我得到了这个异常:
通信对象System.ServiceModel.Channels.ServiceChannel不能用于通信,因为它处于故障状态。
WCF服务使用默认的wsHttpBinding。无论我在哪里使用WCF,我都会以以下方式使用它:
using (var proxy = new CAGDashboardServiceClient())
{
proxy.Open();
var result = proxy.GetSiteForRegion(ddlRegions.SelectedValue);
ddlSites.DataSource = result;
ddlSites.DataBind();
proxy.Close();
}
消息中显示的错误行似乎在上次proxy.close之后。不知道发生了什么。我正在从visual studio 08中启动该服务。
以下是跟踪信息:
The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.
Server stack trace:
at System.ServiceModel.Channels.CommunicationObject.Close(TimeSpan timeout)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at System.ServiceModel.ICommunicationObject.Close(TimeSpan timeout)
at System.ServiceModel.ClientBase`1.System.ServiceModel.ICommunicationObject.Close(TimeSpan timeout)
at System.ServiceModel.ClientBase`1.Close()
at System.ServiceModel.ClientBase`1.System.IDisposable.Dispose()
at CAGDashboard.UserControls.ucVolunteerCRUDGrid.ddlRegions_SelectedIndexChanged(Object sender, EventArgs e) in C:\Documents and Settings\rballalx\My Documents\Visual Studio 2008\Projects\DashboardCAG\CAGDashboard\UserControls\ucVolunteerCRUDGrid.ascx.cs:line 81
at System.Web.UI.WebControls.ListControl.OnSelectedIndexChanged(EventArgs e)
at System.Web.UI.WebControls.DropDownList.RaisePostDataChangedEvent()
at System.Web.UI.WebControls.DropDownList.System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent()
at System.Web.UI.Page.RaiseChangedEvents()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
https://stackoverflow.com/questions/530731
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