c and net frameworkbài 5 windows application

... performance of your ASP.NET applications This chapter looks at some of the advanced caching capabilities provided by ASP.NET, including the SQL cache invalidation feature which is part of ASP.NET 3.5 ... the SqlDataSource server control, ASP.NET 3.5 includes the AccessDataSource, XmlData-Source, ObjectDataXmlData-Source, SiteMapDataXmlData-Source, and the new LinqDataSource server control You use ... Parts are constructed on the page — including their appearance and layout ❑ Chapter 18, ‘‘HTML and CSS Design with ASP.NET.’’: A lot of focus on building a CSS-based Web application was placed on

Ngày tải lên: 05/07/2014, 18:20

... special character code In combination, the backslash and spe-cial character code are an escape sequence For example, '\n' represents anewline, and '\t' represents a tab Since a backslash indicates ... the necessary code logic when itdoesn’t com-A D V com-A N C E D T O P I C Checked and Unchecked Conversions C# provides special keywords for marking a code block to indicate whatshould happen ... occurs at runtime.The C# compiler provides a command-line option for changing thedefault checked behavior from unchecked to checked C# also supports anunchecked block that truncates the data instead

Ngày tải lên: 12/08/2014, 16:21

... inheritance is such a core part of exception handling 10 Exception Handling DISCUSSED using the try/catch/finally blocks for standard exception handling In that chapter, the catch block always caught ... public static void Main() { Contact[] contacts = new Contact[6]; contacts[0] = new Contact( "Dick", "Traci", "123 Main St., Spokane, WA 99037", "123-123-1234"); // // Classes are cast implicitly ... particularly large garbage collection cycle is necessary In order to reduce the likelihood of a garbage collection cycle at an inopportune time, however, the System.GC object includes a Collect()

Ngày tải lên: 12/08/2014, 16:21

... Similarly, locking a connection so that alldatabase calls are synchronized places a significantly lower ceiling on scal-ability Each pattern has its costs and benefits, and the correct choicedepends ... releasing the lock on _Sync2 This sets the stage forthe deadlock The deadlock actually occurs if both Thread 1 and Thread 2successfully acquire their initial locks (_Sync1 and _Sync2, respectively)before ... on which no one will block, except for theclass that has access to it Declaring Fields as volatile On occasion, the compiler may optimize code in such a way that theinstructions do not occur in

Ngày tải lên: 12/08/2014, 16:21

... (CIL). A second compilation step occurs, generally at execution time, converting the CIL to machine code the processor can understand Conversion to machine code is still not cient for code execution, ... and designed to provide a Windows-, Linux-, and compatible version of the CLI specification and C# compiler UNIX-Source code and binaries are available at www.go-mono.com. Continues Trang 15Although ... betweenapplication domains, so static constructors run for each application domain,and assuming a single thread per application domain, there is no need tosynchronize the static data because each application

Ngày tải lên: 12/08/2014, 16:22

... number (555) 555-1212 is a phone number 555-555-1212 is a phone number 5555551212 is a phone number 01111 is a zip code 118 Chapter Searching, Modifying, and Encoding Text 01111-1111 is a zip code ... (IsZip(s)) Console.WriteLine(s + " is a zip code"); else Console.WriteLine(s + " is unknown"); } Build and run the project The output should match the following: (555) 555-1212 is a phone (555) 555-1212 ... to and from UTF-32 encoding Unicode UTF-32 encoding Unicode UTF-16 encoding represents Unicode characters as sequences of 16-bit integers You can use the UnicodeEncoding class to convert characters

Ngày tải lên: 12/08/2014, 20:22

... performance implications ofusing generic collections, complete Practice 3 as well Q Practice 1 Write an application that creates an instance of each of the built-ingeneric collection classes, ... Public Class Products2 Inherits StringDictionary End Class Trang 30Which declaration of the Product class works correctly? public string productName; public Product(string _productName) Public Class ... collections, complete Practice 2 as well Q Practice 1 Write an application that creates an instance of each of the built-inspecialized collection classes, adds items to each of the collections, and then

