wrox professional c 2008 free download

... Architecture 3 Chapter 2: C# Basics 25 Chapter 3: Objects and Types 75 Chapter 4: Inheritance 101 Chapter 5: Arrays 121 Chapter 6: Operators and Casts 141 Chapter 7: Delegates and Events 177 Chapter ... Paradox PAL and Object PAL, Delphi, VBA, Visual Basic, C, C++, Java, and of course, C# He is currently a project coordinator and architect for a large financial services company in Nashville, ... conferences such as TechEd and Tech Days, and supports NET user groups with INETA Europe You can contact Christian via his Web sites, www.christiannagel.com and www.thinktecture.com Bill Evjen, Microsoft

Ngày tải lên: 12/08/2014, 23:23

... C# provides the checked and unchecked operators If you mark a block of code as checked , the CLR will enforce overflow checking, and throw an OverflowException if an overflow occurs Let ’ s change ... through the collection using a foreach statement: public class Program { HelloCollection helloCollection = new HelloCollection(); foreach (string s in helloCollection) { Console.WriteLine(s); ... (vect1==vect3)); Console.WriteLine(“vect2==vect3 returns “ + (vect2==vect3)); Trang 39 Console.WriteLine(); Console.WriteLine(“vect1!=vect2 returns “ + (vect1!=vect2)); Console.WriteLine(“vect1!=vect3

Ngày tải lên: 12/08/2014, 23:23

... string, Racer > racers = (from r in Formula1.GetChampions() from c in r.Cars select new { Car = c, Racer = r }).ToLookup(cr = > cr.Car, cr = > cr.Racer); if (racers.Contains(“Williams”)) ... EnhancedCustomer(); } This code assumes the existence of two classes, Customer and EnhancedCustomer The EnhancedCustomer class extends the Customer class First, you declare a Customer reference ... in your code by calling System .GC.Collect() The System.GC class is a NET class that represents the garbage collector, and the Collect() method initiates a garbage collection The GC class is

Ngày tải lên: 12/08/2014, 23:23

... public key token. All configuration files are checked to apply the correct version policy. The GAC and code bases specified in the configuration files are checked, followed by the application ... machine configuration file is located in %runtime_install_path%\config\ Machine.config . Publisher policy files can be used by a component creator to specify that a shared assembly is compatible ... you select Applications on the left side, and then select Action Add, you can choose a .NET application to configure. If the Client.exe application does not show up with the list, click the

Ngày tải lên: 12/08/2014, 23:23

... AddCourse(Course course) { SqlConnection connection = new SqlConnection( Properties.Settings.Default.CourseManagementConnectionString); SqlCommand courseCommand = connection.CreateCommand(); ... catch and do the rollback inside the catch using System; using System.Data.SqlClient; using System.Diagnostics; namespace Wrox.ProCSharp.Transactions{ public class CourseData { public void ... transaction: if the method succeeds, the success bit is set, so the transaction can commit If an exception happens, the transaction is aborted (continued) Trang 6 connection.Open(); try { courseCommand.Parameters.AddWithValue(“@Number”,

Ngày tải lên: 12/08/2014, 23:23

... string select = “SELECT ContactName,CompanyName FROM Customers”; SqlConnection conn = new SqlConnection(source); The following code introduces the SqlDataAdapter class, which is used to place data ... Customers”; SqlConnection conn = new SqlConnection(source); conn.Open(); SqlCommand cmd = new SqlCommand(select , conn); SqlDataReader aReader = cmd.ExecuteReader(); while(aReader.Read()) Console.WriteLine(“’{0}’ ... of each column in a DataTable object: foreach (DataRow row in ds.Tables[“Customers”].Rows ) { foreach ( DataColumn dc in ds.Tables[“Customers”].Columns ) { (continued) c26.indd 869c26.indd

Ngày tải lên: 12/08/2014, 23:23

... }} The form consists of the getData button, which when clicked calls the getData _ Click() method shown in the example code This constructs a SqlConnection object, using the ConnectionStrings ... IListSource interface Components that implement the IList interface Any generic collection class or object derived from a generic collection class The following sections give an example of each of ... EmployeeID column and a generated Name column, which is used when rendering the ComboBox :using (SqlConnection con = new SqlConnection ( ConfigurationSettings.ConnectionStrings[“northwind”].ConnectionString

