How to bind data to comboxBox in

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How to bind data to combobox?

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Try this

Dim dbadp As New SqlDataAdapter("Select ...", "connection string")
Dim dTable As New DataTable
Combobox1.DataSource = dTable

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käµfm³d 👽Commented:
What is the source of the data? For example, you could bind to a List:

Dim source As New List(Of String)


Me.ComboBox1.DataSource = source

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...or a DataTable:

Dim source As New DataTable

source.Columns.Add("color", GetType(String))


Me.ComboBox1.DataSource = source
Me.ComboBox1.DisplayMember = "color"

Open in new window

...or any number of other sources. It all depends on what you are binding to.
developer2012Author Commented:
Public Class CrossingReport
    Private Sub BindComboBox()

  Dim conn As New OleDbConnection("Provider=SQLOLEDB;Data Source=xxx-xxx;User ID=tmds;Initial Catalog=tmdsDatabaseStatic")
        Dim command As String = "select DOT from dbo.tblSystemInformationHighwayCrossings"
        Dim cmd As New OleDbCommand(command, conn)
        Dim da As New OleDbDataAdapter(cmd)
        Dim table As New DataTable("dbo.tblSystemInformationHighwayCrossings")
        cbxDot.DisplayMemberPath = "DOT"
        cbxDot.DataContext = table
  End Sub

I used the above  code. But it does not do anything. AM I missing anything?
I am developing my application in "WPF".
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Jacques Bourgeois (James Burger)PresidentCommented:
If the source is an array, a collection or any class that his described as implementing the IList interface in the documentation, you can do the following. I am assuming that variable myCustomers is a collection of customers with an ID property that holds the customer number and Name that holds the user name.

ComboBox1.DataSource = myCustomers
ComboBox1.DisplayMember = "Name"
ComboBox1.ValueMember = "ID"

This will display the name of the customers, but will enable you to easily retrieve their ID when the user makes a selection. If you are working from a DataTable, specify the name of the field instead of the property.

When the user makes a selection, you can retrieve different values with code similar to the following:

customerID = CInt(ComboBox1.SelectedValue)
customerName = ComboBox1.Text

You can also retrieve the whole information about the customer through the SelectedItem property with code like the following:

Dim selectedCustomer as Customer
selectedCustomer = DirectCast(ComboBox1.SelectedItem, Customer)
instead of DataContext use itemsSource
and instead of binding to the datatabel bind to the defaultview of the datatable

cbxDot.itemsSource =  table.DefaultView;
cbxDot.DisplayMemberPath = "DOT";
developer2012Author Commented:
'Dim da As New OleDbDataAdapter(cmd)
        Dim ConnectionStringDummy As New OleDbConnection("Provider=SQLOLEDB;Data Source=xxxxxxx;UserID=xxxx;InitialCatalog=tmdsDatabaseStatic")
        Dim OleDbCommand1 As OleDbCommand
        Dim OleDbDataReader1 As OleDbDataReader

        OleDbCommand1 = New OleDbCommand("Select DOT from dbo.tblSystemInformationHighwayCrossings", ConnectionStringDummy)
        OleDbDataReader1 = OleDbCommand1.ExecuteReader()
        While (OleDbDataReader1.Read())

        End While

Okay, I implemented this code. Though my connections are open but my code does not seems to work?

Is there any thing I am missing  or

can somebody please explain me step by step how to bind a combobox with datatable and dispaly it?

@ Code Cruiser:  I applied the code which you gave me . IT does not show any error but never shows any output. :(.

@ Aruiz04:  I did your code but i keep getting an error message "ITemSource" is not a property of system,windows.controls.

Thanks Kaufmed. You idea gave me an insight into the problem.
Jacques Bourgeois (James Burger)PresidentCommented:
A DataTable is a collection of rows. The technique I described for a collection works with DataTables.

Set the DataTable as the DataSource, and use the DisplayMember property to specify which field you want to be listed.
developer2012Author Commented:
@ JamesBurger: Thanks. Code in works perfectly fine. But, When I use the same techniques in wpf. It does not display any data in the comboBox. Thanks
developer2012Author Commented:
Okay Thanks All. Just dropped the bugger right into the ComboBox and does displays data now :)
The code I gave you is for WPF controls, that's what you said earlier

-> I am developing my application in "WPF".
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