DynamicActivity.Implementation Property
Definition
Important
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Gets or sets the execution logic of the activity.
public:
property Func<System::Activities::Activity ^> ^ Implementation { Func<System::Activities::Activity ^> ^ get(); void set(Func<System::Activities::Activity ^> ^ value); };
[System.ComponentModel.Browsable(false)]
[System.Windows.Markup.Ambient]
[System.Windows.Markup.XamlDeferLoad(typeof(System.Activities.XamlIntegration.FuncDeferringLoader), typeof(System.Activities.Activity))]
public Func<System.Activities.Activity> Implementation { get; set; }
[<System.ComponentModel.Browsable(false)>]
[<System.Windows.Markup.Ambient>]
[<System.Windows.Markup.XamlDeferLoad(typeof(System.Activities.XamlIntegration.FuncDeferringLoader), typeof(System.Activities.Activity))>]
member this.Implementation : Func<System.Activities.Activity> with get, set
Public Property Implementation As Func(Of Activity)
Property Value
The execution logic.
- Attributes
Examples
The following example shows how to specify the implementation for a dynamic activity.
// Variables
var iterationVariable = new DelegateInArgument<int>() { Name = "iterationVariable" };
var accumulator = new Variable<int>() { Default = 0, Name = "accumulator" };
// Define the Input and Output arguments that the DynamicActivity binds to
var numbers = new InArgument<List<int>>();
var average = new OutArgument<double>();
var result = new Variable<double>() { Name = "result" };
return new DynamicActivity()
{
DisplayName = "Find average",
Properties =
{
// Input argument
new DynamicActivityProperty
{
Name = "Numbers",
Type = typeof(InArgument<List<int>>),
Value = numbers
},
// Output argument
new DynamicActivityProperty
{
Name = "Average",
Type = typeof(OutArgument<double>),
Value = average
}
},
Implementation = () =>
new Sequence
{
Variables = { result, accumulator },
Activities =
{
new ForEach<int>
{
Values = new ArgumentValue<IEnumerable<int>> { ArgumentName = "Numbers" },
Body = new ActivityAction<int>
{
Argument = iterationVariable,
Handler = new Assign<int>
{
To = accumulator,
Value = new InArgument<int>(env => iterationVariable.Get(env) + accumulator.Get(env))
}
}
},
// Calculate the average and assign to the output argument.
new Assign<double>
{
To = new ArgumentReference<double> { ArgumentName = "Average" },
Value = new InArgument<double>(env => accumulator.Get(env) / numbers.Get(env).Count<int>())
},
}
}
Applies to
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