C# 异步实例化和调用WCF服务
我有一个助手方法,用于实例化WCF服务并执行操作。这对于同步调用来说非常有效,并且减少了我的主类中的代码。然而,我试图在对服务的异步调用上实现相同的方法,但在语法方面遇到了问题 这是我正在使用的助手方法:C# 异步实例化和调用WCF服务,c#,linq,wcf,asynchronous,async-await,C#,Linq,Wcf,Asynchronous,Async Await,我有一个助手方法,用于实例化WCF服务并执行操作。这对于同步调用来说非常有效,并且减少了我的主类中的代码。然而,我试图在对服务的异步调用上实现相同的方法,但在语法方面遇到了问题 这是我正在使用的助手方法: public static void Use(Action<T> action) { ChannelFactory<T> Factory = new ChannelFactory<T>("*"); Client
public static void Use(Action<T> action)
{
ChannelFactory<T> Factory = new ChannelFactory<T>("*");
ClientCredentials Credentials = new ClientCredentials();
Credentials.UserName.UserName = USER_NAME;
Credentials.UserName.Password = PASSWORD;
Factory.Endpoint.EndpointBehaviors.Remove(typeof(ClientCredentials));
Factory.Endpoint.EndpointBehaviors.Add(Credentials);
T Client = Factory.CreateChannel();
bool Success = false;
try
{
action(Client);
((IClientChannel)Client).Close();
Factory.Close();
Success = true;
}
catch (CommunicationException cex)
{
Log.Error(cex.Message, cex);
}
catch (TimeoutException tex)
{
Log.Error(tex.Message, tex);
}
finally
{
if (!Success)
{
((IClientChannel)Client).Abort();
Factory.Abort();
}
}
}
公共静态无效使用(操作)
{
ChannelFactory工厂=新的ChannelFactory(“*”);
ClientCredentials=新的ClientCredentials();
Credentials.UserName.UserName=用户名;
Credentials.UserName.Password=密码;
Factory.Endpoint.EndpointBehaviors.Remove(typeof(ClientCredentials));
Factory.Endpoint.EndpointBehaviors.Add(凭据);
T Client=Factory.CreateChannel();
布尔成功=假;
尝试
{
行动(客户);
((IClientChannel)Client.Close();
工厂关闭();
成功=真实;
}
捕获(通信异常cex)
{
日志错误(cex.Message,cex);
}
捕获(TimeoutException-tex)
{
日志错误(tex.Message,tex);
}
最后
{
如果(!成功)
{
((IClientChannel)Client.Abort();
Factory.Abort();
}
}
}
这是我从计时器已用事件对helper方法进行的同步调用:
async void Timer_Elapsed(object sender, ElapsedEventArgs e)
{
Service<IVehicleService>.Use(client =>
{
Vehicles = client.GetAllVehicles(new GetAllVehiclesRequest()).vehicleList;
});
await UpdateVehicleStatuses();
}
async void Timer\u已过(对象发送方,ElapsedEventArgs e)
{
Service.Use(客户端=>
{
Vehicles=client.GetAllVehicles(新的GetAllVehicleRequest()).vehicleList;
});
等待更新Hiclestatus();
}
这是调用GetVehicleStatus方法的地方:
private async Task UpdateVehicleStatuses()
{
// Can the call to GetVehicleStatus be turned into a lambda expression utilizing the helper method?
IEnumerable<Task<VehicleStatus>> StatusQuery = from s in Vehicles
select GetVehicleStatus(s.ClientVehicleId);
List<Task<VehicleStatus>> StatusTasks = StatusQuery.ToList();
...
}
private异步任务updateHiclestStates()
{
//能否使用helper方法将对GetVehicleStatus的调用转换为lambda表达式?
IEnumerable StatusQuery=来自车辆中的
选择GetVehicleStatus(s.ClientVehicleId);
List StatusTasks=StatusQuery.ToList();
...
}
这是GetVehicleStatus方法的当前主体:
private async Task<VehicleStatus> GetVehicleStatus(string clientVehicleID)
{
// Can this method be modified to use the helper method?
GetStatusResponse Status = await VehicleClient.GetStatusByClientIdAsync(clientVehicleID);
return Status.vehicleStatus;
}
专用异步任务GetVehiclestStatus(字符串clientVehicleID)
{
//是否可以修改此方法以使用helper方法?
GetStatusResponse Status=等待车辆客户端。GetStatusByClientIdAsync(clientVehicleID);
返回状态。车辆状态;
}
我希望将同步调用中的相同主体应用于异步调用,这样我就不必在主类中初始化服务,并且可以封装那里的所有错误处理。我在尝试将GetVehicleStatus方法转换为UpdateHiclestatus方法中的lambda表达式时遇到语法问题。我还尝试修改GetVehicleStatus方法来利用helper方法,但没有成功。我错过了什么
谢谢 您需要助手方法的异步版本:
public static async Task UseAsync(Func<T, Task> action)
{
...
try
{
await action(Client);
...
