How to transfer information between pages in ASP.NET using cross-page posting in VB.NET
Software developer can transfer information between pages with technique named cross-page posting. If he wants to do use it he has to define specific, limited methods that extract just the information he need it. Let’s for example he have a page with text boxes as controls for credit card. In this case software developer might decide to add …
How to transfer information between pages in ASP.NET using cross-page posting in C#
Software developer can transfer information between pages with technique named cross-page posting. If he wants to do use it he has to define specific, limited methods that extract just the information he need it. Let’s for example he have a page with text boxes as controls for credit card. In this case software developer might decide to add …
Software developer can store custom objects in a view state just as easily as regular types. However, to store an item in a view state, ASP.NET must be able to convert it into a stream of bytes. This process is called serialization. If developer’s objects aren’t serializable, he will receive an error message when he attempts to place …
Software developer can store custom objects in a view state just as easily as regular types. However, to store an item in a view state, ASP.NET must be able to convert it into a stream of bytes. This process is called serialization. If developer’s objects aren’t serializable, he will receive an error message when he attempts to place …
How to preserve member variables for an ASP.NET page in VB.NET
Software developers can follow the next basic principle. They can save all member variables to view state when the Page.PreRender event occurs and retrieve them when the Page.Load event occurs. The Page.Load event happens every time the page is created. In case of a postback, the Load event occurs first, followed by any other control events. The next …
Software developers can follow the next basic principle. They can save all member variables to View state when the Page.PreRender event occurs and retrieve them when the Page.Load event occurs. The Page.Load event happens every time the page is created. In case of a postback, the Load event occurs first, followed by any other control events. The next …
How to encrypt View state for an individual page when it is requested
Software developer can encrypt an individual page only if a control specifically requests it using ViewStateEncryption-Mode property of the Page directive:
<%@Page ViewStateEncryptionMode=”Auto”>
The developer can set the same attribute in a configuration file:
<configuration xmlns =https://scemas.microsoft.com/.NetConfiguration/v2.0>
<system.web>
<pages viewStateEncryptionMode=”Auto”>
…
</system.web>
</configuration>
Note: Encryption imposes a performance penalty, because the web server will perform the encryption and decryption with each postback. Don’t encrypt view state …
How to turn off View state encryption for an individual page
Software developer can turn off encryption for an individual page using ViewStateEncryption-Mode property of the Page directive:
<%@Page ViewStateEncryptionMode=”Never”>
The developer can set the same attribute in a configuration file:
<configuration xmlns =https://scemas.microsoft.com/.NetConfiguration/V2.0>
<system.web>
<pages viewStateEncryptionMode=”Never”>
…
</system.web>
</configuration>
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Software developer can turn on encryption for an individual page using ViewStateEncryption-Mode property of the Page directive:
<%@Page ViewStateEncryptionMode=”Always”>
The developer can set the same attribute in a configuration file:
<configuration xmlns =https://scemas.microsoft.com/.NetConfiguration/V2.0>
<system.web>
<pages viewStateEncryptionMode=”Always”>
…
</system.web>
</configuration>
Note: Encryption imposes a performance penalty, because the web server will perform the encryption and decryption with each postback. Don’t encrypt view state if you don’t need to …
You as software developer can use code to add information directly to the view state collection of the containing page and recover it later after the page is posted back. The type of information you can store includes not only the simple data types, but your custom objects too. The view state collection is provided by ViewState property …