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Catch<TException> Class
Visual Studio 2010
Contains the actions to be executed after an exception is raised in the corresponding Try block of a TryCatchFinally activity.
Assembly: System.Activities (in System.Activities.dll)
The Catch<TException> type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | Action | The handler for the exception being caught. |
![]() | ExceptionType | The type of exception that the Catch block is handling. (Overrides Catch::ExceptionType.) |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The following code sample demonstrates creating a Catch<TException> activity. This example is from the Fault Handling in a Flowchart Activity Using TryCatch sample.
FlowStep mwkStep = new FlowStep { Action = new TryCatch { DisplayName = "Try/Catch for Divide By Zero Exception", Try = new Assign { DisplayName = "discount = 15 + (1 - 1/numberOfKids)*10", To = new OutArgument<double>(discount), Value = new InArgument<double>((ctx) => (15 + (1 - 1 / numberOfKids.Get(ctx)) * 10)) }, Catches = { new Catch<System.DivideByZeroException> { Action = new ActivityAction<System.DivideByZeroException> { Argument = ex, DisplayName = "ActivityAction - DivideByZeroException", Handler = new Sequence { DisplayName = "Divide by Zero Exception Workflow", Activities = { new WriteLine() { DisplayName = "WriteLine: DivideByZeroException", Text = "DivideByZeroException: Promo code is MWK - but number of kids = 0" }, new Assign<double> { DisplayName = "Exception - discount = 0", To = discount, Value = new InArgument<double>(0) } } } } } } }, Next = flowDecision };
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
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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