我正在使用SL 5和WCF DS 5.我打電話給一個服務POST操作,其中一個字符串作爲輸入發送,基本上是文本文件的內容。看來當字符串是小,它的工作原理,但是當它是圍繞1.4kb的(文本文件的大小),這個錯誤被拋出:錯誤發佈1.4KB從Silverlight到WCF數據服務的字符串
{System.InvalidOperationException: An error occurred while processing this request. ---> System.Exception: Error HRESULT E_FAIL has been returned from a call to a COM component.
在System.Net.Browser.ClientHttpWebRequest.EndGetResponse(IAsyncResult的asyncResult) 在System.Data.Services.Http.ClientHttpWebRequest.EndGetResponse(IAsyncResult的asyncResult) 在System.Data.Services.Client.HttpWebRequestMessage.EndGetResponse(IAsyncResult的asyncResult) 在System.Data.Services.Client.HttpTransportLayer.EndGetResponse( IODataRequestMessage requestMessage,IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceContext.GetResponseHelper(ODataRequestMessageWrapper request,IAsyncResult asyncResult,Boolean handleWebException) at System.Data.Services.Client.QueryResult.AsyncEndGetResponse(IAsyncResult asyncResult) --- End of internal exception stack trace --- at System.Data.Services.Client.BaseAsyncResult.EndExecute [T](Object源,String方法,IAsyncResult asyncResult) at System.Data.Services.Client.QueryResult.EndExecuteQuery [TElement](Object source,String method,IAsyncResult asyncResult) at System.Data.Services.Client.DataServiceRequest.EndExecute [TElement] (對象源,DataServiceContext上下文中,字符串方法,IAsyncResult的asyncResult) 在System.Data.Services.Client.DataServiceContext.EndExecute [TElement](IAsyncResult的asyncResult)
我請從WPF應用程序編輯相同的操作,並且它工作正常。我也這樣做了WCF DS主機上:
WebHttpBinding binding = new WebHttpBinding();
binding.MaxReceivedMessageSize = int.MaxValue;
binding.MaxBufferPoolSize = int.MaxValue;
binding.MaxBufferSize = int.MaxValue;
binding.ReaderQuotas.MaxStringContentLength = int.MaxValue;
下面是來自SL客戶端調用:
CodeFirstContainer context;
context = new CodeFirstContainer(new Uri("http://localhost:4444/MyDataService/"));
OperationParameter p = new UriOperationParameter("fileIDN", fileIDN);
OperationParameter p1 = new UriOperationParameter("**fileContent**", responseContent);
context.BeginExecute<int>
(new Uri(context.BaseUri.OriginalString + "ProcessTextFile"),
(r) =>
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
try
{
context = r.AsyncState as CodeFirstContainer;
// Get the response of the query.
var response = context.EndExecute<int>(r).ToList();
}
catch (Exception ex)
{
}
}
);
},
context, "POST", true, new OperationParameter[] { p, p1 }
);