问题描述
我有一个名为聊天室"的解决方案，并且我有Silverlight应用程序，还有WCF数据服务的花药.
我需要检查昵称是否存在，然后答案是否定的，我需要插入新访客.
因此，我需要调用服务并选择一条记录然后插入一条记录.
但是Silverlight异步调用服务，因此我需要同步调用服务方法.经过艰苦的网络导航后，我知道这不适用.
因此，在这一点上，我需要异步调用Select方法，等到完成后再调用Insert方法.
如果可以的话，请提供代码.如果还有其他解决方法或其他方法，请提供代码.
Hi,
I have a solution called "Chat Room", and I have Silverlight application, and anther for WCF Data Service.
I need to check if the Nickname Exists, then if the answer is False I need to Insert the new visitor.
So I need to call the service and Select a record then Insert a record.
But Silverlight Invoke Asynchronously to services and I need to call services methods Synchronously; After hard web navigating I know that this not applicable.
So What I need at this point is to call the Select method Asynchronously and wait till finishing and then Call the Insert method.
Please provide code if you can also if there is any other workaround or other methodology it will be appreciated.
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