CommunicationException未被用戶代碼處理

我創建了一個解決方案，然後添加了一個包含所有WCF服務的項目。然後我添加了它在同一個解決方案中對我的Silverlight項目的引用。現在，當我嘗試調試，我得到一個消息框，說This Silverlight project you are about to debug is consuming web services. Calls to the web service will fail unless the project is executed in the context of the web which contains the web service.我還是當我運行它得到這個錯誤： -CommunicationException未被用戶代碼處理

An error occurred while trying to make a request to URI 'http://localhost:50318/CustomersService.svc'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details.

這是詳細的異常： -

{System.ServiceModel.CommunicationException: An error occurred while trying to make a request to URI 'http://localhost:50318/CustomersService.svc'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. This error may also be caused by using internal types in the web service proxy without using the InternalsVisibleToAttribute attribute. Please see the inner exception for more details. ---> System.Security.SecurityException ---> System.Security.SecurityException: Security error. 
    at System.Net.Browser.BrowserHttpWebRequest.InternalEndGetResponse(IAsyncResult asyncResult) 
    at System.Net.Browser.BrowserHttpWebRequest.<>c__DisplayClass5.<EndGetResponse>b__4(Object sendState) 
    at System.Net.Browser.AsyncHelper.<>c__DisplayClass2.<BeginOnUI>b__0(Object sendState) 
    --- End of inner exception stack trace --- 
    at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state) 
    at System.Net.Browser.BrowserHttpWebRequest.EndGetResponse(IAsyncResult asyncResult) 
    at System.ServiceModel.Channels.HttpChannelFactory.HttpRequestChannel.HttpChannelAsyncRequest.CompleteGetResponse(IAsyncResult result) 
    --- End of inner exception stack trace --- 
    at System.ServiceModel.AsyncResult.End[TAsyncResult](IAsyncResult result) 
    at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result) 
    at System.ServiceModel.ClientBase`1.ChannelBase`1.EndInvoke(String methodName, Object[] args, IAsyncResult result) 
    at MVVMDemo.CustomersServiceRef.CustomersServiceClient.CustomersServiceClientChannel.EndGetCustomers(IAsyncResult result) 
    at MVVMDemo.CustomersServiceRef.CustomersServiceClient.MVVMDemo.CustomersServiceRef.ICustomersService.EndGetCustomers(IAsyncResult result) 
    at MVVMDemo.CustomersServiceRef.CustomersServiceClient.OnEndGetCustomers(IAsyncResult result) 
    at System.ServiceModel.ClientBase`1.OnAsyncCallCompleted(IAsyncResult result)}

我應該怎麼辦？

感謝提前:)

來源

2010-09-15 TCM

如果您的網頁託管Silverlight控件，你要連接在不同的域（在烏拉圭回合的情況下，它看起來像它們是不同的項目），你將需要添加的Web服務clientaccesspolicy.xml文件到您的網站。

<?xml version="1.0" encoding="utf-8"?> 
<access-policy> 
    <cross-domain-access> 
    <policy> 
     <allow-from http-request-headers="SOAPAction"> 
     <domain uri="*"/> 
     </allow-from> 
     <grant-to> 
     <resource path="/" include-subpaths="true"/> 
     </grant-to> 
    </policy> 
    </cross-domain-access> 
</access-policy>

看看這個link更多細節

來源

2010-09-15 12:03:27

維奈嗨，我沒有更多的讓那個討厭的例外，但我得到的消息框。這是正常的嗎？ – TCM 2010-09-15 12:11:45

如果您能夠毫無問題地完成web服務，那麼它應該沒問題，但在部署應用程序時請記住這一點 – 2010-09-15 12:16:12

CommunicationException未被用戶代碼處理

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