beginning c 2008 databases from novice to professional

... & color not accurate spine = 0.9682" 512 page count Books for professionals By professionals đ Beginning C# 2008 Databases: From Novice to Professional Dear Reader, This book focuses ... Databases The eXperTs Voice đ in .neT Beginning C# 2008 Databases From Novice to Professional cyan MaGenTa yelloW Black panTone 123 c Vidya Vrat Agarwal and James Huddleston Ranga Raghuram, ... data to an 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,...

Ngày tải lên: 08/08/2014, 18:21

... specific character string matches a specified pattern. A pattern can be created by using a combination of regular characters and wildcard characters. During pattern matching, regular characters ... this case, book titles such as C# 2008: An Introduction,” Accelerated C# 2008, and Beginning C# 2008 Databases will be listed. ã _ (underscore): A single underscore represents any single character. ... prompted to save changes to items. 2. Again, click File ➤ Connect Object Explorer. In the Connect to Server dialog box, select <ServerName>\SQLEXPRESS as the server name and then click Connect. 3....

Ngày tải lên: 08/08/2014, 18:21

... Wildcard Characters Wildcard Description % Any combination of characters. Where FirstName LIKE 'Mc%' selects all rows where the FirstName column equals McDonald, McBadden, McMercy, ... 96. CHAPTER 6 ■ USING STORED PROCEDURES 101 9004ch06final.qxd 12/13/07 4:16 PM Page 101 9004ch06final.qxd 12/13/07 4:16 PM Page 118 // specify stored procedure to execute cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText ... click Execute. You should see the message “Com- mand(s) completed successfully” in the results window. create procedure sp_Orders_By_EmployeeId @employeeid int as select orderid, customerid from...

Ngày tải lên: 08/08/2014, 18:21

... 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 ... open the connection, you create a transaction. Note that transactions are con- nection specific. You can’t create a second transaction for the same connection before committing or rolling back the ... the following query and click Execute: SELECT Cust.CustomerID, OrderHeader.CustomerID, OrderHeader.SalesOrderID, OrderHeader.Status, Cust.CustomerType FROM Sales.Customer Cust, Sales.SalesOrderHeader OrderHeader WHERE...

Ngày tải lên: 08/08/2014, 18:21

... bold code to the try block of Listing 11-1. try { // open connection conn.Open(); // connect command to connection cmd.Connection = conn; Console.WriteLine("Connnected command to this connection."); } 2. ... Connection Constructor In the ConnectionSql project, you created the connection and specified the connection string in separate steps. Since you always have to specify a connection string, you can use ... {0}" , cmd.ExecuteScalar() ); } catch (SqlException ex) { Console.WriteLine(ex.ToString()); } finally { conn.Close(); Console.WriteLine("Connection Closed."); } } } } 3. Make CommandScalar...

Ngày tải lên: 08/08/2014, 18:21

... = @" select companyname, contactname from customers where contactname like 'M%' "; // create connection SqlConnection conn = new SqlConnection(connString); CHAPTER 12 ■ USING ... @" select * from employees "; // create connection SqlConnection conn = new SqlConnection(connString); try { conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(); // store Employees ... 243 9004ch12final.qxd 12/13/07 4:07 PM Page 243 // query string sql = @" select productname, unitprice, unitsinstock, discontinued from products "; // create connection SqlConnection conn...

Ngày tải lên: 08/08/2014, 18:21

... properties in ascending order by name from “a” to “z.” You can switch to the Alphabetical view by clicking the icon located at the second posi- tion from the left of the toolbar shown in the top of the ... ( @firstname, @lastname, @titleofcourtesy, @city, @country ) "; // create connection SqlConnection conn = new SqlConnection(connString); try { // create data adapter SqlDataAdapter da = new SqlDataAdapter(); da.SelectCommand ... spaced to create visual appeal and ease of accessibility. Consistency Your user inter face should exhibit a consistent design acr oss each for m in y our applica - tion. An inconsistent design can...

Ngày tải lên: 08/08/2014, 18:21

... source, message, and stack trace for the exception. With- out this specific catch clause, the generic catch clause will handle the exception. (Try commenting out this catch clause and reexecuting ... way to cause an ADO.NET exception. You specify the command is for a stored procedure call, but you don’t specify the stored procedure to call: // specify that a stored procedure is to be executed cmd.CommandType ... command SqlCommand cmd = conn.CreateCommand(); // specify that a stored procedure is to be executed cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "sp_Select_All_Employees"; try { //...

