Mark Cooray,
1. Steps to display data oon DataGridView:
1). Select the data source, SQL Server or Access or some else, write the connection string correctly for the DGV control.
2). Use the data access control such as DataReader or DataSet porperly according to the data you would like to show.
3). Add the related controls according to the data you wwant to show in each of the columns, such as DataGridViewTextBoxColumn or DataGridViewComboBoxColumn.
2. Try the following code to show the data in the Combobox in order the data can be edited in the ComboBox SelectedIndexChanged event:
PrivateWithEvents dataGridView1 AsNew DataGridView()
PrivateSub AddColorColumn()
Dim comboBoxColumn AsNew DataGridViewComboBoxColumn()
comboBoxColumn.Items.AddRange( _
Color.Red, Color.Yellow, Color.Green, Color.Blue)
comboBoxColumn.ValueType = GetType(Color)
dataGridView1.Columns.Add(comboBoxColumn)
EndSub
PrivateSub dataGridView1_EditingControlShowing(ByVal sender AsObject, _
ByVal e As DataGridViewEditingControlShowingEventArgs) _
Handles dataGridView1.EditingControlShowing
Dim comboBox1 As ComboBox = CType(e.Control, ComboBox)
AddHandler comboBox1.SelectedIndexChanged, _
New EventHandler(AddressOf ComboBox_SelectedIndexChanged)
EndSub
PrivateSub ComboBox_SelectedIndexChanged( _
ByVal sender AsObject, ByVal e As EventArgs)
Dim comboBox1 As ComboBox = CType(sender, ComboBox)
comboBox1.BackColor = _
CType(CType(sender, ComboBox).SelectedItem, Color)
EndSub