}
publicstaticasync任务UseAsync(Func操作)
{
...
尝试
{
等待行动(客户);
...
}
此外,如果需要支持返回值,则需要另一个重载:
public static async Task<TResult> UseAsync(Func<TClient, Task<TResult>> action)
{
...
TResult result;
try
{
result = await action(Client);
...
return result;
}
publicstaticasync任务UseAsync(Func操作)
{
...
结果结果;
尝试
{
结果=等待行动(客户);
...
返回结果;
}
然后您可以这样使用它:
private async Task<VehicleStatus> GetVehicleStatusAsync(string clientVehicleID)
{
GetStatusResponse Status = await UseAsync(client => client.GetStatusByClientIdAsync(clientVehicleID));
return Status.vehicleStatus;
}
专用异步任务GetVehiclestStatusAsync(字符串clientVehicleID)
{
GetStatusResponse Status=await UseAncy(客户端=>client.GetStatusByClientIdAsync(clientVehicleID));
返回状态。车辆状态;
}
您需要助手方法的异步版本:
public static async Task UseAsync(Func<T, Task> action)
{
...
try
{
await action(Client);
...
}
publicstaticasync任务UseAsync(Func操作)
{
...
尝试
{
等待行动(客户);
...
}
此外,如果需要支持返回值,则需要另一个重载:
public static async Task<TResult> UseAsync(Func<TClient, Task<TResult>> action)
{
...
TResult result;
try
{
result = await action(Client);
...
return result;
}
publicstaticasync任务UseAsync(Func操作)
{
...
结果结果;
尝试
{
结果=等待行动(客户);
...
返回结果;
}
然后您可以这样使用它:
private async Task<VehicleStatus> GetVehicleStatusAsync(string clientVehicleID)
{
GetStatusResponse Status = await UseAsync(client => client.GetStatusByClientIdAsync(clientVehicleID));
return Status.vehicleStatus;
}
专用异步任务GetVehiclestStatusAsync(字符串clientVehicleID)
{
GetStatusResponse Status=await UseAncy(客户端=>client.GetStatusByClientIdAsync(clientVehicleID));
返回状态。车辆状态;
}
您需要助手方法的异步版本:
public static async Task UseAsync(Func<T, Task> action)
{
...
try
{
await action(Client);
...
}
publicstaticasync任务UseAsync(Func操作)
{
...
尝试
{
等待行动(客户);
...
}
此外,如果需要支持返回值,则需要另一个重载:
public static async Task<TResult> UseAsync(Func<TClient, Task<TResult>> action)
{
...
TResult result;
try
{
result = await action(Client);
...
return result;
}
publicstaticasync任务UseAsync(Func操作)
{
...
结果结果;
尝试
{
结果=等待行动(客户);
...
返回结果;
}
然后您可以这样使用它:
private async Task<VehicleStatus> GetVehicleStatusAsync(string clientVehicleID)
{
GetStatusResponse Status = await UseAsync(client => client.GetStatusByClientIdAsync(clientVehicleID));
return Status.vehicleStatus;
}
专用异步任务GetVehiclestStatusAsync(字符串clientVehicleID)
{
GetStatusResponse Status=await UseAncy(客户端=>client.GetStatusByClientIdAsync(clientVehicleID));
返回状态。车辆状态;
}
您需要助手方法的异步版本:
public static async Task UseAsync(Func<T, Task> action)
{
...
try
{
await action(Client);
...
}
publicstaticasync任务UseAsync(Func操作)
{
...
尝试
{
等待行动(客户);
...
}
此外,如果需要支持返回值,则需要另一个重载:
public static async Task<TResult> UseAsync(Func<TClient, Task<TResult>> action)
{
...
TResult result;
try
{
result = await action(Client);
...
return result;
}
publicstaticasync任务UseAsync(Func操作)
{
...
结果结果;
尝试
{
结果=等待行动(客户);
...
返回结果;
}
然后您可以这样使用它:
private async Task<VehicleStatus> GetVehicleStatusAsync(string clientVehicleID)
{
GetStatusResponse Status = await UseAsync(client => client.GetStatusByClientIdAsync(clientVehicleID));
return Status.vehicleStatus;
}
专用异步任务GetVehiclestStatusAsync(字符串clientVehicleID)
{
GetStatusResponse Status=await UseAncy(客户端=>client.GetStatusByClientIdAsync(clientVehicleID));
返回状态.ve