The following code is provided by Microsoft corporation in the article BindingsSection.cs source code in C# .NET
namespace System.ServiceModel.Configuration
{
using System.Configuration;
using System.ServiceModel.Channels;
using System.ServiceModel;
using System.Collections.Generic;
using System.Globalization;
using System.Reflection;
using System.Xml;
using System.Security;
public sealed partial class BindingsSection : ConfigurationSection, IConfigurationContextProviderInternal
{
static Configuration configuration = null;
ConfigurationPropertyCollection properties;
public BindingsSection() { }
Dictionary<string, bindingcollectionelement=""> BindingCollectionElements
{
get
{
Dictionary<string, bindingcollectionelement=""> bindingCollectionElements = new Dictionary<string, bindingcollectionelement="">();
foreach (ConfigurationProperty property in this.Properties)
{
bindingCollectionElements.Add(property.Name, this[property.Name]);
}
return bindingCollectionElements;
}
}
new public BindingCollectionElement this[string binding]
{
get
{
return (BindingCollectionElement)base[binding];
}
}
protected override ConfigurationPropertyCollection Properties
{
get
{
if (this.properties == null)
{
this.properties = new ConfigurationPropertyCollection();
}
this.UpdateBindingSections();
return this.properties;
}
}
[ConfigurationProperty(ConfigurationStrings.BasicHttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public BasicHttpBindingCollectionElement BasicHttpBinding
{
get { return (BasicHttpBindingCollectionElement)base[ConfigurationStrings.BasicHttpBindingCollectionElementName]; }
}
// This property should only be called/set from BindingsSectionGroup TryAdd
static Configuration Configuration
{
get { return BindingsSection.configuration; }
set { BindingsSection.configuration = value; }
}
[ConfigurationProperty(ConfigurationStrings.CustomBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public CustomBindingCollectionElement CustomBinding
{
get { return (CustomBindingCollectionElement)base[ConfigurationStrings.CustomBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.MsmqIntegrationBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public MsmqIntegrationBindingCollectionElement MsmqIntegrationBinding
{
get { return (MsmqIntegrationBindingCollectionElement)base[ConfigurationStrings.MsmqIntegrationBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.NetPeerTcpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public NetPeerTcpBindingCollectionElement NetPeerTcpBinding
{
get { return (NetPeerTcpBindingCollectionElement)base[ConfigurationStrings.NetPeerTcpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.NetMsmqBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public NetMsmqBindingCollectionElement NetMsmqBinding
{
get { return (NetMsmqBindingCollectionElement)base[ConfigurationStrings.NetMsmqBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.NetNamedPipeBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public NetNamedPipeBindingCollectionElement NetNamedPipeBinding
{
get { return (NetNamedPipeBindingCollectionElement)base[ConfigurationStrings.NetNamedPipeBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.NetTcpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public NetTcpBindingCollectionElement NetTcpBinding
{
get { return (NetTcpBindingCollectionElement)base[ConfigurationStrings.NetTcpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.WSFederationHttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public WSFederationHttpBindingCollectionElement WSFederationHttpBinding
{
get { return (WSFederationHttpBindingCollectionElement)base[ConfigurationStrings.WSFederationHttpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.WS2007FederationHttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public WS2007FederationHttpBindingCollectionElement WS2007FederationHttpBinding
{
get { return (WS2007FederationHttpBindingCollectionElement)base[ConfigurationStrings.WS2007FederationHttpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.WSHttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public WSHttpBindingCollectionElement WSHttpBinding
{
get { return (WSHttpBindingCollectionElement)base[ConfigurationStrings.WSHttpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.WS2007HttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public WS2007HttpBindingCollectionElement WS2007HttpBinding
{
get { return (WS2007HttpBindingCollectionElement)base[ConfigurationStrings.WS2007HttpBindingCollectionElementName]; }
}
[ConfigurationProperty(ConfigurationStrings.WSDualHttpBindingCollectionElementName, Options = ConfigurationPropertyOptions.None)]
public WSDualHttpBindingCollectionElement WSDualHttpBinding
{
get { return (WSDualHttpBindingCollectionElement)base[ConfigurationStrings.WSDualHttpBindingCollectionElementName]; }
}
public static BindingsSection GetSection(Configuration config)
{
if (config == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("config");
}
return (BindingsSection)config.GetSection(ConfigurationStrings.BindingsSectionGroupPath);
}
public List<bindingcollectionelement> BindingCollections
{
get
{
List<bindingcollectionelement> bindingCollections = new List<bindingcollectionelement>();
foreach (ConfigurationProperty property in this.Properties)
{
bindingCollections.Add(this[property.Name]);
}
return bindingCollections;
}
}
internal static bool TryAdd(string name, Binding binding, Configuration config, out string bindingSectionName)
{
bool retval = false;
BindingsSection.Configuration = config;
try
{
retval = BindingsSection.TryAdd(name, binding, out bindingSectionName);
}
finally
{
BindingsSection.Configuration = null;
}
return retval;
}
internal static bool TryAdd(string name, Binding binding, out string bindingSectionName)
{
// TryAdd built on assumption that BindingsSectionGroup.Configuration is valid.
