《解剖PetShop》之六：PetShop之表示层设计

<%@ page autoeventwireup="true" language="c#" masterpagefile="~/masterpage.master" title="products" inherits="petshop.web.products" codefile="~/products.aspx.cs" %>

[aspnethostingpermission(securityaction.inheritancedemand, 
level=aspnethostingpermissionlevel.minimal), 
aspnethostingpermission(securityaction.linkdemand, 
level=aspnethostingpermissionlevel.minimal)]
public interface ihttphandler
{
  void processrequest(httpcontext context);
  bool isreusable { get; }
}

public partial class products : system.web.ui.page 
{
 protected void page_load(object sender, eventargs e) 
 {
  //get page header and title
  page.title = webutility.getcategoryname(request.querystring["categoryid"]);
 }
}

public partial class checkout : system.web.ui.page

protected void wzdcheckout_finishbuttonclick(object sender, wizardnavigationeventargs e) {
 if (profile.shoppingcart.cartitems.count > 0) {
  if (profile.shoppingcart.count > 0) {

   // display ordered items
   cartlistordered.bind(profile.shoppingcart.cartitems);

   // display total and credit card information
   ltltotalcomplete.text = ltltotal.text;
   ltlcreditcardcomplete.text = ltlcreditcard.text;

   // create order
   orderinfo order = new orderinfo(int.minvalue, datetime.now, user.identity.name, getcreditcardinfo(), billingform.address, shippingform.address, profile.shoppingcart.total, profile.shoppingcart.getorderlineitems(), null);

   // insert
   order neworder = new order();
   neworder.insert(order);

   // destroy cart
   profile.shoppingcart.clear();
   profile.save();
  }
 }
 else {
  lblmsg.text = "<p><br>can not process the order. your cart is empty.</p><p class=signuplabel><a class=linknewuser href=default.aspx>continue shopping</a></p>";
  wzdcheckout.visible = false;
 }
}

public class customgrid : repeater…
//static constants
 protected const string html1 = "<table cellpadding=0 
cellspacing=0><tr><td colspan=2>";
 protected const string html2 = "</td></tr><tr><td class=paging align=left>";
 protected const string html3 = "</td><td align=right class=paging>";
 protected const string html4 = "</td></tr></table>";
 private static readonly regex rx = new regex(@"^&page=\d+", 
regexoptions.compiled);
 private const string link_prev = "<a href=?page={0}>< previous</a>";
 private const string link_more = "<a href=?page={0}>more ></a>";
private const string key_page = "page";
 private const string comma = "?";
 private const string amp = "&";

override protected void render(htmltextwriter writer) {

  //check there is some data attached
  if (itemcount == 0) {
   writer.write(emptytext);
   return;
  }
  //mask the query
  string query = context.request.url.query.replace(comma, amp);
  query = rx.replace(query, string.empty);
  // write out the first part of the control, the table header
  writer.write(html1);
  // call the inherited method
  base.render(writer);
  // write out a table row closure
  writer.write(html2);
  //determin whether next and previous buttons are required
  //previous button?
  if (currentpageindex > 0)
   writer.write(string.format(link_prev, (currentpageindex - 1) + query));
  //close the table data tag
  writer.write(html3);

  //next button?
  if (currentpageindex < pagecount)
   writer.write(string.format(link_more, (currentpageindex + 1) + query));

  //close the table
  writer.write(html4);
 }

public virtual object datasource
{
  get {… }
  set
  {
   if (((value != null) && !(value is ilistsource)) && !(value is ienumerable))
   {
     throw new argumentexception(sr.getstring("invalid_datasource_type", new object[] { this.id }));
   }
   this.datasource = value;
   this.ondatapropertychanged();
  }
}

private ilist datasource;
private int itemcount;

override public object datasource {
 set {
 //this try catch block is to avoid issues with the vs.net designer
  //the designer will try and bind a datasource which does not derive from ilist
  try {
   datasource = (ilist)value;
   itemcount = datasource.count;
  }
  catch {
   datasource = null;
   itemcount = 0;
  }
 }
}

override protected void ondatabinding(eventargs e) {

 //work out which items we want to render to the page
 int start = currentpageindex * pagesize;
 int size = math.min(pagesize, itemcount - start);

 ilist page = new arraylist();
 //add the relevant items from the datasource
 for (int i = 0; i < size; i++)
  page.add(datasource[start + i]);