Ngày tải lên: 12/08/2014, 20:22

... You can also edit system icons or load saved icons using the constructors built into the Icon class Once you create an instance of the Icon class, call Icon.ToBitmap to create a Bitmap object ... System.Drawing.Graphics class To create an instance of this class, you typically call a control’s CreateGraphics method Alternatively, as discussed in Lesson 2, you can create a Graphics object based on ... 26// C#Color[] colors = { Color.Red, Color.Orange, Color.Yellow, Color.Green, Color.Blue, Color.Indigo, Color.Violet, Color.DarkRed, Color.DarkOrange, Color.DarkSalmon, Color.DarkGreen, Color.DarkBlue,

Ngày tải lên: 12/08/2014, 20:22

... Domains and Services This chapter covers two distinct topics: application domains and services Application domains enable you to call external assemblies with optimal efficiency and security Services ... ASP.NET applications on a single Web server, all applications can run withinthe same process However, ASP.NET creates a separate application domain for eachapplication, preventing each application ... with full trust can bypass NET Framework security checks by callingnative code, which in turn can gain unrestricted access to anything within the process(and thus within any application domain)

Ngày tải lên: 12/08/2014, 20:22

... right-click Add 2 In the list, click your assembly and then click OK Alternatively, you can click Other and select your assembly 3 Under My Computer\Applications, right-click your assembly and ... 36Lesson 1: Logging Application State 41311 Right-click Rollback and then click Add Custom Action In the Select Item In Project dialog box, double-click Application Folder, click Primary Output ... Hashtable() ci.Install(actions) ci.Commit(actions) // C# CustomInstaller ci = new CustomInstaller(); IDictionary actions = new Hashtable(); ci.Install(actions); ci.Commit(actions); You can also

Ngày tải lên: 12/08/2014, 20:22

... attacker successfully bypassing the check Trang 36Figure 11-9 Demand checks all callers for a permissionIMPORTANT Demand and LinkDemand Check the Caller Demand and LinkDemand do not check the current ... Use the Code Access Security Policy Tool You can use the Code Access Security Policy tool (Caspol.exe, located in %Windir%\Microsoft.NET\Framework\v2.0.50727\) to examine and modify Machine-, ... AssembliesUnrestricted Access To File-Based Storage option Click OK and then click Next 8 On the Completing The Wizard page, click Finish. 9 Open a command prompt and run the command \\127.0.0.1\c$\ListPermis-sions.exe

Ngày tải lên: 12/08/2014, 20:22

... DirectorySecurity = Directory.GetAccessControl(dir) Trang 21A A generic Collection object containing AccessRule objectsB A generic Collection object containing FileSystemAccessRule objects C An ... your application functioned correctly 1 Create a new Console application in either Visual Basic or C#. 2 Add the System.Security.AccessControl, System.Security.Policy, System.Security.Prin-cipal, ... FileSystemRights.Read, AccessControlType.Allow)) Directory.SetAccessControl(dir, ds) Trang 18Lesson 2: Using Access Control Lists 559To remove an access rule, simply replace AddAccessRule with RemoveAccessRule.

Ngày tải lên: 12/08/2014, 20:22

... that accesses a COM object.Handle any exceptions that might arise Q Practice 2 Create a wrapper class for a COM object so that you can access itdirectly from managed code Q Practice 3 Create ... should complete at least Practices 1 and 2 If you have the resourcesand knowledge to create Win32 applications, complete Practices 3 and 4 as well Q Practice 1 Create a NET Framework application ... bly, and call Type.GetConstructor to create an instance of ConstructorInfo Then you can create an instance of the type by calling ConstructorInfo.Invoke To call a method, call Type.GetMethod to create

Ngày tải lên: 12/08/2014, 20:22

... schema. con-D Incorrect: Xcacls.exe is used to configure access control lists (ACLs) on files It cannot be used to create a class that conforms to an XML schema. 4 Correct Answer: B A Incorrect: ... transactions. C Correct: Stacks provide a LIFO collection, which exactly meets your requirements You can declare the Stack class generically, using your custom DBTransaction class. D Incorrect: ... Case Scenario 1: Using Collections 1 You can create collection properties for Crime and Convict to store collections that contain multiple Evidence and Behavior instances. 2 There’s no particular

