blocks|key|379752|text|您的代码应该如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|379753|public+class+HarooApi
{
++++const+string+BaseUrl+=+"https://domain.here";

++++readonly+string+_accountSid;
++++readonly+string+_secretKey;

++++public+HarooApi(string+accountSid,+string+secretKey)
++++{
++++++++_accountSid+=+accountSid;
++++++++_secretKey+=+secretKey;
++++}

++++public+void+ExecuteAndGetContent(RestRequest+request,+Action<string>+callback)
++++{
++++++++var+client+=+new+RestClient();
++++++++client.BaseUrl+=+BaseUrl;
++++++++client.Authenticator+=+new+HttpBasicAuthenticator(_accountSid,+_secretKey);
++++++++request.AddParameter("AccountSid",+_accountSid,+ParameterType.UrlSegment);
++++++++client.ExecuteAsync(request,+response+=>
++++++++{
++++++++++++callback(response.Content);
++++++++});
++++}

++++public+void+ExecuteAndGetMyClass(RestRequest+request,+Action<MyClass>+callback)
++++{
++++++++var+client+=+new+RestClient();
++++++++client.BaseUrl+=+BaseUrl;
++++++++client.Authenticator+=+new+HttpBasicAuthenticator(_accountSid,+_secretKey);
++++++++request.AddParameter("AccountSid",+_accountSid,+ParameterType.UrlSegment);
++++++++client.ExecuteAsync<MyClass>(request,+(response)+=>
++++++++{
++++++++++++callback(response.Data);
++++++++});
++++}
}|code-block|syntax|javascript|379754|我添加了两个方法，这样您就可以检查所需的内容(来自响应体的字符串内容，或者由MyClass表示的反序列化的类)。|offset|length|style|CODE|379755|entityMap^0|0|0|12|7|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Your code should look something like this:

<pre><code>public class HarooApi
{
 const string BaseUrl = "https://domain.here";

 readonly string _accountSid;
 readonly string _secretKey;

 public HarooApi(string accountSid, string secretKey)
 {
 _accountSid = accountSid;
 _secretKey = secretKey;
 }

 public void ExecuteAndGetContent(RestRequest request, Action&lt;string&gt; callback)
 {
 var client = new RestClient();
 client.BaseUrl = BaseUrl;
 client.Authenticator = new HttpBasicAuthenticator(_accountSid, _secretKey);
 request.AddParameter("AccountSid", _accountSid, ParameterType.UrlSegment);
 client.ExecuteAsync(request, response =&gt;
 {
 callback(response.Content);
 });
 }

 public void ExecuteAndGetMyClass(RestRequest request, Action&lt;MyClass&gt; callback)
 {
 var client = new RestClient();
 client.BaseUrl = BaseUrl;
 client.Authenticator = new HttpBasicAuthenticator(_accountSid, _secretKey);
 request.AddParameter("AccountSid", _accountSid, ParameterType.UrlSegment);
 client.ExecuteAsync&lt;MyClass&gt;(request, (response) =&gt;
 {
 callback(response.Data);
 });
 }
}
</code></pre>

I added two methods, so you can check what you want (string content from the response body, or a deserialized class represented here by <code>MyClass</code>)

blocks|key|379834|text|老问题，但是如果你使用的是C#+5，你可以通过创建一个返回任务T的TaskCompleteSource来创建一个通用的execute类。你的代码可能是这样的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|379835|public+Task<T>+ExecuteAsync<T>(RestRequest+request)+where+T+:+new()
++++{
++++++++var+client+=+new+RestClient();
++++++++var+taskCompletionSource+=+new+TaskCompletionSource<T>();
++++++++client.BaseUrl+=+BaseUrl;
++++++++client.Authenticator+=+new+HttpBasicAuthenticator(_accountSid,+_secretKey);
++++++++request.AddParameter("AccountSid",+_accountSid,+ParameterType.UrlSegment);
++++++++client.ExecuteAsync<T>(request,+(response)+=>+taskCompletionSource.SetResult(response.Data));
++++++++return+taskCompletionSource.Task;
++++}|code-block|syntax|javascript|379836|并像这样使用它：|379837|private+async+Task+DoWork()
++++{
++++++++var+api+=+new+HarooApi("MyAcoountId",+"MySecret");
++++++++var+request+=+new+RestRequest();
++++++++var+myClass+=+await+api.ExecuteAsync<MyClass>(request);

