ComboBox.DataSource = {DataView}; But after is still = Nothing

[Jon Brunson]

I've got a very weird problem, when I run the following code the
ComboBox (Me.cmbInputDev ice) is always empty. The ComboBox is on a
UserControl in a Class Library. I'm using VS.NET 2003 with SourceSafe
6.0d (the problem occurs whether the code is checked in or out)

If I step through the code, The line

Me.cmbInputDevi ce.DataSource = dv

Executes fine (ie, doesn't error), but on the next line (after an
F8/F11) Me.cmbInputDevi ce.DataSource is still equal to Nothing.

dv is definately not Nothing, and is definately not empty (I can view
it's contents in the Command Window)

*if* I delete the combo box from the control, and add a new one, give it
the same name, etc, it works for a while, but then goes back to
not-working after an unknown period. This isn't any kind of practical
solution.


Sql.GetDeviceTa ble() returns a valid & populated DataTable

[VB.NET] (Native Language)

Dim dt As DataTable = Sql.GetDeviceTa ble()

Dim dr As DataRow = dt.NewRow()
dr("ID") = DBNull.Value
dr("Description ") = "<None>"
dt.Rows.Add(dr)

Dim dv As DataView = dt.DefaultView
dv.Sort = "Descriptio n"
dv.ApplyDefault Sort = True

Me.cmbInputDevi ce.DataSource = dv
Me.cmbInputDevi ce.DisplayMembe r = "Descriptio n"
Me.cmbInputDevi ce.ValueMember = "ID"

[C#] (Translation)

DataTable dt = Sql.GetDeviceTa ble();

DataRow dr = dt.NewRow();
dr("ID") = DBNull.Value;
dr("Description ") = "<None>";
dt.Rows.Add(dr) ;

DataView dv = dt.DefaultView;
dv.Sort = "Descriptio n";
dv.ApplyDefault Sort = True;

this.cmbInputDe vice.DataSource = dv;
this.cmbInputDe vice.DisplayMem ber = "Descriptio n";
this.cmbInputDe vice.ValueMembe r = "ID";