Ngày tải lên: 12/08/2014, 20:22

... CheckBoxAdmin_CheckedChanged(ByVal sender As Object, _ ByVal e As System.EventArgs) Handles CheckBoxAdmin.CheckedChanged 9. Run the page Notice that changing the CheckBox control has no effect Click Save ... Handles ButtonSave.Click 'VB Protected Sub CheckBoxAdmin_CheckedChanged(ByVal sender As Object, _ ByVal e As System.EventArgs) Handles CheckBoxAdmin.CheckedChanged Protected Sub ButtonSave_Click(ByVal ... PostBack to the server? CheckBox cause immediate PostBack to the server? CheckBox Quick check answers 1 The two types of Web server Button controls are submit and command buttons. 2 You can mask

Ngày tải lên: 12/08/2014, 20:22

... lit3py55t21z5v55vlm25s55: http://www.example.com/s(lit3py55t21z5v55vlm25s55)/orderform.aspx NOTE sessiOn state and cOOkies ASP.NET writes a cookie to the client’s machines to track their session This cookie ... Object, _ ByVal e As System.EventArgs) Handles Me.Load Application.Lock() Application("clicks") = CInt(Application("clicks")) + 1 Application.UnLock() LabelApplicationClicks.Text ... basic understanding of how you can affect application state management The following stages constitute the application life cycle of an ASP.NET application: 1 The life cycle of an ASP.NET application

Ngày tải lên: 12/08/2014, 20:22

... System.Web.Configuration.WebConfigurationManager.ConnectionStrings[ "ConnectionStringVendors"].ConnectionString; SqlConnection cnn = new SqlConnection(cnnStr); SqlCommand cmd = new SqlCommand("insert_vendor", ... System.Web.Configuration.WebConfigurationManager.ConnectionStrings[ "ConnectionStringVendors"].ConnectionString; SqlConnection cnn = new SqlConnection(cnnStr); SqlCommand cmd = new SqlCommand("insert_vendor", cnn); ... Page.ClientScript.RegisterClientScriptBlock is used to dynamically register Page.ClientScript.RegisterClientScriptBlock is used to dynamically register Page.ClientScript.RegisterClientScriptBlock client script from code.

Ngày tải lên: 12/08/2014, 20:22

... connection object The DbConnection class is an abstract class from which the provider-specific connection classes inherit The connection class hierarchy is shown in Figure 7-9 To create a connection, ... objects by using the Parameters.Add method of the Command object, as shown here: Trang 35Dim cmd As DbCommand = connection.CreateCommand() This code creates and confi gures a DbConnection object ... valid open connection to issue the command to the data store A DbConnection object can be passed into the DbCommand object’s constructor or attached to the DbCommand object’s Connection property

Ngày tải lên: 12/08/2014, 20:22

... ObjectDataSource. Caching Data You can tell ASP.NET to cache your ObjectDataSource control This will keep the data in memory between page calls This can increase performance and scalability of your applica-tion ... the cached data (and not call the underlying object) Trang 38Creating a Dataobject ClassThere are not too many restrictions on which objects you can use as the source of Object-DataSource controls ... same ADO.NET provider classes discussed in Chapter 7, “Using ADO.NET, XML, and LINQ with ASP.NET,” such as SqlClient, OracleClient, OleDb, and Odbc. Trang 39You configure the SqlDataSource control

Ngày tải lên: 12/08/2014, 20:22

... service contract. 3 Configure a service endpoint(s) 4 Host the service in an application. 5 Reference and call the service from a client application. As you can see, a WCF service application ... a WCF Service Application In this exercise, you create the WCF Service application project and defi ne the WCF service 1 Open Visual Studio and create a new WCF Service Application project using ... namespace of the service, how messages should be sent, callbacks, and related contract items There are multiple contract types in WCF, including service contract, operation contract, message contract,

Ngày tải lên: 12/08/2014, 20:22