.NET Samples - ASP.NET Caching
This section describes the following samples:
Datacache2 Sample
Datacache1 Sample
FragmentCache1 Sample
Outputcache2 Sample
Outputcache3 Sample
Outputcache1 Sample
Datacache2 Sample
This sample demonstrates how to store and retrieve objects with dependencies in the ASP.NET cache. In this case, the cache entry is dependent on a file. Whenever the file is changed, the existing cache entry is purged and re-created.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
System; System.Data; System.IO
Classes used in this sample:
File; Stream; TextBox; Control; RequiredFieldValidator; Message; Cache; FileStream; Font; DataSet; Path; DataGrid; StreamReader; Object; EventArgs; DataView; Xml; Table; Import; TextWriter; Page; Style; Header; StreamWriter; CacheDependency; Exception; CheckBox; Label; DataRow
Datacache1 Sample
This sample demonstrates how to store and retrieve arbitrary objects, such as DataSet objects, in the ASP.NET cache.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
System.Data; System; System.Data.SqlClient
Classes used in this sample:
Cache; DataSet; DataGrid; DataView; SqlDataAdapter; Font; DataAdapter; Import; SqlConnection; Object; Style; Page; EventArgs; Table; Header
FragmentCache1 Sample
This sample shows simple fragment caching in ASP.NET. The sample caches the output from a control that retrieves data from a SQL Server database, while keeping the dynamic properties of the parent page. You can see that the page is dynamic because the time is updated whenever the page is refreshed, while the control is only updated every 60 seconds.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
System.Data; System; System.Data.SqlClient
Classes used in this sample:
DataGrid; Control; Page; SqlDataAdapter; Object; Font; DataSet; SqlConnection; DataAdapter; Import; String; EventArgs; Style; Table; DataView; Header; Cache
Outputcache2 Sample
This sample shows the same technique for output caching as the sample above, but queries a database and displays the results in a grid. Caching the response allows the server to respond to subsequent requests without retrieving from the database again.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
System.Data; System; System.Data.SqlClient
Classes used in this sample:
DataGrid; SqlDataAdapter; Font; DataSet; SqlConnection; DataAdapter; Import; Cache; Style; Table; DataView; Page; EventArgs; Header; String; Object
Outputcache3 Sample
This sample modifies the previous example to allow the user to selectively query the database for authors in different U.S. states. This sample demonstrates caching requests that vary by the name/value pairs in the query string using the VaryByParam attribute of the @OutputCache directive.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
System.Data; System; System.Data.SqlClient
Classes used in this sample:
DataGrid; String; Font; DataSet; SqlConnection; DataAdapter; Import; SqlDataAdapter; Cache; Table; DataView; Page; EventArgs; Header; Object; Style
Outputcache1 Sample
This sample demonstrates a simple way to output cache responses using the @OutputCache directive. The example simply displays the time when the response was generated. To see output caching in action, invoke the page and note the time at which the response was generated. Then refresh the page and note that the time has not changed, indicating that the second response is being served from the output cache.
Link to the online sample documentation
Link to the online sample source code
Namespaces used in this sample:
(none)
Classes used in this sample:
Cache; Page; Object; EventArgs; String