Dynamically adding a user control

[tverney]

There has to be a simple answer to this. I created a user control called ctlAuditDetailExpert in VB.Net. I can manually add it to a parent windows form successfully.

 

The goal is to allow the user to add new instances of cltAuditDetailExpert at runtime. I attempted to add the user control as follows

 

Sub Test(lpName as string)

Dim ctl as New ctlAuditDetailExpert

with ctl

.location = New Point(50,50)

.visible = true

.show()

.name = lpName

end With

End Sub

 

The code run fine, no error messages but the newly added user control is not seen on the parent form. What am I missing?

[Mister E]

You have to add it to the parent form with the Controls.AddRange method. Also, in addition, you might consider using an array as a class member that holds the newly created instances of the controls (instead just using a variable with function-level scope). This will allow you to reference the object later.

[AlexCode]

Man... You're creating the control alright but you're missing the part where you tell where to put it!!

 

Try adding domething like: Me.Controls.Add(ctl)

 

That will work...

 

Alex :p

[AlexCode]

You might also want to add some handles to some events...

 

Take a peak at the AddHandler method...

[tverney]

That works!! Thanks so much

 

Man... You're creating the control alright but you're missing the part where you tell where to put it!!

 

Try adding domething like: Me.Controls.Add(ctl)

 

That will work...

 

Alex :p

 

Alex, thanks for the help! This was driving me nuts.

[AlexCode]

No swett...

This can become a little harder when we need this kind of behaviour but at design-time...

 

At Run-Time it's straight-forward!

 

Alex :p

[tverney]

Thanks for pointing out the obvious

 

You have to add it to the parent form with the Controls.AddRange method. Also' date=' in addition, you might consider using an array as a class member that holds the newly created instances of the controls (instead just using a variable with function-level scope). This will allow you to reference the object later.[/quote']

 

Mister E,

Thanks thinking one step ahead of me when it came to the control collection. The obvious didn't come clear until later in the process; then I re-read your response.