Tham khảo tài liệu 'using visual basic net databases to create pricing trading r_8', tài chính - ngân hàng, tài chính doanh nghiệp phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | XML 313 If needed the entire path to the .dtd file can be specified for example C ModelingFM xml . If the DTD is public as in the FMML case meaning that it is available on the Internet the syntax will be DOCTYPE Tradedoc SYSTEM http . _ 8100 When a DTD exists as a URI it becomes especially powerful. Assuming that all partners who exchange XML messages can access the DTD they all can use it to create and validate their XML documents anywhere in the world. Let s take a look. CREATING XML DOCUMENTS Before we create an Internet application let s first develop a simple application that will write an XML document and save it to the C drive. Step 1 In create a new Windows application named XMLexample. Step 2 On your Forml add controls to build the GUI shown in Figure . There should be two combo boxes on your form. Name them cboExchange and cboBuySell. In the Collection property of cboExchange add the elements CBOE ISE BOX AMEX and FMEX. In the Collection property of cboBuySell add the elements Buy and Sell. Give the text boxes the appropriate names txtTicker txtQuantity txtPrice txtClearingFirm and txtTrader. Step 3 To the Button1_Click event add the following code Imports Public Class Forml Inherits Windows Form Designer Generated Code Private Sub Button1_Click ByVal sender As . Handles Dim strTradeDoc As String strXMLtrade xml version strXMLtrade Tradedoc strXMLtrade Trade strXMLtrade Exchange Acronym strXMLtrade Ticker Ticker Team-LRN 314 Advanced FIGURE strXMLtrade BuySell Type strXMLtrade Quantity Quantity strXMLtrade Price Type strXMLtrade ClearingFirm ClearingFirm strXMLtrade Trader Trader strXMLtrade Time Now Time strXMLtrade Trade strXMLtrade Tradedoc Dim objWriter As New StreamWriter C ModelingFM .