 //set the base objects datasource
 base.datasource = page;
 base.ondatabinding(e);
}

public partial class shoppingcartcontrol : system.web.ui.usercontrol
  
 protected void page_prerender(object sender, eventargs e) {
  if (!ispostback) {
   bindcart();    
  }
 }
 private void bindcart() {

  icollection<cartiteminfo> cart = profile.shoppingcart.cartitems;
  if (cart.count > 0) {
   repshoppingcart.datasource = cart;
   repshoppingcart.databind();
   printtotal();
   plhtotal.visible = true;
  }
  else {
   repshoppingcart.visible = false;
   plhtotal.visible = false;
   lblmsg.text = "your cart is empty.";
  }
 }

<petshopcontrol:shoppingcartcontrol id="shoppingcartcontrol1" runat="server"></petshopcontrol:shoppingcartcontrol>

public interface ipetshopprofileprovider 
{ 
 addressinfo getaccountinfo(string username, string appname); 
 void setaccountinfo(int uniqueid, addressinfo addressinfo);
 ilist<cartiteminfo> getcartitems(string username, string appname, 
bool isshoppingcart);
 void setcartitems(int uniqueid, icollection<cartiteminfo> cartitems, 
bool isshoppingcart);
 void updateactivitydates(string username, bool activityonly, string appname);
 int getuniqueid(string username, bool isauthenticated, bool ignoreauthenticationtype,
 string appname);
 int createprofileforuser(string username, bool isauthenticated, string appname);
 ilist<string> getinactiveprofiles(int authenticationoption, 
datetime userinactivesincedate, string appname);
 bool deleteprofile(string username, string appname); 
 ilist<customprofileinfo> getprofileinfo(int authenticationoption, 
string usernametomatch, datetime userinactivesincedate, string appname, 
out int totalrecords);
}

public sealed class dataaccess {

 private static readonly string profilepath = configurationmanager.appsettings["profiledal"];
 public static petshop.iprofiledal.ipetshopprofileprovider createpetshopprofileprovider() {
 string classname = profilepath + ".petshopprofileprovider";
 return (petshop.iprofiledal.ipetshopprofileprovider)assembly.load(profilepath).createinstance(classname);
 }
}

private static readonly ipetshopprofileprovider dal = dataaccess.createpetshopprofileprovider();

<profile automaticsaveenabled="false" defaultprovider="shoppingcartprovider">
 <providers>
 <add name="shoppingcartprovider" connectionstringname="sqlprofileconnstring" type="petshop.profile.petshopprofileprovider" applicationname=".net pet shop 4.0"/>
 <add name="wishlistprovider" connectionstringname="sqlprofileconnstring" type="petshop.profile.petshopprofileprovider" applicationname=".net pet shop 4.0"/>
 <add name="accountinfoprovider" connectionstringname="sqlprofileconnstring" type="petshop.profile.petshopprofileprovider" applicationname=".net pet shop 4.0"/>
 </providers>
 <properties>
 <add name="shoppingcart" type="petshop.bll.cart" allowanonymous="true" provider="shoppingcartprovider"/>
 <add name="wishlist" type="petshop.bll.cart" allowanonymous="true" provider="wishlistprovider"/>
 <add name="accountinfo" type="petshop.model.addressinfo" allowanonymous="false" provider="accountinfoprovider"/>
 </properties>
</profile>

<add key="profiledal" value="petshop.sqlprofiledal"/>

public partial class shoppingcart : system.web.ui.page {

 protected void page_preinit(object sender, eventargs e) {
  if (!ispostback) {
   string itemid = request.querystring["additem"];
   if (!string.isnullorempty(itemid)) {
    profile.shoppingcart.add(itemid);
    profile.save();
    // redirect to prevent duplictations in the cart if user hits "refresh"
    response.redirect("~/shoppingcart.aspx", true);
   }
  }
 }
}

