本文整理汇总了C#中System.Web.Services.Configuration.XmlFormatExtensionPointAttribute类的典型用法代码示例。如果您正苦于以下问题:C# XmlFormatExtensionPointAttribute类的具体用法?C# XmlFormatExtensionPointAttribute怎么用?C# XmlFormatExtensionPointAttribute使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
XmlFormatExtensionPointAttribute类属于System.Web.Services.Configuration命名空间,在下文中一共展示了XmlFormatExtensionPointAttribute类的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: YMLAttribute
//引入命名空间
using System;
using System.Security.Permissions;
using System.CodeDom;
using System.IO;
using System.Text;
using System.Web.Services.Configuration;
using System.Web.Services.Description;
using System.Web.Services.Protocols;
using System.Xml.Serialization;
// The YMLAttribute allows a developer to specify that the YML SOAP
// extension run on a per-method basis. The Disabled property
// turns reversing the XML on and off.
[AttributeUsage(AttributeTargets.Method, AllowMultiple=false)]
public class YMLAttribute : SoapExtensionAttribute {
int priority = 0;
bool disabled = false;
public YMLAttribute() : this(false) {}
public YMLAttribute(bool disabled)
{
this.disabled = disabled;
}
public override Type ExtensionType
{
get { return typeof(YMLExtension); }
}
public override int Priority
{
get { return priority; }
set { priority = value; }
}
public bool Disabled
{
get { return disabled; }
set { disabled = value; }
}
}
public class YMLExtension : SoapExtension {
bool disabled = false;
Stream oldStream;
Stream newStream;
public override object GetInitializer(LogicalMethodInfo methodInfo,
SoapExtensionAttribute attribute)
{
YMLAttribute attr = attribute as YMLAttribute;
if (attr != null) return attr.Disabled;
return false;
}
public override object GetInitializer(Type serviceType)
{
return false;
}
public override void Initialize(object initializer)
{
if (initializer is Boolean) disabled = (bool)initializer;
}
public override Stream ChainStream(Stream stream)
{
if (disabled) return base.ChainStream(stream);
oldStream = stream;
newStream = new MemoryStream();
return newStream;
}
public override void ProcessMessage(SoapMessage message)
{
if (disabled) return;
switch (message.Stage)
{
case SoapMessageStage.BeforeSerialize:
Encode(message);
break;
case SoapMessageStage.AfterSerialize:
newStream.Position = 0;
Reverse(newStream, oldStream);
break;
case SoapMessageStage.BeforeDeserialize:
Decode(message);
break;
case SoapMessageStage.AfterDeserialize:
break;
}
}
void Encode(SoapMessage message)
{
message.ContentType = "text/yml";
}
void Decode(SoapMessage message)
{
if (message.ContentType != "text/yml")
throw new Exception(
"invalid content type:" + message.ContentType);
Reverse(oldStream, newStream);
newStream.Position = 0;
message.ContentType = "text/xml";
}
void Reverse(Stream from, Stream to)
{
TextReader reader = new StreamReader(from);
TextWriter writer = new StreamWriter(to);
string line;
while ((line = reader.ReadLine()) != null)
{
StringBuilder builder = new StringBuilder();
for (int i = line.Length - 1; i >= 0; i--)
{
builder.Append(line[i]);
}
writer.WriteLine(builder.ToString());
}
writer.Flush();
}
}
// The YMLReflector class is part of the YML SDFE, as it is
// called during the service description generation process.
[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public class YMLReflector : SoapExtensionReflector
{
public override void ReflectMethod()
{
ProtocolReflector reflector = ReflectionContext;
YMLAttribute attr =
(YMLAttribute)reflector.Method.GetCustomAttribute(
typeof(YMLAttribute));
// If the YMLAttribute has been applied to this XML Web service
// method, add the XML defined in the YMLOperationBinding class.
if (attr != null)
{
YMLOperationBinding yml = new YMLOperationBinding();
yml.Reverse = !(attr.Disabled);
reflector.OperationBinding.Extensions.Add(yml);
}
}
}
// The YMLImporter class is part of the YML SDFE, as it is called when a
// proxy class is generated for each XML Web service method the proxy class
// communicates with. The class checks whether the service description
// contains the XML that this SDFE adds to a service description. If it
// exists, then the YMLExtension is applied to the method in the proxy class.
[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public class YMLImporter : SoapExtensionImporter
{
public override void ImportMethod(
CodeAttributeDeclarationCollection metadata)
{
SoapProtocolImporter importer = ImportContext;
// Check whether the XML specified in the YMLOperationBinding
// is in the service description.
YMLOperationBinding yml =
(YMLOperationBinding)importer.OperationBinding.Extensions.Find(
typeof(YMLOperationBinding));
if (yml != null)
{
// Only apply the YMLAttribute to the method when the XML should
// be reversed.
if (yml.Reverse)
{
CodeAttributeDeclaration attr =
new CodeAttributeDeclaration(typeof(YMLAttribute).FullName);
attr.Arguments.Add(
new CodeAttributeArgument(new CodePrimitiveExpression(true)));
metadata.Add(attr);
}
}
}
}
// The YMLOperationBinding class is part of the YML SDFE, as it is the
// class that is serialized into XML and is placed in the service
// description.
[XmlFormatExtension("action", YMLOperationBinding.YMLNamespace,
typeof(OperationBinding))]
[XmlFormatExtensionPrefix("yml", YMLOperationBinding.YMLNamespace)]
public class YMLOperationBinding : ServiceDescriptionFormatExtension
{
private Boolean reverse;
public const string YMLNamespace = "http://www.contoso.com/yml";
[XmlElement("Reverse")]
public Boolean Reverse
{
get { return reverse; }
set { reverse = value; }
}
}