Binding to dropdownlist inside datagrid

How do I bind data to a dropdownlist INSIDE a datagrid control?
bme2youAsked:
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YZlatCommented:
create a separate binding function for example:

Public Function BindState()
        Dim Reader As OleDbDataReader
        Dim sql,strConn As String
      strConn="Your connection string here"
        sql = "SELECT Field1 FROM Table1"
      Dim Conn As OleDbConnection
       Conn = New OleDbConnection(strConn)
        Try
                  Conn.Open()
      Catch ex as Exception
               ''handle your exception
      End Try
        Dim Cmd As OleDbCommand = New OleDbCommand(sql, Conn)
       
        Reader = Cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)

        Return Reader
    End Function

Then call this function from .aspx file from dropdown Item Template:

<asp:TemplateColumn HeaderText="My header">
                                    <ItemTemplate>
                                          <asp:DropDownList id=Dropdownlist1 runat="server" DataMember="Table1" Width="150px" DataValueField="FieldID" DataTextField="Field1" DataSource="<%# BindState() %>">
                                          </asp:DropDownList>
                                    </ItemTemplate>
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