Hosting Remote Objects in IIS

Q323490 - INFO: Configure .NET Remoting When the Remoting Client Is an ASP.NET Application or the Client Is Another Remoted Component That Is Hosted by IIS

Defining the Basic Elements of .NET

Develop Software in .NET with Non-Administrative Privileges

Obscure <location> Element

This element is not documented in the overall ASP.NET Web.Config schema.

It allows you to change the settings for a given subdirectory. (not sure about 2 levels down, like "data/foo" since "/" seems to be illegal in the path attribute).

Docs on this are here. Found in ".NET Framework SDK \ Configuring Applications \ ASP.NET Configuration \ Hierarchical Configuration Architecture \ Configuration <location> Settings.

<! Configuration for the "Sub1" subdirectory. -->

<location path="sub1">

  <system.web>

     <httpHandlers>

        <add verb="*" path="Sub1.Scott" type="Sub1.Scott"/>

        <add verb="*" path="Sub1.David" type="Sub1.David"/>

     </httpHandlers>

  </system.web>

</location>

Update: Ok, so this only works for aspx files (i.e. can't protect xml data files this way?)
(To protect sub directories 2 levels down, have to use forward slash in the web.config)

Loosely Coupled Events

Some quirky behavior when creating and installing queued components. (LCE, COM+)

Beware of the version number that gets automatically incremented by default. This causes the regsvcs tool to create a new GUID for the event class, which means there will be multiple entries listed for the event class. If you don't select the correct one for the subscription, it won't work.

Something gets screwed up so that when you add a subscription through the COM+ catalog, you select the interface, then the list of event classes that implement that interface is empty. Still haven't figured out what's going on here.

As a workaround, if the list of event classes is empty, you can check the "use all event classes that support the specified interface" box and it still seems to work. (As long as you know the event class is in fact registered properly.)

Random Tidbits

WinCV.exe (in FrameworkSDK\bin directory) is stand-alone class browser. Other 3rd party tools and shareware do a better job though. Look for Reflector in or near Chris Sells pages (or his buddies).

XSLT Transformation Output

Start by loading the XPathDocument, then various ways to handle the output of the transformation:

XPathDocument doc = new XPathDocument(Server.MapPath("XML/Customers.xml"));

XslTransform trans = new XslTransform();

trans.Load(Server.MapPath("XSLT/Customers.xslt"));

Output with StringWriter class

StringWriter sw = new StringWriter();

trans.Transform(doc,null,sw);

/*

A StringBuilder class is automatically written to 

by the StringWriter class. To get the value in 

the StringBuilder you can use the ToString() 

method as shown below

*/

this.txtStringBuilder.Text = sw.ToString();

sw.Close();

Output with XmlTextWriter class

//************  XmlTextWriter XSLT Output Capture

//This can be useful when you need to apply 

formatting to the output

StringWriter sw2 = new StringWriter();

//Write to StringWriter

XmlTextWriter xmlWriter = new XmlTextWriter(sw2); 

xmlWriter.Formatting = Formatting.Indented;

xmlWriter.Indentation = 4;

trans.Transform(doc,null,xmlWriter);

this.txtXmlTextWriter.Text = sw2.ToString();

sw2.Close();

xmlWriter.Close();

Output with XmlReader class

XmlReader xmlReader = trans.Transform(doc,null);

xmlReader.MoveToContent();

this.txtXmlTextReader.Text = 

xmlReader.ReadOuterXml();

xmlReader.Close();

Output with MemoryStream class

//************  MemoryStream XSLT Output Capture

MemoryStream ms = new MemoryStream();

trans.Transform(doc,null,ms);

//Convert MemoryStream to byte array using 

ToArray()

//Convert byte array to a string using the 

UTF8Encoding class

UTF8Encoding utf = new UTF8Encoding();

this.txtMemoryStream.Text = 

utf.GetString(ms.ToArray());

ms.Close();

Code snipets from XML and WebServices magazine