Databinding textbox

Hi All,

Getting a problem when trying to bind data to a textbox in a smart
device application using visual studio 2003, CF 1.0 and win ce 4.2.
Below is the code:

Code:

---

strSQL = "SELECT * FROM Visit WHERE SiteID= '"
& strSiteName & "' AND D_Date = '" & strDate & "' AND UserID = '" &
strUserName & "'"
cmd.CommandText = strSQL
da = New SqlCeDataAdapter(cmd)
ds = New DataSet
da.Fill(ds, "SiteVisit")
txtSourceID.DataBindings.Add("Text", ds.Tables("SiteVisit"), "SourceID")

---

When trying to bind I get an argument exception error with null
reference? This same code works fine in my test windows application,
so what could the problem be? I even know that the data is there as
databinding to a datagrid works fine, it's just textboxes that seem to
be a problem. Any ideas would be appreciated!


Cheers


Dan