++++++++//+Do+something+with+myClass
++++}|379838|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Old question but if you are using C# 5 you can have a generic execute class by creating a TaskCompleteSource that resturns a Task of T. Your code could look like this:

<pre><code>public Task&lt;T&gt; ExecuteAsync&lt;T&gt;(RestRequest request) where T : new()
 {
 var client = new RestClient();
 var taskCompletionSource = new TaskCompletionSource&lt;T&gt;();
 client.BaseUrl = BaseUrl;
 client.Authenticator = new HttpBasicAuthenticator(_accountSid, _secretKey);
 request.AddParameter("AccountSid", _accountSid, ParameterType.UrlSegment);
 client.ExecuteAsync&lt;T&gt;(request, (response) =&gt; taskCompletionSource.SetResult(response.Data));
 return taskCompletionSource.Task;
 }
</code></pre>

And use it like this:

<pre><code>private async Task DoWork()
 {
 var api = new HarooApi("MyAcoountId", "MySecret");
 var request = new RestRequest();
 var myClass = await api.ExecuteAsync&lt;MyClass&gt;(request);

 // Do something with myClass
 }
</code></pre>

blocks|key|595856|text|下面就完成了这项工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|595857|public+async+Task<IRestResponse<T>>+ExecuteAsync<T>(IRestRequest+request)+where+T+:+class,+new()
{
++++var+client+=+new+RestClient
++++{
++++++++BaseUrl+=+_baseUrl,
++++++++Authenticator+=+new+HttpBasicAuthenticator(_useraname,+_password),
++++++++Timeout+=+3000,
++++};

++++var+tcs+=+new+TaskCompletionSource<T>();
++++client.ExecuteAsync<T>(request,+restResponse+=>
++++{
++++++++if+(restResponse.ErrorException+!=+null)
++++++++{
++++++++++++const+string+message+=+"Error+retrieving+response.";
++++++++++++throw+new+ApplicationException(message,+restResponse.ErrorException);
++++++++}
++++++++tcs.SetResult(restResponse.Data);
++++});

++++return+await+tcs.Task+as+IRestResponse<T>;

}|code-block|syntax|javascript|595858|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The following did the job 

<pre><code>public async Task&lt;IRestResponse&lt;T&gt;&gt; ExecuteAsync&lt;T&gt;(IRestRequest request) where T : class, new()
{
 var client = new RestClient
 {
 BaseUrl = _baseUrl,
 Authenticator = new HttpBasicAuthenticator(_useraname, _password),
 Timeout = 3000,
 };

 var tcs = new TaskCompletionSource&lt;T&gt;();
 client.ExecuteAsync&lt;T&gt;(request, restResponse =&gt;
 {
 if (restResponse.ErrorException != null)
 {
 const string message = "Error retrieving response.";
 throw new ApplicationException(message, restResponse.ErrorException);
 }
 tcs.SetResult(restResponse.Data);
 });

 return await tcs.Task as IRestResponse&lt;T&gt;;

}
</code></pre>

blocks|key|379892|text|或者更准确地说，像这样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|379893|++++public+async+Task<IRestResponse<T>>+ExecuteAsync<T>(IRestRequest+request)+where+T+:+class,+new()
++++{
++++++++var+client+=+new+RestClient(_settingsViewModel.BaseUrl);

++++++++var+taskCompletionSource+=+new+TaskCompletionSource<IRestResponse<T>>();
++++++++client.ExecuteAsync<T>(request,+restResponse+=>
++++++++{
++++++++++++if+(restResponse.ErrorException+!=+null)
++++++++++++{
++++++++++++++++const+string+message+=+"Error+retrieving+response.";
++++++++++++++++throw+new+ApplicationException(message,+restResponse.ErrorException);
++++++++++++}
++++++++++++taskCompletionSource.SetResult(restResponse);
++++++++});

