User Control question

What is AmbientMode and Ambient.UserMode and when are they True and when are they False? What's the purpose?

It is allow the control to determine whether it's executing at design time (UserMode = False) or at run time.

Read this topic for more details.

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Originally Posted by 4x2y

It is allow the control to determine whether it's executing at design time (UserMode = False) or at run time.

Read this topic for more details.

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If I run the project from the IDE is it considered design time or run time? I ask because when I am in the VB IDE and I run the project UserControl.Ambient.UserMode is always True. Is that the way it is supposed to be?

Another question: What is the difference between the keywords UserControl and Me when used in a UserControl?

Quote:

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Originally Posted by jmsrickland

If I run the project from the IDE is it considered design time or run time? I ask because when I am in the VB IDE and I run the project UserControl.Ambient.UserMode is always True. Is that the way it is supposed to be?

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From MSDN article:

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The most important property of the AmbientProperties object is UserMode, which allows an instance of your control to determine whether it's executing at design time (UserMode = False) or at run time. Use of this property is discussed in "Creating Design-Time-Only or Run-Time-Only Properties," later in this chapter.

Tip To remember the meaning of UserMode, recall that at design time the person working with your control is a developer, rather than an end user. Thus the control is not in "user" mode, so UserMode = False.

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So it is always True at run time, False at design time. To well understand this property, create new project, add UserControl and paste this code

Code:

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Private Sub UserControl_Resize()
    If UserControl.Ambient.UserMode = True Then
        Label1.Caption = "UserControl.Ambient.UserMode = True " & Format(Now, "hh:MM:ss") ' just to know that part continuously invoked.
    Else
        Label1.Caption = "UserControl.Ambient.UserMode = False " & Format(Now, "hh:MM:ss")
    End If
End Sub

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Quote:

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Originally Posted by jmsrickland

Another question: What is the difference between the keywords UserControl and Me when used in a UserControl?

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The Me keyword does not work in a UserControl.

Quote:

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Originally Posted by 4x2y

From MSDN article:
So it is always True at run time, False at design time. To well understand this property, create new project, add UserControl and paste this code

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OK, I see the difference now.

Quote:

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Originally Posted by 4x2y

The Me keyword does not work in a UserControl.

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Oh, but it does work in a UserControl. I further checked into this and it appears the difference is this:

UserControl has all the properties of a UserControl similar to what a Form has, whereas, Me has all the Public variables, Functions, and Subs that appear in the UserControl but not the Private ones.

What i said is still true "The Me keyword does not work in a UserControl.", that is you cannot use Me in usercontrol like you do in a form.

Quote:

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Originally Posted by 4x2y

What i said is still true "The Me keyword does not work in a UserControl.", that is you cannot use Me in usercontrol like you do in a form.

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Aw, yes, but that isn't what you said the first time. You simply said the Me keyword does not work in a UserControl. I can see that they don't expose the same properties.