public override membershipuser createuser(string username, string password, string email, string passwordquestion, string passwordanswer, bool isapproved, object provideruserkey, out membershipcreatestatus status)
{
  membershipuser user1;
  //前面的代码略;
  try
  {
   sqlconnectionholder holder1 = null;
   try
   {
     holder1 = sqlconnectionhelper.getconnection(this._sqlconnectionstring, true);
     this.checkschemaversion(holder1.connection);
     datetime time1 = this.roundtoseconds(datetime.utcnow);
     sqlcommand command1 = new sqlcommand("dbo.aspnet_membership_createuser", holder1.connection);
     command1.commandtimeout = this.commandtimeout;
     command1.commandtype = commandtype.storedprocedure;
     command1.parameters.add(this.createinputparam("@applicationname", sqldbtype.nvarchar, this.applicationname));
     command1.parameters.add(this.createinputparam("@username", sqldbtype.nvarchar, username));
     command1.parameters.add(this.createinputparam("@password", sqldbtype.nvarchar, text2));
     command1.parameters.add(this.createinputparam("@passwordsalt", sqldbtype.nvarchar, text1));
     command1.parameters.add(this.createinputparam("@email", sqldbtype.nvarchar, email));
     command1.parameters.add(this.createinputparam("@passwordquestion", sqldbtype.nvarchar, passwordquestion));
     command1.parameters.add(this.createinputparam("@passwordanswer", sqldbtype.nvarchar, text3));
     command1.parameters.add(this.createinputparam("@isapproved", sqldbtype.bit, isapproved));
     command1.parameters.add(this.createinputparam("@uniqueemail", sqldbtype.int, this.requiresuniqueemail ? 1 : 0));
     command1.parameters.add(this.createinputparam("@passwordformat", sqldbtype.int, (int) this.passwordformat));
     command1.parameters.add(this.createinputparam("@currenttimeutc", sqldbtype.datetime, time1));
     sqlparameter parameter1 = this.createinputparam("@userid", sqldbtype.uniqueidentifier, provideruserkey);
     parameter1.direction = parameterdirection.inputoutput;
     command1.parameters.add(parameter1);
     parameter1 = new sqlparameter("@returnvalue", sqldbtype.int);
     parameter1.direction = parameterdirection.returnvalue;
     command1.parameters.add(parameter1);
     command1.executenonquery();
     int num3 = (parameter1.value != null) ? ((int) parameter1.value) : -1;
     if ((num3 < 0) || (num3 > 11))
     {
      num3 = 11;
     }
     status = (membershipcreatestatus) num3;
     if (num3 != 0)
     {
      return null;
     }
     provideruserkey = new guid(command1.parameters["@userid"].value.tostring());
     time1 = time1.tolocaltime();
     user1 = new membershipuser(this.name, username, provideruserkey, email, passwordquestion, null, isapproved, false, time1, time1, time1, time1, new datetime(0x6da, 1, 1));
   }
   finally
   {
     if (holder1 != null)
     {
      holder1.close();
      holder1 = null;
     }
   }
  }
  catch
  {
   throw;
  }
  return user1;
}

public override membershipuser createuser(string username, string password, string email, string passwordquestion, string passwordanswer, bool isapproved, object userid, out membershipcreatestatus status) {
 //前面的代码略;
 //create connection
 oracleconnection connection = new oracleconnection(oraclehelper.connectionstringmembership);
 connection.open();
 oracletransaction transaction = connection.begintransaction(isolationlevel.readcommitted);
 try {
 datetime dt = datetime.now;
 bool isusernew = true;

 // step 1: check if the user exists in the users table: create if not 
 int uid = getuserid(transaction, applicationid, username, true, false, dt, out isusernew);
 if(uid == 0) { // user not created successfully!
 status = membershipcreatestatus.providererror;
 return null;
 }
 // step 2: check if the user exists in the membership table: error if yes.
 if(isuserinmembership(transaction, uid)) {
 status = membershipcreatestatus.duplicateusername;
 return null;
 }
 // step 3: check if email is duplicate
 if(isemailinmembership(transaction, email, applicationid)) {
 status = membershipcreatestatus.duplicateemail;
 return null;
 }
 // step 4: create user in membership table  
 int pformat = (int)passwordformat;
 if(!insertuser(transaction, uid, email, pass, pformat, salt, "", "", isapproved, dt)) {
 status = membershipcreatestatus.providererror;
 return null;
 }
 // step 5: update activity date if user is not new
 if(!isusernew) {
 if(!updatelastactivitydate(transaction, uid, dt)) {
 status = membershipcreatestatus.providererror;
 return null;
 }
 }
 status = membershipcreatestatus.success;
 return new membershipuser(this.name, username, uid, email, passwordquestion, null, isapproved, false, dt, dt, dt, dt, datetime.minvalue);
 }
 catch(exception) {
 if(status == membershipcreatestatus.success)
 status = membershipcreatestatus.providererror;
 throw;
 }
 finally {
 if(status == membershipcreatestatus.success)
 transaction.commit();
 else
 transaction.rollback();
 connection.close();
 connection.dispose();
 }
}

