RE: DataTable Select method and binding

[kenny-e]

This is getting urgent - someone please help...

I have a datatable "Employees" with bound fields on a form. I use the following code to find a specific record - this works well:

Function Find(ByVal sExpression As String) As CEmployeeRecd

Dim DRs() As DataRow
Dim DTEmployee As DataTable
Dim EmployeeRecd As CEmployeeRecd

Find = Nothing
Try
'Get reference to the Employee table...
DTEmployee = m_DS.Tables("Employees")

DRs = DTEmployee.Select(sExpression)
If DRs.GetLength(0) <> 0 Then
EmployeeRecd = New CEmployeeRecd()
If Not IsDBNull(DRs(0)("LastName")) Then
EmployeeRecd.LastName = CStr(DRs(0)("LastName"))
End If
If Not IsDBNull(DRs(0)("FirstName")) Then
EmployeeRecd.FirstName = CStr(DRs(0)("FirstName"))
End If
...

Find = EmployeeRecd
End If
Catch Ex As Exception
Throw Ex
End Try

I now want the bound controls to show the found datarow. How do i achieve this in code.
(The Datarow class has an rowID field - which is private. I was hoping to set the
BindingManagerBase.postion to rowID - this isn't possible). Any ideas.

Thanks

[Borry]

O/T answer :

First of all, I should take a look at the three-tier design.
You should split up your presentation layer and your business layer.

Read your data in a new class Employee with all it's properties and then you can databind it easier to the Employee object.

There you can handle your find for a record. Probably you need to cast your dataset to a dataview with

Dim dv as dataview = ds.tables(0).defaultview
dv.find="city='Berlin'"

You should handle all these things in your business layer.

Check this out :
http://msdn.microsoft.com/library/en...asp?frame=true

Bjorn

[kenny-e]

Thanks - for the suggestion. Actually i had created a class with all the db access stuff and passed the Dataset back to the from for binding. I 've made the mods using a dataview and it works!

Cheers

[Borry]

You 're welcome

If you have 3-tier, things sort out easilier ! It's a little more work but you get a payback !