[RESOLVED] How can I pass a name selected from a ListView into another form

[robert_anisoiu]

Hi,

I have a form when, in a ListView, I select a name. How can I pass this name into another form as a parameter or something else.

So let's say that in form1 I select a name from a ListView and I want to open form2 that know the name selected in form1.

Thank you
Robert

[Atheist]

You could either create a constructor that takes the parameters you wish to pass, or create a public property that you set after creating the form.
The constructor option would look like this:

Public Class MyForm
    Private someText as String
    Sub New(ByVal text As String)
        Me.someText = text
    End Sub
End Class

And the usage is simple

Dim instance As New MyForm("Hello world")

[petevick]

You could always create a module, and store it away as a pubic variable

[robert_anisoiu]

I tried to store the selected item from listview into a public variable named "selection" in form1, and I tried to display the content of "selection" variable in form2.
Unfortunatelly I receive an error message "NullReference" so, I think that the content of "selection" variable is lost somwhere between form1 and form2.

[robert_anisoiu]

You could always create a module, and store it away as a pubic variable

Please, you can be more specific? What means to create a module?

Thank you

[Atheist]

How are you trying to access that public variable in Form1?
Have you tried the constructor solution I mentioned?

[robert_anisoiu]

How are you trying to access that public variable in Form1?

In Form1 I have the ListView and a procedure like this:

    Public Sub take()
        Form2.selection = ListView1.FocusedItem.Text
    End Sub

and in Form2 I have:

Public selection

and

Me.Label1.Text = selection

[Atheist]

I bet this problem origins from the use of default instances. Where is the NullReferenceException being thrown? My guess is that you're calling the 'take' method on the default instance, and the actual Form1 you're displaying is not the default instance.

I still think the constructor solution is the best design in this case though.

[petevick]

Project>Add Module

Public strCustomer

then on selection of the listview
strCustomer = listview1(isel).text

[robert_anisoiu]

Thanks a lot, Petevick