SqlTriggerAttribute Class

Used to mark a method definition in an assembly as a trigger in SQL Server. The properties on the attribute reflect the physical attributes used when the type is registered with SQL Server. This class cannot be inherited.

System.Object
  System.Attribute
    Microsoft.SqlServer.Server.SqlTriggerAttribute

Namespace:  Microsoft.SqlServer.Server
Assembly:  System.Data (in System.Data.dll)

[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
public sealed class SqlTriggerAttribute : Attribute

The SqlTriggerAttribute type exposes the following members.

  NameDescription
Public methodSqlTriggerAttributeAn attribute on a method definition in an assembly, used to mark the method as a trigger in SQL Server.
Top

  NameDescription
Public propertyEventThe type of trigger and what data manipulation language (DML) action activates the trigger.
Public propertyNameThe name of the trigger.
Public propertyTargetThe table to which the trigger applies.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Top

  NameDescription
Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Top

  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
Top

See "CLR Triggers" in SQL Server 2005 Books Online for more information on CLR triggers and examples.

The following example shows the SqlTriggerAttribute specifying the name of the trigger, the target table, and the event that will fire the trigger. See SqlTriggerContext for the full trigger example.

[SqlTrigger(Name = @"SalesAudit", Target = "[dbo].[SalesInfo]", Event = "FOR INSERT")]
public static void SalesAudit()
{
   // Get the trigger context.
   SqlTriggerContext triggContext = SqlContext.TriggerContext;

   switch (triggContext.TriggerAction)
   {
      case TriggerAction.Insert:

      // Do something in response to the INSERT. 

      break;
   }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft