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XmlPreloadedResolver Class

The XmlPreloadedResolver type is used to prepopulate the cache with DTDs or XML streams.

System.Object
  System.Xml.XmlResolver
    System.Xml.Resolvers.XmlPreloadedResolver

Namespace:  System.Xml.Resolvers
Assembly:  System.Xml.Utils (in System.Xml.Utils.dll)

public class XmlPreloadedResolver : XmlResolver

The XmlPreloadedResolver type exposes the following members.

  NameDescription
Public methodXmlPreloadedResolver()Initializes a new instance of the XmlPreloadedResolver class.
Public methodXmlPreloadedResolver(XmlKnownDtds)Initializes a new instance of the XmlPreloadedResolver class with the specified preloaded well-known DTDs.
Public methodXmlPreloadedResolver(XmlResolver)Initializes a new instance of the XmlPreloadedResolver class with the specified fallback resolver.
Public methodXmlPreloadedResolver(XmlResolver, XmlKnownDtds)Initializes a new instance of the XmlPreloadedResolver class with the specified fallback resolver and preloaded well-known DTDs.
Public methodXmlPreloadedResolver(XmlResolver, XmlKnownDtds, IEqualityComparer<Uri>)Initializes a new instance of the XmlPreloadedResolver class with the specified fallback resolver, preloaded well-known DTDs and URI equality comparer.
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  NameDescription
Public propertyPreloadedUrisGets a collection of preloaded URIs.
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  NameDescription
Public methodAdd(Uri, Byte[])Adds a Stream, byte array, or string with preloaded data to the XmlPreloadedResolver store and maps it to a URI. If the store already contains a mapping for the same URI, the existing mapping is overridden.
Public methodAdd(Uri, Stream)Adds a Stream, byte array, or string with preloaded data to the XmlPreloadedResolver store and maps it to a URI. If the store already contains a mapping for the same URI, the existing mapping is overridden.
Public methodAdd(Uri, String)Adds a Stream, byte array, or string with preloaded data to the XmlPreloadedResolver store and maps it to a URI. If the store already contains a mapping for the same URI, the existing mapping is overridden.
Public methodAdd(Uri, Byte[], Int32, Int32)Adds a Stream, byte array, or string with preloaded data to the XmlPreloadedResolver store and maps it to a URI. If the store already contains a mapping for the same URI, the existing mapping is overridden.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetEntityMaps a URI to an object that contains the actual resource. (Overrides XmlResolver.GetEntity(Uri, String, Type).)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodRemoveRemoves the data corresponding to the URI from the XmlPreloadedResolver.
Public methodResolveUriResolves the absolute URI from the base and relative URIs. (Overrides XmlResolver.ResolveUri(Uri, String).)
Public methodSupportsTypeReturns true if the resolver’s GetEntity method can resolve the provided URI into an instance of the provided Type. (Overrides XmlResolver.SupportsType(Uri, Type).)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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The XmlPreloadedResolver type is used as a resolver when automatic calls to the network are not desired or are not possible. For example, this type can be used for loading cached external DTDs. Or, you might use XmlPreloadedResolver to preload well-known DTDs that are defined in XHTML 1.0. Preloading well-known DTDs does not invoke any network connections, because these DTDs are already embedded in the System.Xml.Utils assembly. Currently, XmlPreloadedResolver includes the DTDs that are defined in XHTML 1.0 and RSS 0.91.

The following example preloads the DTDs and entities defined in XHTML 1.0 by setting Xhtml10 on the XmlPreloadedResolver. In this example, the XHTMLPage.html file is a part of the application's XAP package; therefore, we have to pass a fallback resolver to the constructor of the XmlPreloadedResolver.



XmlReaderSettings settings = new XmlReaderSettings();
settings.DtdProcessing = DtdProcessing.Parse;
settings.XmlResolver =
    new XmlPreloadedResolver(new XmlXapResolver(),
        XmlKnownDtds.Xhtml10);

using (XmlReader reader = XmlReader.Create("HTMLPage.html", settings))
{
XDocument document = XDocument.Load(reader);
OutputTextBlock.Text = document.ToString();
}


Silverlight

Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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