类型“<var>Type Name</var>”中基于任务的异步 OperationContract 方法“<var>Method name</var>”与异步 OperationContract 方法“<var>X</var>”和“<var>Y</var>”匹配，因为它们具有相同的操作名称“<var>Z</var>”。当基于任务的异步 OperationContract 方法与一对异步 OperationContract 方法匹配时，必须在基于任务的异步 OperationContract 方法上定义任何其他特性。在本例中，异步 OperationContract 方法“<var>X</var>”具有一个或多个类型为“X”的特性。若要修复此问题，请从方法“<var>X</var>”中移除“X”特性。或者，也可以更改其中一个方法的名称以防止匹配。

The task-based asynchronous OperationContract method '<var>Method name</var>' in type '<var>Type Name</var>' was matched with the asynchronous OperationContract methods '<var>X</var>' and '<var>Y</var>' because they have the same operation name '<var>Z</var>'. When a task-based asynchronous OperationContract method is matched to a pair of asynchronous OperationContract methods, any additional attributes must be declared on the task-based asynchronous OperationContract method. In this case, the asynchronous OperationContract method '<var>X</var>' has one or more attributes of type 'X'. To fix it, remove the 'X' attribute or attributes from method '<var>X</var>'. Alternatively, changing the name of one of the methods will prevent matching.

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