++++++++return+await+taskCompletionSource.Task;
++++}|code-block|syntax|javascript|379894|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Or more precisely like this:

<pre><code> public async Task&lt;IRestResponse&lt;T&gt;&gt; ExecuteAsync&lt;T&gt;(IRestRequest request) where T : class, new()
 {
 var client = new RestClient(_settingsViewModel.BaseUrl);

 var taskCompletionSource = new TaskCompletionSource&lt;IRestResponse&lt;T&gt;&gt;();
 client.ExecuteAsync&lt;T&gt;(request, restResponse =&gt;
 {
 if (restResponse.ErrorException != null)
 {
 const string message = "Error retrieving response.";
 throw new ApplicationException(message, restResponse.ErrorException);
 }
 taskCompletionSource.SetResult(restResponse);
 });

 return await taskCompletionSource.Task;
 }
</code></pre>

blocks|key|595944|text|由于public+static+RestRequestAsyncHandle+ExecuteAsync(this+IRestClient+client,+IRestRequest+request,+Action<IRestResponse>+callback)已被弃用，因此您应该考虑使用public+Task<IRestResponse>+ExecuteAsync(IRestRequest+request,+CancellationToken+token+=+default)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|595945|下面的代码|595946|client.ExecuteAsync(request,+response+=>+{+callback(response.Content);+});|code-block|syntax|javascript|595947|应该改为|595948|await+client.ExecuteAsync(request).ContinueWith(task+=>+callback(task.Result.Content));|595949|entityMap^0|2|3K|40|2O|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|R|$]]

Since <code>public static RestRequestAsyncHandle ExecuteAsync(this IRestClient client, IRestRequest request, Action&lt;IRestResponse&gt; callback)</code> has been deprecated, you should look to using <code>public Task&lt;IRestResponse&gt; ExecuteAsync(IRestRequest request, CancellationToken token = default)</code> instead.
The following code
<pre><code>client.ExecuteAsync(request, response =&gt; { callback(response.Content); });
</code></pre>
Should instead become
<pre><code>await client.ExecuteAsync(request).ContinueWith(task =&gt; callback(task.Result.Content));
</code></pre>

I'm attempting to use the documentation on the <a href="https://github.com/restsharp/RestSharp/wiki/Recommended-Usage" rel="noreferrer">RestSharp GitHub wiki</a> to implement calls to my REST API service but I'm having an issue with the ExecuteAsync method in particular.

Currently my code looks like this for the API class:

<pre><code>public class HarooApi
{
 const string BaseUrl = "https://domain.here";

 readonly string _accountSid;
 readonly string _secretKey;

 public HarooApi(string accountSid, string secretKey)
 {
 _accountSid = accountSid;
 _secretKey = secretKey;
 }

 public T Execute&lt;T&gt;(RestRequest request) where T : new()
 {
 var client = new RestClient();
 client.BaseUrl = BaseUrl;
 client.Authenticator = new HttpBasicAuthenticator(_accountSid, _secretKey);
 request.AddParameter("AccountSid", _accountSid, ParameterType.UrlSegment);
 client.ExecuteAsync&lt;T&gt;(request, (response) =&gt;
 {
 return response.Data;
 });
 }
}
</code></pre>

I'm aware this slightly deviates from what is on the GitHub page but I'm using this with WP7 and believe the example is for C# hence the usage of the ExecuteAsync method.

My problem is with what the ExecuteAsync command should contain. I can't use <code>return response.Data</code> because I'm warned:

<pre><code>'System.Action&lt;RestSharp.RestResponse&lt;T&gt;,RestSharp.RestRequestAsyncHandle&gt;' returns void, a return keyword must not be followed by an object expression
</code></pre>

Does anyone have any insight on how to fix this or a tutorial that may assist?

How should I implement ExecuteAsync with RestSharp on Windows Phone 7?

GitHub

我正在尝试使用上的文档来实现对REST API服务的调用，但我在使用ExecuteAsync方法时遇到了特别的问题。目前，我的API类代码如下所示：public class HarooApi{    const string BaseUrl = "https://domain.here";    readonly st...

问如何在Windows phone7上使用RestSharp实现ExecuteAsync？
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