DynamicDOM v0.43.2. Implementation based on XRules v0.43

XRulesContext Class

Implements XRules-specific XPath functions such as: config(), context(), target(), property(), iif()... etc.

For a list of all members of this type, see XRulesContext Members.


[Visual Basic]
Public Class XRulesContext
    Inherits XsltContext
public class XRulesContext : XsltContext
public __gc class XRulesContext : public XsltContext
public class XRulesContext extends XsltContext

Thread Safety

Public static (Shared in Visual Basic) members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.


You can derive from this class to create your own custom context classes to add extention XPath functions and variables. Important: In your custom context class, if you're overriding the ResolveFunction() or ResolveVariabe() functions, remember to call the corresponding function in the base class; otherwise, the XRules processor won't be able to resolve XRules functions such as config() and property().


The following example shows how to override XRulesContext to implement custom XPath functions.

internal class CustomContext : XRules.XRulesContext
    protected internal CustomContext(XRulesDocument xrules) : base(xrules)

    public override IXsltContextFunction ResolveFunction(string prefix, 
                                string name, XPathResultType[] argTypes)
        switch (name)
            case "AddNumbers":
                // CustomFunction implements the IXsltContextFunction interface.
                CustomFunction xrulesFunction = new CustomFunction(name);
                return xrulesFunction;
        // Call the base function to resolve XRules functions.
        return base.ResolveFunction(prefix, name, argTypes);


Namespace: XRules

Assembly: XRules.DynamicDom (in XRules.DynamicDom.dll)

See Also

XRulesContext Members | XRules Namespace