/// <summary>
/// Loads xaml content from a WPF package.
/// </summary>
/// <param name="stream">
/// Stream that must be accessible for reading and structured as
/// a WPF container: part XamlEntryPart is expected as one of
/// its entry parts.
/// </param>
/// <returns>
/// Returns a xaml element loaded from the entry part of the package.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Throws parsing exception when the xaml content does not comply with the xaml schema.
/// </exception>
/// <exception cref="ArgumentException">
/// Throws validation exception when the package is not well structured.
/// </exception>
/// <exception cref="Exception">
/// Throws uri exception when the pachageBaseUri is not correct absolute uri.
/// </exception>
/// <remarks>
/// USED IN LEXICON VIA REFLECTION
/// </remarks>
internal static object LoadElement(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
object xamlObject;
try
{
WpfPayload wpfPayload = WpfPayload.OpenWpfPayload(stream);
// Now load the package
using (wpfPayload.Package)
{
// Validate WPF paypoad and get its entry part
PackagePart xamlEntryPart = wpfPayload.ValidatePayload();
// Define a unique uri for this instance of PWF payload.
// Uniqueness is required to make sure that cached images are not mixed up.
int newWpfPayoutCount = Interlocked.Increment(ref _wpfPayloadCount);
Uri payloadUri = new Uri("payload://wpf" + newWpfPayoutCount, UriKind.Absolute);
Uri entryPartUri = PackUriHelper.Create(payloadUri, xamlEntryPart.Uri); // gives an absolute uri of the entry part
Uri packageUri = PackUriHelper.GetPackageUri(entryPartUri); // extracts package uri from combined package+part uri
PackageStore.AddPackage(packageUri, wpfPayload.Package); // Register the package
// Set this temporary uri as a base uri for xaml parser
ParserContext parserContext = new ParserContext();
parserContext.BaseUri = entryPartUri;
// Call xaml parser
xamlObject = XamlReader.Load(xamlEntryPart.GetStream(), parserContext);
// Remove the temporary uri from the PackageStore
PackageStore.RemovePackage(packageUri);
}
}
catch (XamlParseException e)
{
// Incase of xaml parsing or package structure failure
// we return null.
Invariant.Assert(e != null); //to make compiler happy about not using a variable e. This variable is useful in debugging process though - to see a reason of a parsing failure
xamlObject = null;
}
catch (System.IO.FileFormatException)
{
xamlObject = null;
}
catch (System.IO.FileLoadException)
{
xamlObject = null;
}
catch (System.OutOfMemoryException)
{
xamlObject = null;
}
return(xamlObject);
}
// Token: 0x06003F20 RID: 16160 RVA: 0x0012075C File Offset: 0x0011E95C
internal static object LoadElement(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
object result;
try
{
WpfPayload wpfPayload = WpfPayload.OpenWpfPayload(stream);
using (wpfPayload.Package)
{
PackagePart packagePart = wpfPayload.ValidatePayload();
int num = Interlocked.Increment(ref WpfPayload._wpfPayloadCount);
Uri packageUri = new Uri("payload://wpf" + num, UriKind.Absolute);
Uri uri = PackUriHelper.Create(packageUri, packagePart.Uri);
Uri packageUri2 = PackUriHelper.GetPackageUri(uri);
PackageStore.AddPackage(packageUri2, wpfPayload.Package);
ParserContext parserContext = new ParserContext();
parserContext.BaseUri = uri;
bool useRestrictiveXamlReader = !Clipboard.UseLegacyDangerousClipboardDeserializationMode();
result = XamlReader.Load(packagePart.GetStream(), parserContext, useRestrictiveXamlReader);
PackageStore.RemovePackage(packageUri2);
}
}
catch (XamlParseException ex)
{
Invariant.Assert(ex != null);
result = null;
}
catch (FileFormatException)
{
result = null;
}
catch (FileLoadException)
{
result = null;
}
catch (OutOfMemoryException)
{
result = null;
}
return(result);
}