Ngày tải lên: 12/08/2014, 23:23

... namespace Wrox.ProCSharp.AddIns{ [AddInContract] public interface ICalculatorContract : IContract { IListContract < IOperationContract > GetOperations(); double Operate(IOperationContract ... CalculatorViewToContractAddInAdapter : ContractBase, ICalculatorContract { private Calculator view; public CalculatorViewToContractAddInAdapter(Calculator view) { this.view = view; } public IListContract ... private ContractHandle handle; public IOperationContract Contract { get; private set; } public OperationContractToViewHostAdapter(IOperationContract contract) (continued) Trang 32 The class CalculatorContractToViewHostAdapter

Ngày tải lên: 12/08/2014, 23:23

... receive The following code fragment uses the UdpClient class to send a message to an echo service A server with an echo service running accepts TCP or UDP connections on port 7 The echo service ... protocol of choice because it offers guaranteed delivery, error correction, and buffering The TcpClient class encapsulates a TCP connection and provides a number of properties to regulate the connection, ... listens for incoming TCP connections with the Start() method When a connection request arrives, you can use the AcceptSocket() method to return a socket for communication with the remote machine, or

Ngày tải lên: 12/08/2014, 23:23

... serviceDSML ActiveDirectory DirectoryConnection DirectoryConnection is the base class of all the connection classes that can be used to define the connection to the directory service The classes ... local list of contacts by using either the ContactManager .CreateContact() or CreateContactAsync() method, or PeerName objects by using the GetContact() method You can remove contacts represented ... PrincipalCollection The PrincipalCollection contains a group of Principal objects; for example, the Members property from the GroupPrincipal class returns a PrincipalCollection object PrincipalSearcher

Ngày tải lên: 12/08/2014, 23:23

... sit amet, consectetur adipiscing elit Fusce convallis magna non dolor sit amet, consectetur adipiscing elit Fusce convallis magna non dolor sit amet, consectetur adipiscing elit Fusce convallis ... amet, consectetur adipiscing elit Fusce convallis magna non dolor sit amet, consectetur adipiscing elit Fusce convallis magna non Fusce convallis magna non dolor sit amet, consectetur adipiscing ... amet, consectetur adipiscing elit Fusce convallis magna non dolor sit amet, consectetur adipiscing elit Fusce convallis magna non Fusce convallis magna non dolor sit amet, consectetur adipiscing

Ngày tải lên: 31/10/2022, 18:54

... Use of Connection Objects 199 Using the Connection String in the Connection Constructor 199 Displaying Connection Information 199 Connecting to SQL Server Express with OleDbConnection ... application developed using C# 2008 As you work your way through this book, you get a chance to explore the concepts covered by creating sample applications in “Try It Out” sections, which will ... CHAPTER 10 Making Connections 189 Introducing the Data Provider Connection Classes 189 Connecting to SQL Server Express with SqlConnection 190 Try It Out: Using SqlConnection 190 How It

Ngày tải lên: 08/08/2014, 18:21

... RDBMS removes redundancy, inconsistency cannot occur • Data integrity: Data values stored in the database must satisfy certain types of con-sistency constraints (We’ll discuss this benefit in ... access • Transaction processing: A transaction is a sequence of database operations that represents a logical unit of work In RDBMSs, a transaction either commits all thechanges or rolls back ... few hundred dollars. In fact, if you own a licensed version of Microsoft Office Professional, you’realready a licensed owner of Microsoft Access, which is one of the most commonlyand widely used

Ngày tải lên: 08/08/2014, 18:21

... Characters Wildcard Description % Any combination of characters Where FirstName LIKE 'Mc%' selects all rows where the FirstName column equals McDonald, McBadden, McMercy, and so on. _ Any one character ... 5-3.Selecting specific columnsUsing the WHERE Clause Queries can have WHEREclauses The WHEREclause allows you to specify criteria for ing rows This clause can be complex, but we’ll stick to a simple ... When you selectcolumns you don’t need, you waste resources To explicitly select columns, enter the col- umn names after the SELECTkeyword as shown in the following query and click Execute Figure

