SetterInterceptor Property (NavigationScalarEntityProperty<TInstance,TValue>)

Syntax

Visual Basic
C#

'Declaration
 
Public ReadOnly Property SetterInterceptor As PropertyInterceptor(Of TInstance,TValue,NavigationEntityPropertySetInterceptorArgs(Of TInstance,TValue))

'Usage
 
Dim instance As NavigationScalarEntityProperty(Of TInstance,TValue)
Dim value As PropertyInterceptor(Of TInstance,TValue,NavigationEntityPropertySetInterceptorArgs(Of TInstance,TValue))
 
value = instance.SetterInterceptor

public PropertyInterceptor<TInstance,TValue,NavigationEntityPropertySetInterceptorArgs<TInstance,TValue>> SetterInterceptor {get;}

Remarks

Use the SetterInterceptor to add custom BeforeSet and AfterSet interception actions to a property setter.

Any registered IdeaBlade.Validation.VerifierExecutionModes.OnBeforeSetTriggers and IdeaBlade.Validation.VerifierExecutionModes.OnAfterSetTriggers verifiers will be executed This verification is done immediately before and after the value is stored in the backing field. BeforeSet actions will occur before OnBeforeSet verification and AfterSet actions will occur after OnAfterSet verification.

Will be null for a read only property.

Example

public void Sample() {

  // Add a BeforeGet action to a GetterInterceptor:
  Employee.PropertyMetadata.DirectReports.GetterInterceptor.AddAction(
    PropertyInterceptorTiming.Before,
    TraceGetter);

  // Add a BeforeSet action to a SetterInterceptor (a SetterInterceptor is available
  // only for scalar and non-readonly navigation properties).
  Employee.PropertyMetadata..Manager.SetterInterceptor.AddAction(
    PropertyInterceptorTiming.Before,
    TraceSetter);

  // Get/set a few properties
  DomainModelEntityManager mgr = new DomainModelEntityManager();
  Employee e = mgr.Employees.First();
  e.Manager = null;         
  var list = e.DirectReports;
}

public static void TraceGetter(IEntityPropertyGetInterceptorArgs args) {
  Console.WriteLine("getter called for " + args.EntityProperty.Name);
}

public static void TraceSetter(IEntityPropertySetInterceptorArgs args) {
  Console.WriteLine("setter called for " + args.EntityProperty.Name);
}

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

NavigationScalarEntityProperty<TInstance,TValue> Class
NavigationScalarEntityProperty<TInstance,TValue> Members