The Customers in Visual Studio .NET

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The CustomerSearchS servlet will transfer execution to the appropriate customer form (English or Spanish) when the parameters are correctly set Providing the customer exists, the page will present all the information associated with this customer as in the figure below The page offers options to add a new order or list the orders this customer has made in the past
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The code for CustomerForm jsp starts with some JavaScript:
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<html> <head> <title>Customer</title> <meta http-eguiv="Content-Type" content="text/html; charset=iso-8859-l"> <script languages"JavaScript"> function goBack(] { if (parenthistorylength > 0) { parenthistoryback(] } }
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function goForwardO { if (parenthistorylength > 0) { parenthistoryforward() } } </script> </head>
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<%@ include file="menuhtml" %>
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This script will be used in the next block of the JSP page We have just said that you should avoid using JavaScript in your pages, but Mr Senior Developer was curious to try out some helpful client-side code The code continues with the following scriptlet:
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<h3> < % Customer customer = (Customer) session getAttribute ( "customer" ); if (customer == null) { String destinationPage = " /CustomerSearch jsp" ; %> <jsp:forward page='<%= destinationPage %> ' /> < } if % ( session getAttribute ( "message" ) != null) { out println( session getAttribute ( "message" ) + "<p>"); session removeAttribute ( "message" ) ; } if ( ( (Boolean) session getAttribute ( "isNewCustomer" ) ) booleanValue ( ) ) { out println( "Customer not f ound <p> " ) ; out println( "You can <a href =\ "javascript :goBack( ) \">search again</a>, " ) ; out println( "or insert a new customer:"); } else out println( "Existing customer :<p>" ) ; % </h3> >
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If the customer does not exist, this Java code gives the user the opportunity to search again or to insert a new customer You can see how a link is provided to the JavaScript code so the client can go back to the previous search page in the browser The browser only executes this JavaScript if the user clicks on the link If for any reason the user arrived at this page without a current customer, a forward is done to the customer search JSP page using the j sp : forward action The code continues with the presentation of the form:
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<form method="post" action="CustomerMaintenanceS"> <p>Telephone: <%= customer c_country_code %> - <%= customer c_area_code -<%= customer c_phone %> < input type=" hidden" name="c_country_code" size="3" value="<%= customer c_country_code %>"> <input type="hidden" name= " c_area_code " size="3"
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value="<%= customerc_area_code %>"> <input type="hidden" name="c_phone" size="10" value="<%= customerc_phone %>"> </p> <p>Name: First: <input type="text" name="c_first_name" value="<%= customerc_first_name %>"> Last: <input type="text" name="c_last_name" value="<%= customerc_last_name %>"> </p> <p>Address: ZIP code: <input type="text" name="c_postal_code" value="<%= customerc_postal_code %>"> </p> <p>Address (line 1): <input type="text" name="c_address_line_l" value="<%= customerc_address_line_l %>"> Address (line 2): <input type="text" name="c_address_line_2" value="<%= customerc_address_line_2 %>"> </P> <p>Remarks: <input type="text" name="c_remarks" value="<%= customerc_remarks %>"> City: <input type="text" name="c_city" value="<%= customerc_city %>"> </p> <p>Major crossroads: <input type="text" name="c_major_cr" value="<%= customerc_major_cr %>"> <% String location = SystemgetProperty("jswlocation", "US"); if (locationequals("MX")) { %> Colonia: <input type="text" name="c_colonia" value="<%= customerc_colonia %>"> <% } else { %> <input type="hidden" name="c_colonia" value=""> <% } %> </p> <p>State: <input type="text" name="c_state" value="<%= customerc_state %>"> </p> <p>Country: <input type="text" name="c_country" value="<%= customerc_country %>"> </p> <P> <% String sAction = "Update"; if (((Boolean)sessiongetAttribute("isNewCustomer"))booleanValue()) sAction = "Insert";
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<input type="submit" name="command" value="<%=sAction%>"> </p> </form> <hr> <% if (!((Boolean)sessiongetAttribute("isNewCustomer"))booleanValue()) { %> <table> <tr> <td> <form method="post" action="OrderMaintenanceS"> <input type="submit" name="command" value="Add Order"> </form> </td> <td> <form method="post" action="OrderListjsp"> <input type="submit" name="command" value="List Orders"> </form> </td> </tr> </table> <%}%> </body>
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The following points are worth noting in the code above: Q Q Q entry The code to include the Colonia field if the system-wide property, jsw location, is MX The action for the form can be either Update or Insert depending on the value of the session isNewCustomer attribute If the form is for a new customer, the user cannot go to the orders pages until they have an
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