| System.Web (system.web.dll) | sealed class |
This class provides helper methods and is available through the
built-in Server object. It provides the useful
UrlEncode( ) method, which converts a string into
a form suitable for use as a query string variable, and the
HtmlEncode( ) method, which converts nonlegal HTML
characters in a string into the equivalent HTML entity (i.e.,
"<" is converted to
<) so they can be displayed on a page. Some
ASP.NET web controls (like buttons) do not require this conversion,
but label controls do. You may need to use the HtmlEncode(
) method manually if you bind a field with URL information
from a database. It also always a good idea to use
HtmlEncode( ) before displaying user-supplied
content to prevent possible script injection attacks.The HttpServerUtility class provides the
MapPath( ) method, which takes a string
representing a virtual path and returns the real (physical) path (for
example, it could convert "/myapp/indexl" to
"E:\Inetpub\wwwroot\myapp\indexl"). It also
provides a CreateObject( ) method for
instantiating a COM object by using its ProgID (i.e.,
objInfo=Server.CreateObject ("MSWC.MyInfo");) and
the two flow control methods Execute( ) and
Transfer( ). The Execute( )
method, which runs the script in a separate ASP.NET page and then
returns control to the current page, is rarely used in class-based
ASP.NET programming. The Transfer( ) method halts
the execution of the current page and transfers execution to the
specified page. It is similar to the HttpResponse.Redirect(
) method, but does not require a roundtrip to the client
and back and cannot transfer execution to a page on another server
(or from an ASP.NET page to an ASP page).public sealed class HttpServerUtility {
// Public Instance Properties
public string MachineName {get; }
public int ScriptTimeout {set; get; }
// Public Instance Methods
public void ClearError ( );
public object CreateObject (string progID );
public object CreateObject (Type type );
public object CreateObjectFromClsid (string clsid );
public void Execute (string path );
public void Execute (string path , System.IO.TextWriter writer );
public Exception GetLastError ( );
public string HtmlDecode (string s );
public void HtmlDecode (string s , System.IO.TextWriter output );
public string HtmlEncode (string s );
public void HtmlEncode (string s , System.IO.TextWriter output );
public string MapPath (string path );
public void Transfer (string path );
public void Transfer (string path , bool preserveForm );
public string UrlDecode (string s );
public void UrlDecode (string s , System.IO.TextWriter output );
public string UrlEncode (string s );
public void UrlEncode (string s , System.IO.TextWriter output );
public string UrlPathEncode (string s );
}
Returned By
HttpApplication.Server,
HttpContext.Server,
System.Web.Services.WebService.Server,
System.Web.UI.Page.Server,
System.Web.UI.UserControl.Server
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