Ngày tải lên: 08/08/2014, 18:21

... i++) { loader.ExecuteInsertImages(i); } } catch (SqlException ex) { Console.WriteLine(ex.ToString()); } finally { loader.CloseConnection(); } } void OpenConnection() { // create connection conn = new SqlConnection(@" server ... the mouse to provide input to these applications. Whatever users do using input devices gets translated into events that are recognized and thus cause certain actions to occur. Clicking by using ... texttable "); ExecuteCommand(@" create table texttable ( textfile varchar(255), textdata varchar(max) ) "); } void OpenConnection() { // create connection conn = new SqlConnection(@" data source...

Ngày tải lên: 08/08/2014, 18:21

... 178–183 Odbc namespace, 177 OdbcCommand class, 177 OdbcConnection class, 183 OdbcDataAdapter class, 184 OdbcDataReader class, 177 OdbcError class, 177 OdbcParameter class, 177 OdbcTransaction class, ... Database Connectivity), 159 Odbc class, 186 ODBC data provider, 177–187 creating Console Application with, 184–186 creating ODBC data source, 178–183 ODBC data source, creating with ODBC data provider, ... name NorthwindEntitiesConnectionString in the App.config file, and then open the connection. EntityConnection connection = new EntityConnection("name=NorthwindEntitiesConnectionString"); connection.Open(); After...

Ngày tải lên: 08/08/2014, 18:21

... to use it to access databases from C# . You’ll even learn how to write stored procedures and call them from C# programs. You’ll learn much more besides. Our focus is always on fundamental concepts ... Next. CHAPTER 1 ■ GETTING OUR TOOLS 3 Figure 1-2. VCSE Welcome Figure 1-3. VCSE End-User License Agreement 777Xch01final.qxd 11/18/06 3:45 PM Page 3 Beginning C# 2005 Databases: From Novice to Professional Copyright ... Seymour Copy Edit Manager: Nicole Flores Copy Editors: Nicole Abramowitz, Liz Welch Assistant Production Director: Kari Brooks-Copony Production Editor: Janet Vail Compositor: Linda Weidemann, Wolf Creek...

Ngày tải lên: 09/08/2014, 14:20

... of connectivity before you reach the data source. Just as OLE DB is there to connect to a large number of data sources, an older data access technol- ogy, ODBC, is still there to connect to even ... Right-click the Program.cs file and rename it to SqlServerProvider.cs. When prompted to rename all references to Program, you can click either Yes or No. 4. Since you’ll be creating this example from ... @" select * from employees "; // Declare connection and data reader variables SqlConnection conn = null; SqlDataReader reader = null; try { // Open connection conn = new SqlConnection(connString); conn.Open(); // Execute...

Ngày tải lên: 09/08/2014, 14:20

... command’s Connection property that they become associated: // connect command to connection cmd.Connection = conn; Console.WriteLine("Connected command to this connection."); The actual ... and Connection Classes Data Pro vider Namespace Connection Class ODBC System.Data.Odbc OdbcConnection OLE DB System.Data.OleDb OleDbConnection Or acle System.Data.OracleClient OracleConnection SQL ... connection conn.Open(); // connect command to connection cmd.Connection = conn; Console.WriteLine("Connnected command to this connection."); } 2. Run it with Ctrl+F5. You should see the...

Ngày tải lên: 09/08/2014, 14:20

... @" select contactname from customers "; // create connection SqlConnection conn = new SqlConnection(connString); try { // open connection conn.Open(); // create command SqlCommand cmd = new ... Add a new C# Console Application project named T ypedAccessors to your Chapter07 solution. Rename Program.cs to TypedAccessors.cs. 2. Replace the code in TypedAccessors.cs with the code in Listing ... @" select * from employees "; // create connection SqlConnection conn = new SqlConnection(connString); try { conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn); SqlDataReader rdr = cmd.ExecuteReader(); //...

Ngày tải lên: 09/08/2014, 14:20

... @" select productname, unitprice from products where unitprice < 20 "; // create connection SqlConnection conn = new SqlConnection(connString); try { // open connection conn.Open(); // create ... query string sql = @" select contactname, country from customers "; // create connection SqlConnection conn = new SqlConnection(connString); try { // Create data adapter SqlDataAdapter ... should call the RefreshSchema method on the command builder to refresh the metadata accordingly. To create a command builder, you create an instance of the data provider’s com- mand builder class,...

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 09/08/2014, 14:20

Ngày tải lên: 09/08/2014, 14:20