語言

OutArgument<T> 建構函式

定義

命名空間:
System.Activities
組件:
System.Activities.dll

初始化一個新的類別實例 OutArgument<T> 。

多載

名稱 Description
OutArgument<T>()

用預設值初始化該 OutArgument<T> 類別的新實例。
OutArgument<T>(Activity<Location<T>>)

使用指定的 OutArgument<T>初始化類別的新實例Activity<TResult>。
OutArgument<T>(DelegateArgument)

使用指定的 OutArgument<T>初始化類別的新實例DelegateArgument。
OutArgument<T>(Variable)

使用指定的 OutArgument<T>初始化類別的新實例Variable。
OutArgument<T>(Expression<Func<ActivityContext,T>>)

使用指定的表達式初始化該類別的新實例 OutArgument<T> 。

OutArgument<T>()

用預設值初始化該 OutArgument<T> 類別的新實例。

public:
 OutArgument();
public OutArgument();
Public Sub New ()

範例

以下程式碼範例示範如何建立一個 OutArgument<T>. 此範例來自 Formatter 範例。

Sequence workflow = new Sequence
{
    Variables = { mealExpense, result },
    Activities =
        {
            new Assign<Expense>
            {
               Value = new InArgument<Expense>( (e) => new Meal { Amount = 50, Location = "Redmond", Vendor = "KFC" }),
               To = new OutArgument<Expense>(mealExpense)
            },
            new WriteLine
            {
                Text = new InArgument<string>("Hello")
            },
            approveExpense,
            new ReceiveReply
            {
                Request = approveExpense,
                Content = ReceiveContent.Create(new OutArgument<bool>(result))
            },

            new If
            {
               Condition = new InArgument<bool> (result),
               Then =
                    new WriteLine
                    {
                        Text = new InArgument<string>("Expense Approved")
                    },
               Else =
                    new WriteLine
                    {
                        Text = new InArgument<string>("Expense Cannot be Approved")
                    },
            },
        }
};

適用於

OutArgument<T>(Activity<Location<T>>)

使用指定的 OutArgument<T>初始化類別的新實例Activity<TResult>。

public:
 OutArgument(System::Activities::Activity<System::Activities::Location<T> ^> ^ expression);
public OutArgument(System.Activities.Activity<System.Activities.Location<T>> expression);
new System.Activities.OutArgument<'T> : System.Activities.Activity<System.Activities.Location<'T>> -> System.Activities.OutArgument<'T>
Public Sub New (expression As Activity(Of Location(Of T)))

參數

expression
Activity<Location<T>>

自變數的值。

適用於

OutArgument<T>(DelegateArgument)

使用指定的 OutArgument<T>初始化類別的新實例DelegateArgument。

public:
 OutArgument(System::Activities::DelegateArgument ^ delegateArgument);
public OutArgument(System.Activities.DelegateArgument delegateArgument);
new System.Activities.OutArgument<'T> : System.Activities.DelegateArgument -> System.Activities.OutArgument<'T>
Public Sub New (delegateArgument As DelegateArgument)

參數

delegateArgument
DelegateArgument

自變數的值。

適用於

OutArgument<T>(Variable)

使用指定的 OutArgument<T>初始化類別的新實例Variable。

public:
 OutArgument(System::Activities::Variable ^ variable);
public OutArgument(System.Activities.Variable variable);
new System.Activities.OutArgument<'T> : System.Activities.Variable -> System.Activities.OutArgument<'T>
Public Sub New (variable As Variable)

參數

variable
Variable

自變數的值。

適用於

OutArgument<T>(Expression<Func<ActivityContext,T>>)

使用指定的表達式初始化該類別的新實例 OutArgument<T> 。

public:
 OutArgument(System::Linq::Expressions::Expression<Func<System::Activities::ActivityContext ^, T> ^> ^ expression);
public OutArgument(System.Linq.Expressions.Expression<Func<System.Activities.ActivityContext,T>> expression);
new System.Activities.OutArgument<'T> : System.Linq.Expressions.Expression<Func<System.Activities.ActivityContext, 'T>> -> System.Activities.OutArgument<'T>
Public Sub New (expression As Expression(Of Func(Of ActivityContext, T)))

參數

expression
Expression<Func<ActivityContext,T>>

自變數的值。

適用於