Ngày tải lên: 08/08/2014, 18:21

... rolled back so that the accounts are maintained in a consistent state. Under no circumstances should money be deducted from the checking account but not added to the savings account (or vice versa)—at ... savings account. This involves two operations: deducting money from the checking account and adding it to the savings account. Both must succeed together and be committed to the accounts, or ... transactions occurring with your bank accounts. By using a transaction, both the operations, namely debit and credit, can be guaranteed to succeed or fail together. So both accounts remain in a con-

Ngày tải lên: 08/08/2014, 18:21

... connection conn = new OdbcConnection(connString); conn.Open(); Trang 7// execute the queryOdbcCommand cmd = new OdbcCommand(sql, conn); reader = cmd.ExecuteReader(); // display output headerConsole.WriteLine( ... "; Trang 13// create connectionSqlConnection conn = new SqlConnection(connString);try {// open connectionconn.Open(); Console.WriteLine("Connection opened."); }catch (SqlException e) {// ... Main(){ // create connectionSqlConnection conn = new SqlConnection(@" Console.WriteLine("Connection opened."); Trang 23// display connection propertiesConsole.WriteLine("Connection

Ngày tải lên: 08/08/2014, 18:21

... selectcompanyname,contactnamefrom customerswherecontactname like 'M%' "; // create connectionSqlConnection conn = new SqlConnection(connString); Trang 11try{// open connectionconn.Open();// create ... @"selectproductname,unitprice,unitsinstock,discontinuedfrom products "; // create connectionSqlConnection conn = new SqlConnection(connString);try {// open connectionconn.Open(); // create commandSqlCommand cmd = new SqlCommand(sql, ... selectcontactname,contacttitlefrom customerswherecontactname like 'M%' "; // create connectionSqlConnection conn = new SqlConnection(connString); try{conn.Open(); SqlCommand cmd = new SqlCommand(sql,

Ngày tải lên: 08/08/2014, 18:21

... // create connectionSqlConnection conn = new SqlConnection(connString); try{// create data adapterSqlDataAdapter da = new SqlDataAdapter();da.SelectCommand = new SqlCommand(qry, conn);// create ... create connectionSqlConnection conn = new SqlConnection(connString);try {// create data adapterSqlDataAdapter da = new SqlDataAdapter();da.SelectCommand = new SqlCommand(sql, conn);// create and ... create connectionSqlConnection conn = new SqlConnection(connString); try{// create data adapterSqlDataAdapter da = new SqlDataAdapter(); da.SelectCommand = new SqlCommand(qry, conn); // create and

Ngày tải lên: 08/08/2014, 18:21

... controls accord-ingly to account for the user resizing the form This technique was very code heavy and not so easy to implement With Visual Studio 2005 came two new properties, Anchor and Dock, ... translated into CPU-specific instructions for the processor on the PC running the web application Understanding the Visual Studio 2008 Web Site Types Visual Studio 2008 offers various ways of creating ... fromhttp://to http://localhost/Chapter15, which indicates that you are going to create a website under IIS with the name Chapter15 Click OK Now navigate to Solution Explorer so you can see what components

Ngày tải lên: 08/08/2014, 18:21

... released and a control has the focus. MouseClick Occurs only when a control is being clicked by the mouse. MouseDoubleClick Occurs when a control gets double-clicked by the mouse. MouseDown Occurs when ... 16-6.button5_Click()// create connectionSqlConnection conn = new SqlConnection(@" data source = \sqlexpress; integrated security = true; database = northwnd "); // create commandSqlCommand cmd = conn.CreateCommand(); ... loader.ExecuteInsertImages(i); }}catch (SqlException ex){ Console.WriteLine(ex.ToString()); }finally{loader.CloseConnection(); }}void OpenConnection(){ // create connectionconn = new SqlConnection(@"

Ngày tải lên: 08/08/2014, 18:21