Common WCF logic and code 2. Check beforecall and aftercall Parameters

This sectionCodeYou can run it directly in wcf4.0. Copy the desired person...

I often forget the code... make a backup.

Although. Net already has built-in types for checking input parameters such as datalengthattribute

However, after all, the function is limited, so implementing your own parameter check will be more powerful.

Some items cannot be implemented with built-in functions, such as checking permissions during input, request, and recording running time.

The following is the C # code (this is only an implementation. iparameterinspector can also be applied to other places, such as endpoint and attribute)

View code

     Public   Class Validationbehaviorsection: behaviorextensionelement, iservicebehavior
{

 Private   Const   String Enabledattributename = "  Enabled  " ;

[Configurationproperty (enabledattributename, defaultvalue = True , Isrequired = False )]
 Public   Bool Enabled
{
 Get { Return ( Bool ) Base [Enabledattributename];}
 Set { Base [Enabledattributename] = value ;}
}

 Protected   Override   Object Createbehavior ()
{
 Return   This ;
}

 Public   Override Type behaviortype
{
Get 
{
 Return GetType ();
}
}
 Private Validationparameterinspector getinstance ()
{
 Return   New Validationparameterinspector ();
}

 Void Iservicebehavior. addbindingparameters (servicedescription, servicehostbase, collection <serviceendpoint> endpoints, bindingparametercollection bindingparameters)
{
}

 Void Iservicebehavior. applydispatchbehavior (servicedescription, servicehostbase)
{
 If (! Enabled)
{
 Return ;
}
Validationparameterinspector inspector = getinstance ();
 Foreach (Channeldispatcher chdisp In Servicehostbase. channeldispatchers)
{
 Foreach (Endpointdispatcher epdisp In Chdisp. endpoints)
{
 //  Epdisp. dispatchruntime. messageinspectors. Add (New validationparameterinspector ());  
                      Foreach (Dispatchoperation op In Epdisp. dispatchruntime. Operations)
Op. parameterinspectors. Add (inspector );
}
}
}

Void Iservicebehavior. Validate (servicedescription, servicehostbase)
{

}
}

 Public   Class Validationparameterinspector: iparameterinspector
{
 Private Datetime starttime;
 Public   Void Aftercall ( String Operationname, Object [] Outputs, Object Returnvalue, Object Correlationstate)
{

}

 Public   Object Beforecall ( String Operationname, Object [] Inputs)
{
Starttime = datetime. now;
 Return   Null ;
}
}

The following is the configuration of Web. confg.

     <  Extensions  > 
 <  Behaviorextensions  > 
 <  Add  Name  = "Validator"  Type  = "{Namespace}. validationbehaviorsection, {DLL name }"  /> 
 </ Behaviorextensions  > 
 </  Extensions  > 
 <  Behaviors  > 
 <  Servicebehaviors  > 
 <  Behavior  > 
 < Validator  /> 
 </  Behavior  > 
 </  Servicebehaviors  > 
 </  Behaviors  >