我有一个课程，你可以看到它调用我的服务。
public class ReceptionService : IReceptionService
{
private WebClient ClientRequest;
private MemoryStream ms;
private DataContractJsonSerializer serializerToUplaod;
public string ServiceHostName = "http://Reception" + ServiceServer.ServiceAddress;
public ReceptionService()
{
ClientRequest = new WebClient();
ms = new MemoryStream();
}
public int ValidateAndSubmitReception(NajaResult ReceptionData)
{
ClientRequest.Headers["Content-type"] = "application/json";
serializerToUplaod = new DataContractJsonSerializer(typeof(NajaResult));
serializerToUplaod.WriteObject(ms, ReceptionData);
string Result = System.Text.Encoding.UTF8.GetString(ClientRequest.UploadData(ServiceHostName + "/ReceptionService.svc/ValidateAndSubmitReception", "POST", ms.ToArray()));
return int.Parse(Result.Replace("\"", string.Empty).ToString());
//return receptionid
}
public List<ReceptionView> SearchReceptionView(string receptionId, string organizationid, string automotiveid, string referredid, string organizationuserid, string datestart, string dateend)
{
ClientRequest.Headers["Content-type"] = "application/json";
ClientRequest.Encoding = System.Text.Encoding.UTF8;
string result = ClientRequest.DownloadString(ServiceHostName + "/ReceptionService.svc/SearchReceptionView/" + receptionId + "/" +
);
var javascriptserializer = new JavaScriptSerializer();
return javascriptserializer.Deserialize<List<ReceptionView>>(result);
}
}
但是我得到了这个错误：
An unhandled exception has occurred.
9/10/2017 12:12:22 PM
9/10/2017 7:42:22 AM
aa5bf89271374f3199c105419ee229c5
40394
2002
0
/LM/W3SVC/3/ROOT-1-131494715467654187
Full
/
C:\inetpub\a1New\
aa-APP1
6020
w3wp.exe
IIS APPPOOL\Newa1
NotSupportedException
WebClient does not support concurrent I/O operations. at System.Net.WebClient.ClearWebClientState() at System.Net.WebClient.DownloadString(Uri address) at UPTO.UI.Services.Service.UserService.GetPermissionByUserId(String UserId) at UPTO.UI.Infrastructure.Security.MyRoleProvider.GetRolesForUser(String UserId) at System.Web.Security.RolePrincipal.IsInRole(String role) at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate) at System.Web.Mvc.AuthorizeAttribute.AuthorizeCore(HttpContextBase httpContext) at System.Web.Mvc.AuthorizeAttribute.OnAuthorization(AuthorizationContext filterContext) at System.Web.Mvc.ControllerActionInvoker.InvokeAuthorizationFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) at System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
https://newa1.moi.ir:443/TestCenters/GasReceptions/PrintReception?ReceptionId=12948
/TestCenters/GasReceptions/PrintReception
10.138.132.17
6726
True
Forms
IIS APPPOOL\Newa1
3570
IIS APPPOOL\Newa1
False
at System.Net.WebClient.ClearWebClientState() at System.Net.WebClient.DownloadString(Uri address) at UPTO.UI.Services.Service.UserService.GetPermissionByUserId(String UserId) at UPTO.UI.Infrastructure.Security.MyRoleProvider.GetRolesForUser(String UserId) at System.Web.Security.RolePrincipal.IsInRole(String role) at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate) at System.Web.Mvc.AuthorizeAttribute.AuthorizeCore(HttpContextBase httpContext) at System.Web.Mvc.AuthorizeAttribute.OnAuthorization(AuthorizationContext filterContext) at System.Web.Mvc.ControllerActionInvoker.InvokeAuthorizationFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) at System.Web.Mvc.Controller.<BeginExecuteCore>b__1c(AsyncCallback asyncCallback, Object asyncState, ExecuteCoreState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__4(AsyncCallback asyncCallback, Object asyncState, ProcessRequestState innerState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallBeginDelegate(AsyncCallback callback, Object callbackState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TState](AsyncCallback callback, Object callbackState, BeginInvokeDelegate`1 beginDelegate, EndInvokeVoidDelegate`1 endDelegate, TState invokeState, Object tag, Int32 timeout, SynchronizationContext callbackSyncContext) at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)