ASP.NET PDF Viewer using C#, VB/NET

Figure 3-21. Course outline as delivered via e-mail If you ve ever created a Custom Control, you know that the Render method expects an instance of an HtmlTextWriter. This type is handy for easing the programmatic generation of HTML. In this case, it s the key to capturing the output stream. The first couple of lines of code create an instance of the HtmlTextWriter, but instead of using the IIS output stream, it uses a StringBuilder and a StringWriter. This effectively has all of the controls send their output into the character buffer of the string builder instead of down the output stream. The next line simply calls Render and passes the HtmlTextWriter. The next few lines create and configure the mail message that will contain the rendered output. Notice the BodyFormat property is being set to MailFormat.Html. Failure to do this will send raw markup as the body of your mail message (although your users will see this anyway if their mail clients do not support HTML e-mail, but that s sooo 20th century). The body of the message is created by converting the StringBuilder s buffer into a string. The last very important point to notice is that the processing is then terminated by calling Response.End, but not before a little JavaScript gets sent down the pipe instructing the dialog to close itself. You can also terminate the process by redirecting the user to another page. You cannot allow the Page to enter its rendering process again, as the Page has already rendered and will throw an exception if asked to do so a second time.

no active barcode in excel 2007, how to add barcode font in excel 2010, using barcode in excel 2007, create barcode in excel 2016, barcode generator excel 2010 freeware, barcode macro excel, excel barcode generator macro, excel barcodes, barcode excel erzeugen freeware, excel barcode generator mac,

Platform Invoke defines default behavior for mapping common types used by the Win32 API; Table 17-1 shows the default conversions. Most of the mappings are natural, but it is important to note that there are several entries for strings. This is because strings are represented in different ways in programming language runtimes. To show how strings are marshalled, we start with a simple C function that echoes a string on the console: void CINTEROPDLL_API echo(char* str) { puts(str); }

Connection Pooling Interfaces and Oracle Implementation Standard JDBC Interfaces from the javax.sql Package Oracle JDBC Classes from the oracle.jdbc.pool Package OracleDataSource

void*

Figure 14-3. JDBC interfaces that define connection pooling and the Oracle classes that implement them The javax.sql.ConnectionPoolDataSource interface defines the standard functionality of connection pool data sources. The getPooledConnection() method of this interface returns a pooled connection instance and optionally takes a username and password as input in its overloaded version: public javax.sql.PooledConnection getPooledConnection() throws SQLException; public javax.sql.PooledConnection getPooledConnection( String userName, String password ) throws SQLException; As Figure 14-3 indicates, the Oracle class oracle.jdbc.pool.OracleConnectionPoolDataSource implements the ConnectionPoolDataSource interface. This class also extends the OracleDataSource class, so it includes all the connection properties and getter and setter methods described in the section Connecting to a Database of 3. The getPooledConnection() method of this class returns an OraclePooledConnection class instance, which implements the PooledConnection interface. A pooled connection instance encapsulates a physical connection to the database specified in the connection properties of the connection pool data source instance with which it was created. It implements the following standard javax.sql.PooledConnection interface: public interface javax.sql.PooledConnection { public void close() throws SQLException public java.sql.Connection getConnection() throws SQLException public abstract void addConnectionEventListener( javax.sql.ConnectionEventListener); public abstract void removeConnectionEventListener( javax.sql.ConnectionEventListener); }

Summary

32 bits on 32-bit Windows operating systems, 64 bits on 64-bit Windows operating systems 8 bits 16 bits 16 bits 32 bits 32 bits 32 bits 32 bits 32 bits 32 bits Decorate with ANSI Decorate with ANSI Decorate with ANSI Decorate with Unicode Decorate with Unicode 32 bits 64 bits

The getConnection() method of this interface returns a logical connection instance to the application. Calling the close() method on a pooled connection object closes the physical connection remember, this is performed by the middle-tier code that manages the connection pool. The connection event listeners are used to handle events that arise when an associated logical connection is closed, for example. The OraclePooledConnection class has methods that enable statement caching (both implicit and explicit) for a pooled connection (see 13 for details on this feature). All logical connections obtained from a pooled connection share the same cache, since the underlying physical connection is where the caching happens. This implies that when statement caching is enabled, a statement you create on one logical connection can be reused by another logical connection. It follows that you cannot enable or disable statement caching on individual logical connections. The following are OraclePooledConnection method definitions for statement caching: public public public public public public boolean getExplicitCachingEnabled(); boolean getImplicitCachingEnabled(); int getStatementCacheSize(); void setExplicitCachingEnabled(boolean); void setImplicitCachingEnabled(boolean); void setStatementCacheSize(int);