I am forgetting something obvious, I think. I have a form with a combobox on
it. I place the code (below) in the form. Instead of populating the dropdown
with 0 and 1, as I expected, it populates it with two rows, each containing
the string "MyProject.Form 1+test"
What am I missing (besides sleep)? Do I need to implement some kind of
interface in test?
Public Class test
Public Sub New(ByVal v As Integer)
Me.Value = v
End Sub
Public Value As Integer
End Class
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim x As New ArrayList
x.Add(New test(0))
x.Add(New test(1))
cbo.DataSource = x
End Sub
-AJ 3 972
For the datasource, you can use any object that implements iList.
If you want to use an ArrayList, just populate it with strings and assign
the ComboBox.dataso urce to the ArrayList. The ComboBox.Select edIndex
property will return the zero-based index value of the entry.
You could use a DataTable, or a DataView as the datasource. You can assign
the ComboBox.Displa yMember and ValueMember properties to the corresponding
fields of the DataTable. In that case the SelectedValue property will return
the field value of ValueMember, and DisplayMember provides the list of
visible items. www.charlesfarriersoftware.com
"Adam J. Schaff" wrote: I am forgetting something obvious, I think. I have a form with a combobox on it. I place the code (below) in the form. Instead of populating the dropdown with 0 and 1, as I expected, it populates it with two rows, each containing the string "MyProject.Form 1+test"
What am I missing (besides sleep)? Do I need to implement some kind of interface in test?
Public Class test Public Sub New(ByVal v As Integer) Me.Value = v End Sub Public Value As Integer End Class
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As System.EventArg s) Handles MyBase.Load Dim x As New ArrayList x.Add(New test(0)) x.Add(New test(1)) cbo.DataSource = x End Sub
-AJ
Hi,
You can bind to an arraylist and show any property in the class.
Change you class to this.
Public Class test
Dim mVal As Integer
Public Sub New(ByVal v As Integer)
Me.Value = v
End Sub
Public Property Value() As Integer
Get
Return mVal
End Get
Set(ByVal Value As Integer)
mVal = Value
End Set
End Property
End Class
Dont forget to set the display member
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim x As New ArrayList
x.Add(New test(0))
x.Add(New test(1))
cbo.DataSource = x
cbo.displaymemb er = "Value"
End Sub
Ken
---------------------
"Adam J. Schaff" <ab****@adelphi a.net> wrote in message
news:ur******** ******@TK2MSFTN GP14.phx.gbl...
I am forgetting something obvious, I think. I have a form with a combobox on
it. I place the code (below) in the form. Instead of populating the dropdown
with 0 and 1, as I expected, it populates it with two rows, each containing
the string "MyProject.Form 1+test"
What am I missing (besides sleep)? Do I need to implement some kind of
interface in test?
Public Class test
Public Sub New(ByVal v As Integer)
Me.Value = v
End Sub
Public Value As Integer
End Class
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim x As New ArrayList
x.Add(New test(0))
x.Add(New test(1))
cbo.DataSource = x
End Sub
-AJ
Thanks! I had tried setting the DisplayMember, but I hadn't tried using
true properties instead of public variables. I had no idea there was such a
difference. Ironically, I always use full properties in my classes for
professional work. I was "cheating" here because I was working on a quick,
throwaway application to test a concept.
Anyway, thanks again for the help.
"Ken Tucker [MVP]" <vb***@bellsout h.net> wrote in message
news:ea******** ******@TK2MSFTN GP09.phx.gbl... Hi,
You can bind to an arraylist and show any property in the class. Change you class to this. Public Class test
Dim mVal As Integer
Public Sub New(ByVal v As Integer)
Me.Value = v
End Sub
Public Property Value() As Integer
Get
Return mVal
End Get
Set(ByVal Value As Integer)
mVal = Value
End Set
End Property
End Class Dont forget to set the display member
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As System.EventArg s) Handles MyBase.Load Dim x As New ArrayList x.Add(New test(0)) x.Add(New test(1)) cbo.DataSource = x
cbo.displaymemb er = "Value" End Sub
Ken --------------------- "Adam J. Schaff" <ab****@adelphi a.net> wrote in message news:ur******** ******@TK2MSFTN GP14.phx.gbl... I am forgetting something obvious, I think. I have a form with a combobox on it. I place the code (below) in the form. Instead of populating the dropdown with 0 and 1, as I expected, it populates it with two rows, each containing the string "MyProject.Form 1+test"
What am I missing (besides sleep)? Do I need to implement some kind of interface in test?
Public Class test Public Sub New(ByVal v As Integer) Me.Value = v End Sub Public Value As Integer End Class
Private Sub Form1_Load(ByVa l sender As System.Object, ByVal e As System.EventArg s) Handles MyBase.Load Dim x As New ArrayList x.Add(New test(0)) x.Add(New test(1)) cbo.DataSource = x End Sub
-AJ This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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