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Populate ComboBox based on selection of another ComboxBox

Hi Everyone,
I have a database table that have 4 field( C1, C2,
M1, M2) on my form i have two combo box ComboC and ComboM

C1 C2 M1
1 Sales 1
Monthly Terms
1 Sales 2
Annual Terms
1 Sales 3
Yearly Terms
2 Tech 1
2 Tech 2
2 Tech 3

I write a procedure that populate ComboC with a Combine distinct info from
the table(C1 ' ' + ' ' + C2) and When you Select any item from ComboC it
populates ComboM with the List of item in (M1 ' ' + ' ' + M2) in other words
if you select Sales in ComboC it should populate ComboM with Monthly Teems,
Annual Terms and Year Terms

It have the code that populate the comboxC below, I need help with the
procedure that will populate ComboM based on selection of comboxC

Dim mySqlConnection As SqlConnection
mySqlConnection = New
SqlConnection(S ystem.Configura tion.Configurat ionSettings.App Settings.Get("C o
nnectionString" ))
mySqlConnection .Open()
Dim Dt As DataTable
Dim Ds As New DataSet
Dim StrSql As String
StrSql = "SELECT Distinct ClientNumber + ' ' + ' ' + ClientName as
MyClients, ClientNumber as ClientID FROM ClientMatter"
Dim Da As New SqlDataAdapter( StrSql, mySqlConnection )
_dtClient = Ds.Tables(0)
cmbClient.Value Member = "ClientID"
cmbClient.Displ ayMember = "MyClients"
cmbClient.DataS ource = _dtClient.Defau ltView
Catch ex As Exception
MsgBox(ex.Messa ge.ToString)
End Try
mySqlConnection .Close()

Nov 21 '05 #1
0 2142

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