// This should be protected at the callers site. If assumption is invalid, then
// configuration system is in an indeterminate state. Need to stop in a manner that
// user code can not capture.
if (null == BindingsSection.Configuration)
{
DiagnosticUtility.DebugAssert("The TryAdd(string name, Binding binding, Configuration config, out string binding) variant of this function should always be called first. The Configuration object is not set.");
DiagnosticUtility.FailFast("The TryAdd(string name, Binding binding, Configuration config, out string binding) variant of this function should always be called first. The Configuration object is not set.");
}
bool retval = false;
string outBindingSectionName = null;
BindingsSection sectionGroup = BindingsSection.GetSection(BindingsSection.Configuration);
sectionGroup.UpdateBindingSections();
foreach (string sectionName in sectionGroup.BindingCollectionElements.Keys)
{
BindingCollectionElement bindingCollectionElement = sectionGroup.BindingCollectionElements[sectionName];
// Save the custom bindings as the last choice
if (!(bindingCollectionElement is CustomBindingCollectionElement))
{
MethodInfo tryAddMethod = bindingCollectionElement.GetType().GetMethod("TryAdd", BindingFlags.Instance | BindingFlags.NonPublic);
if (tryAddMethod != null)
{
retval = (bool)tryAddMethod.Invoke(bindingCollectionElement, new object[] { name, binding, BindingsSection.Configuration });
if (retval)
{
outBindingSectionName = sectionName;
break;
}
}
}
}
if (!retval)
{
// Much of the time, the custombinding should come out ok.
CustomBindingCollectionElement customBindingSection = CustomBindingCollectionElement.GetBindingCollectionElement();
retval = customBindingSection.TryAdd(name, binding, BindingsSection.Configuration);
if (retval)
{
outBindingSectionName = ConfigurationStrings.CustomBindingCollectionElementName;
}
}
// This little oddity exists to make sure that the out param is assigned to before the method
// exits.
bindingSectionName = outBindingSectionName;
return retval;
}
/// <securitynote>
/// Critical - uses SecurityCritical method UnsafeLookupCollection which elevates
/// Safe - does not leak config objects
/// </securitynote>
[SecurityCritical, SecurityTreatAsSafe]
void UpdateBindingSections()
{
ExtensionElementCollection bindingExtensions = ExtensionsSection.UnsafeLookupCollection(ConfigurationStrings.BindingExtensions, ConfigurationHelpers.GetEvaluationContext(this));
// Extension collections are additive only (BasicMap) and do not allow for <clear>
// or <remove> tags, nor do they allow for overriding an entry. This allows us
// to optimize this to only walk the binding extension collection if the counts
// mismatch.
if (bindingExtensions.Count != this.properties.Count)
{
foreach (ExtensionElement bindingExtension in bindingExtensions)
{
if (null != bindingExtension)
{
if (!this.properties.Contains(bindingExtension.Name))
{
ConfigurationProperty property = new ConfigurationProperty(bindingExtension.Name,
Type.GetType(bindingExtension.Type, true),
null,
ConfigurationPropertyOptions.None);
this.properties.Add(property);
}
}
}
}
}
/// <securitynote>
/// Critical - uses SecurityCritical method UnsafeGetAssociatedBindingCollectionElement which elevates
/// Safe - does not leak config objects
/// </securitynote>
[SecurityCritical, SecurityTreatAsSafe]
internal static void ValidateBindingReference(string binding, string bindingConfiguration, ContextInformation evaluationContext, ConfigurationElement configurationElement)
{
// ValidateBindingReference built on assumption that evaluationContext is valid.
// This should be protected at the callers site. If assumption is invalid, then
// configuration system is in an indeterminate state. Need to stop in a manner that
// user code can not capture.
if (null == evaluationContext)
{
DiagnosticUtility.DebugAssert("ValidateBindingReference() should only called with valid ContextInformation");
DiagnosticUtility.FailFast("ValidateBindingReference() should only called with valid ContextInformation");
}
if (!String.IsNullOrEmpty(binding))
{
BindingCollectionElement bindingCollectionElement = null;
if (null != evaluationContext)
{
bindingCollectionElement = ConfigurationHelpers.UnsafeGetAssociatedBindingCollectionElement(evaluationContext, binding);
}
else
{
bindingCollectionElement = ConfigurationHelpers.UnsafeGetBindingCollectionElement(binding);
}
if (bindingCollectionElement == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(SR.GetString(SR.ConfigInvalidSection,
ConfigurationHelpers.GetBindingsSectionPath(binding)),
configurationElement.ElementInformation.Source,
configurationElement.ElementInformation.LineNumber));
}
if (!String.IsNullOrEmpty(bindingConfiguration))
{
if (!bindingCollectionElement.ContainsKey(bindingConfiguration))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ConfigurationErrorsException(SR.GetString(SR.ConfigInvalidBindingName,
bindingConfiguration,
ConfigurationHelpers.GetBindingsSectionPath(binding),
ConfigurationStrings.BindingConfiguration),
configurationElement.ElementInformation.Source,
configurationElement.ElementInformation.LineNumber));
}
}
}
}
ContextInformation IConfigurationContextProviderInternal.GetEvaluationContext()
{
return this.EvaluationContext;
}
/// <securitynote>
/// RequiresReview - the return value will be used for a security decision -- see comment in interface definition
/// </securitynote>
ContextInformation IConfigurationContextProviderInternal.GetOriginalEvaluationContext()
{
DiagnosticUtility.DebugAssert("Not implemented: IConfigurationContextProviderInternal.GetOriginalEvaluationContext");
return null;
}
}
}
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