'm stuck is that I have an Null value error when the form is loading which comes from my control array class.
This error is generated by
Code:
me.list.add(machine_control)
where machine_control is an instance of my custom controls class.
Does anyone have any pointers as to how I can initializes this with values to avoid the NULL value error.
-Cheers Robbo
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December 20th, 2012, 08:51 AM
#2
Re: Creating custom arrays control
Which Form event did you put that line of code?
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December 25th, 2012, 08:01 PM
#3
Re: Creating custom arrays control
Hi HanneSThEGreaT,
The Line of code is in the array control class. the Add_a_machine_grpbox_to_the_list is called called whenever I want to add another custom control
Code:
Public Function Add_a_machine_grpbox_to_the_list()
'Creates a new instance of the custom machine info control class
Dim Machine_Control As Custom_View.Machine_details_box
'Add the custom control to the collections internal list
Me.List.Add(Machine_Control)
'Adds the button to the controls collection of the panelview
HostForm.Controls.Add(Machine_Control)
Thanks
Robbo
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