Modifying the OutputCache Directive in Visual C#

Creation QR Code in Visual C# Modifying the OutputCache Directive

Modifying the OutputCache Directive
QR Code 2d Barcode Creation In C#.NET
Using Barcode encoder for .NET Control to generate, create QR image in Visual Studio .NET applications.
www.OnBarcode.com
Recognizing QR Code In Visual C#.NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
It s often very useful to be able to govern output caching . For example, some pages present exactly the same content to all the users who access the page . In that case, caching a single version of the content is just fine . However, there are other circumstances in which sending the same content to everyone is inappropriate . The easiest way to control the behavior of output caching is to modify the OutputCache directive . One obvious case in which controlling the cache is important is while caching different versions of content for different browsers making requests . Different browsers often have different capabilities . If you send content that requires a feature not supported by all browsers, some browsers making requests will get a response that they re unable to handle
Paint Barcode In Visual C#
Using Barcode maker for Visual Studio .NET Control to generate, create barcode image in .NET framework applications.
www.OnBarcode.com
Barcode Reader In C#.NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
16 Caching Output
Make QR Code 2d Barcode In VS .NET
Using Barcode creation for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
Painting QR Code JIS X 0510 In VS .NET
Using Barcode generator for .NET Control to generate, create QR Code ISO/IEC18004 image in .NET framework applications.
www.OnBarcode.com
adequately . With the VaryByCustom parameter in the OutputCache directive, you can cache different content based on different browsers . Controlling the output caching is also important when your page renders content based on the parameters that are sent in the query string . For example, imagine you have a page through which a user has identified him- or herself by typing a name in a text box . The browser inserts that name in a parameter inside the query list . You can instruct the output cache to cache different versions based on parameters in the query string . For example, users who identify themselves as John Doe can get a different version of cached content than can users who identify themselves as Jane Smith . The VaryByParam attribute controls this behavior . Table 16-1 shows a summary of these parameters .
Making QR Code JIS X 0510 In Visual Basic .NET
Using Barcode generator for VS .NET Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
www.OnBarcode.com
UPC-A Generation In C#.NET
Using Barcode maker for Visual Studio .NET Control to generate, create UPC Symbol image in VS .NET applications.
www.OnBarcode.com
TABLE .16-1 . Summary .of .OutputCache .Parameters
Matrix Barcode Generator In C#
Using Barcode maker for .NET Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Generating Barcode In C#
Using Barcode maker for VS .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Attribute
Data Matrix Creation In Visual C#.NET
Using Barcode generation for .NET framework Control to generate, create DataMatrix image in .NET applications.
www.OnBarcode.com
Code 2/5 Creation In Visual C#
Using Barcode generator for VS .NET Control to generate, create 2 of 5 Industrial image in VS .NET applications.
www.OnBarcode.com
CacheProfile
Bar Code Recognizer In .NET Framework
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
www.OnBarcode.com
USS Code 128 Creation In Java
Using Barcode maker for Java Control to generate, create Code 128 Code Set B image in Java applications.
www.OnBarcode.com
Option
Print GTIN - 128 In .NET
Using Barcode generator for Reporting Service Control to generate, create UCC-128 image in Reporting Service applications.
www.OnBarcode.com
UPCA Creator In Java
Using Barcode creator for Android Control to generate, create Universal Product Code version A image in Android applications.
www.OnBarcode.com
A string
UCC - 12 Creator In Java
Using Barcode creator for Java Control to generate, create GS1-128 image in Java applications.
www.OnBarcode.com
EAN 13 Drawer In Java
Using Barcode printer for Java Control to generate, create GTIN - 13 image in Java applications.
www.OnBarcode.com
Description
Recognize QR In C#.NET
Using Barcode reader for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Make PDF417 In Java
Using Barcode generation for BIRT reports Control to generate, create PDF 417 image in BIRT applications.
www.OnBarcode.com
Name of a profile (found in web .config) to control output cache settings . Default is an empty string . Number of seconds the page or control is cached (required) . Specifies that the no store cache control header is sent (or not) . Not available to user controls . Default value is false . Manages which header and metatags are sent to clients to support caching; here are their meanings: Any page can be cached anywhere (default) . Client cached content remains at browser . Downstream cached content is stored both downstream and on the client . Server content cached on the server only . None disables caching .
Duration NoStore
number true false
Location
Any Client Downstream Server None
Shared SqlDependency
true false A string representing a database/table name pair encodings
Determines whether user control output can be shared with multiple pages . Identifies a set of database and table name pairs on which a page s or control s output cache depends . Specifies a list of encoding strings separated by commas used to vary the output cache .
VaryByContentEncoding
Part III Caching and State Management
Attribute
VaryByCustom
Option
browser custom string
Description
Tells ASP .NET to vary the output cache by browser name and version or by a custom string; must be handled by an override of GetVaryByCustomString in Global .asax . A semicolon-delimited list of strings specifying headers that might be submitted by a client . Not available to user controls . Default value is an empty string (no headers) . A semicolon-delimited list of strings specifying query string values in a GET request or variables in a POST request (required) .
VaryByHeader
* header names
VaryByParam
None * param name
The following exercise illustrates creating separate versions of cached content based on how the user identifies himself or herself .
Varying cached content by query string parameters
. 1 . . Returning to the OutputCache Web application, add a TextBox and a Button to the default .aspx page . Give the TextBox an ID of TextBoxName and the Button an ID of ButtonSubmitName . The TextBox will hold the client s name and will serve as the parameter controlling the number of cached versions of the page . 2 . . Double-click the button to add a Click event handler . In the handler, respond to the user s request by displaying a greeting using the contents of the text box . Also, modify the processing time of the page loading by reducing the amount of time the current thread sleeps (or by commenting out that line):
public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Thread.Sleep(0); Response.Write("This page was generated and cached at: " + DateTime.Now.ToString()); } protected void ButtonSubmitName_Click(object sender, EventArgs e) { Response.Write("<br><br>"); Response.Write("<h2> Hello there, " + this.TextBoxName.Text + "</h2>"); }
Copyright © OnBarcode.com . All rights reserved.