VB 6 LOAD form to VB.NET Question

[Michael Erlewine]

I am trying to learn VB.Net and can't figure out how to call a from from
another form. In VB6, I just issue a Load FormX, and an Unload FormX... and
Show the form and there it is.

I am sure it is obvious, but I can't see how to do that in VB.net. Does
someone have a piece of code that will call a from from another form and
have it appear.

Thanks,

Michael Erlewine
(e-mail address removed)

 

[jo0ls]

I am trying to learn VB.Net and can't figure out how to call a from from
another form. In VB6, I just issue a Load FormX, and an Unload FormX... and
Show the form and there it is.

I am sure it is obvious, but I can't see how to do that in VB.net. Does
someone have a piece of code that will call a from from another form and
have it appear.

Thanks,

Michael Erlewine
(e-mail address removed)

dim f2 as new form2
f2.show
'once f2 closes we return here
'f2 is still available, and could be shown again
'we can get info from f2 still:
myString = f2.TextBox1.text
'dispose will get rid of the form
f2.dispose

 

[Pete Wright]

j00ls code does the trick, but it's worth explaining.

In .NET everything you work with is an object. So, when you add a form to
your project what you are creating is a class containing code that defines
the look, feel and behaviour of the form. To load the form then, you have to
instantiate the class. It's the same as if I'd defined a class called Pete
and wanted an object from it

Dim myPete as New Pete()

That turns my Pete class into an object. So, if you have a form class called
Form2 (as in J00ls code) you'll need to first turn that class into an object

Dim myForm as new Form2()

Then, having turned it into an object, you can go ahead and call methods on
it, like Show()

myForm.Show()


Hope that makes sense. Take a look at the programming with objects guides in
the online help for more info on how to do OO with VB.NET. It's weird at
first when you move across from VB6, but ultimately it makes a lot more
sense than the old VB6 way of doing things.

 

[Herfried K. Wagner [MVP]]

Michael,

I am trying to learn VB.Net and can't figure out how to call a from from
another form. In VB6, I just issue a Load FormX, and an Unload FormX... and
Show the form and there it is.

There is no 'Load' and 'Unload' any more. Forms in .NET are "normal"
classes.

Showing a form:

\\\
Dim f As New FooForm()
f.Show()
///

Showing a form modally:

\\\
Dim f As New FooForm()
f.ShowDialog()
f.Dispose()
///

Notice that forms which are shown modally are not disposed automatically
when they are closed, that's why you should call 'Dispose' explicitly.

 

[Michael Erlewine]

Thanks all of you for that first step, which brings me to the gate of
the second step: How do I create that 2nd form to be loaded?

In VB6, I just ADD a blank form, populate it with controls, and then
call it. How do I do that in VB.net

Thanks,

Michael Erlewine

 

[Michael Erlewine]

I got the Form to load and I figured out how to ADD A FORM to the
project. I have another question.

Much of my work is in FoxPro. All I need is to read a FREE .DBF table,
and transfer the data to variables in VD.net and use them.

I installed the VFP OLE DB data provider.

Now I need to see a sample piece of code that works that reads a free
DBF table using a search for a unique character phrase in one field, and
then gets data from a couple other character fields and a couple of Memo
Fields. Any help would be appreciated.

Thanks,

Michael Erlewine

 

[Michael Erlewine]

I am getting BUILD ERRORS like"Type 'Introduction' is not Defined."

'Introduction is the name of a form I am using.

The code looks like this:

Dim f3 As New Introduction()
F3.ShowDialog()
f3.dispose()

Any ideas?


Thanks,

Michael Erlewine
(e-mail address removed)

 

[Paul Clement]

¤ I got the Form to load and I figured out how to ADD A FORM to the
¤ project. I have another question.
¤
¤ Much of my work is in FoxPro. All I need is to read a FREE .DBF table,
¤ and transfer the data to variables in VD.net and use them.
¤
¤ I installed the VFP OLE DB data provider.
¤
¤ Now I need to see a sample piece of code that works that reads a free
¤ DBF table using a search for a unique character phrase in one field, and
¤ then gets data from a couple other character fields and a couple of Memo
¤ Fields. Any help would be appreciated.
¤

See the following:

Accessing Visual FoxPro Data in Visual Studio .NET
http://msdn.microsoft.com/library/d...ccessingvisualfoxprodatainvisualstudionet.asp


Paul ~~~ (e-mail address removed)
Microsoft MVP (Visual Basic)