private static bool insertuser(oracletransaction transaction, int userid, string email, string password, int passformat, string passsalt, string passquestion, string passanswer, bool isapproved, datetime dt) {

 string insert = "insert into membership (userid, email, password, passwordformat, passwordsalt, passwordquestion, passwordanswer, isapproved, createddate, lastlogindate, lastpasswordchangeddate) values (:userid, :email, :pass, :passwordformat, :passwordsalt, :passwordquestion, :passwordanswer, :isapproved, :cdate, :lldate, :lpcdate)";
 oracleparameter[] insertparms = { new oracleparameter(":userid", oracletype.number, 10), new oracleparameter(":email", oracletype.varchar, 128), new oracleparameter(":pass", oracletype.varchar, 128), new oracleparameter(":passwordformat", oracletype.number, 10), new oracleparameter(":passwordsalt", oracletype.varchar, 128), new oracleparameter(":passwordquestion", oracletype.varchar, 256), new oracleparameter(":passwordanswer", oracletype.varchar, 128), new oracleparameter(":isapproved", oracletype.varchar, 1), new oracleparameter(":cdate", oracletype.datetime), new oracleparameter(":lldate", oracletype.datetime), new oracleparameter(":lpcdate", oracletype.datetime) };
 insertparms[0].value = userid;
 insertparms[1].value = email;
 insertparms[2].value = password;
 insertparms[3].value = passformat;
 insertparms[4].value = passsalt;
 insertparms[5].value = passquestion;
 insertparms[6].value = passanswer;
 insertparms[7].value = oraclehelper.orabit(isapproved);
 insertparms[8].value = dt;
 insertparms[9].value = dt;
 insertparms[10].value = dt;

 if(oraclehelper.executenonquery(transaction, commandtype.text, insert, insertparms) != 1)
 return false;
 else
 return true;
}

<membership defaultprovider="sqlmembershipprovider">
 <providers>
 <add name="sqlmembershipprovider" type="system.web.security.sqlmembershipprovider" connectionstringname="sqlmembershipconnstring" applicationname=".net pet shop 4.0" enablepasswordretrieval="false" enablepasswordreset="true" requiresquestionandanswer="false" requiresuniqueemail="false" passwordformat="hashed"/>
 </providers>
</membership>

<membership defaultprovider="oraclemembershipprovider">
 <providers>
 <clear/>
 <add name="oraclemembershipprovider" 
 type="petshop.membership.oraclemembershipprovider" 
 connectionstringname="oramembershipconnstring" 
 enablepasswordretrieval="false" 
 enablepasswordreset="false" 
 requiresuniqueemail="false" 
 requiresquestionandanswer="false" 
 minrequiredpasswordlength="7" 
 minrequirednonalphanumericcharacters="1" 
 applicationname=".net pet shop 4.0" 
 hashalgorithmtype="sha1" 
 passwordformat="hashed"/>
 </providers>
</membership>

<asp:login id="login" runat="server" createuserurl="~/newuser.aspx" skinid="login" failuretext="login failed. please try again.">
</asp:login>

<asp:createuserwizard id="createuserwizard" runat="server" createuserbuttontext="sign up" invalidpassworderrormessage="please enter a more secure password." passwordregularexpressionerrormessage="please enter a more secure password." 
requireemail="false" skinid="newuser">
<wizardsteps>
   <asp:createuserwizardstep id="createuserwizardstep1" runat="server">
 </asp:createuserwizardstp>
 </wizardsteps>
</asp:createuserwizard>

<%@ master language="c#" autoeventwireup="true" codefile="masterpage.master.cs" inherits="petshop.web.masterpage" %>

public partial class masterpage : system.web.ui.masterpage {

 private const string header_prefix = ".net pet shop :: {0}";

 protected void page_prerender(object sender, eventargs e) { 
  ltlheader.text = page.header.title;
  page.header.title = string.format(header_prefix, page.header.title);   
 }
 protected void btnsearch_click(object sender, eventargs e) {
  webutility.searchredirect(txtsearch.text); 
 }
}

<%@ page language="c#" masterpagefile="~/masterpage.master" autoeventwireup="true" codefile="checkout.aspx.cs" inherits="petshop.web.checkout" title="check out" %>

<%@ master language="c#" master="parent.master"%>

void page_preinit(object sender, eventargs e)
{
 this.masterpagefile = "~/newmaster.master";
}