“/”应用程序中的服务器错误。
--------------------------------------------
由于目标计算机积极拒绝，无法连接。
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。
异常详细信息: System.Net.Sockets.SocketException: 由于目标计算机积极拒绝，无法连接。
源错误:
行 59: [System.Web.Services.Protocols.SoapDocumentMethodAttribute("http://tempuri.org/addition", RequestNamespace="http://tempuri.org/", ResponseNamespace="http://tempuri.org/", Use=System.Web.Services.Description.SoapBindingUse.Literal, ParameterStyle=System.Web.Services.Protocols.SoapParameterStyle.Wrapped)]
行 60: public double addition(double i, double j) {
行 61: object[] results = this.Invoke("addition", new object[] {
行 62: i,
行 63: j});
源文件: e:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\6ac46272\83444449\App_WebReferences.llqb1_l4.0.cs 行: 61
堆栈跟踪:
[SocketException (0x274d): 由于目标计算机积极拒绝，无法连接。]
System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) +1029090
System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP) +33
System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception) +431
[WebException: 无法连接到远程服务器]
System.Net.HttpWebRequest.GetRequestStream() +1530701
System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +103
localhost.Service.addition(Double i, Double j) in e:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\6ac46272\83444449\App_WebReferences.llqb1_l4.0.cs:61
_Default.btn_Click(Object sender, EventArgs e) in d:\http\Default.aspx.cs:35
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102
------解决方案--------------------
你检查一下web.config文件里的service的链接地址：
一般开发时默认是本机的，你如果发布了就有改到服务器。
<applicationSettings>
<Chant.Client.Properties.Settings>
<setting name="ChantMES_Client_localhost_Service" serializeAs="String">
<value>http://localhost:3917/ChantMES_Service/Service.asmx</value>
</setting>
</Chant.Client.Properties.Settings>
</applicationSettings>