ReceiveActivity.ParameterBindings 属性

定义

命名空间:

System.Workflow.Activities

程序集:

System.WorkflowServices.dll

获取服务的形参表中可绑定参数的集合。

public:
 property System::Workflow::ComponentModel::WorkflowParameterBindingCollection ^ ParameterBindings { System::Workflow::ComponentModel::WorkflowParameterBindingCollection ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Workflow.ComponentModel.WorkflowParameterBindingCollection ParameterBindings { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ParameterBindings : System.Workflow.ComponentModel.WorkflowParameterBindingCollection

Public ReadOnly Property ParameterBindings As WorkflowParameterBindingCollection

属性值

WorkflowParameterBindingCollection

要绑定到的参数的 WorkflowParameterBindingCollection。

属性

BrowsableAttribute

示例

下面的示例演示如何访问 ParameterBindings 属性。 此代码根据 Conversations 文件中的 ShipperWorkflow.designer.cs SDK 示例改写。

ReceiveActivity receiveQuoteFromShipper1 = new ReceiveActivity();
CodeActivity shipper1ShippingQuote = new CodeActivity();
ContextToken contextToken1 = new ContextToken();
ActivityBind activityBind1 = new ActivityBind();
WorkflowParameterBinding workflowParameterBinding1 = new WorkflowParameterBinding();
TypedOperationInfo typedOperationInfo1 = new TypedOperationInfo();

receiveQuoteFromShipper1.Activities.Add(shipper1ShippingQuote);
contextToken1.Name = "Shipper1Context";
contextToken1.OwnerActivityName = "GetShippingQuotes";
receiveQuoteFromShipper1.ContextToken = contextToken1;
receiveQuoteFromShipper1.Name = "receiveQuoteFromShipper1";
activityBind1.Name = "SupplierWorkflow";
activityBind1.Path = "quoteShipper1";
workflowParameterBinding1.ParameterName = "quote";
workflowParameterBinding1.SetBinding(WorkflowParameterBinding.ValueProperty, ((ActivityBind)(activityBind1)));
receiveQuoteFromShipper1.ParameterBindings.Add(workflowParameterBinding1);
typedOperationInfo1.ContractType = typeof(IShippingQuote);
typedOperationInfo1.Name = "ShippingQuote";
receiveQuoteFromShipper1.ServiceOperationInfo = typedOperationInfo1;

注解

ParameterBindings 可用于指定服务操作参数与包含 ReceiveActivity 活动的工作流的公共字段/属性之间的绑定。 当客户端调用操作时，会在接收活动执行期间写入相应的参数值以绑定工作流属性。

接收活动的子活动也可以使用 ParameterBindings 读取客户端调用传入的参数值。 子活动可以使用 ParameterBindings 集合来设置父级 ReceiveActivity 活动的返回值。

服务协定的所有参数都应该包含在 ParameterBindings 属性中。 未绑定的参数将导致在编译时生成编译器警告，并且在 ReceiveActivity 将此消息返回到客户端时，可能会发生异常。