Asp.net mvc web api異步請求結果

Question

我有一個web api控制器操作，發送請求到另一臺服務器並獲取圖像。

public class MyController : ApiController 
{ 
    public async Runner<HttpResponseMessage> Wms() 
    { 
     return await Run();          
    } 

    private Task<HttpResponseMessage> Run() 
    { 
     HttpRequestMessage requestMessage = new HttpRequestMessage(); 
     requestMessage.RequestUri = "http://...."; 

     foreach (var header in this.Request.Headers) 
      requestMessage.Headers.Add(header.Key, header.Value); 

     return requestMessage.SendAsync(); 
    } 
} 

我怎樣才能得到的requestMessage.SendAsync()

Answer 1

異步請求結果你需要異步調節劑添加到方法和await SendAsync()：

private async Task<HttpResponseMessage> RunAsync() 
{ 
    HttpRequestMessage requestMessage = new HttpRequestMessage(); 
    requestMessage.RequestUri = "http://...."; 

    foreach (var header in this.Request.Headers) 
     requestMessage.Headers.Add(header.Key, header.Value); 

    HttpResponseMessage response = await requestMessage.SendAsync(); 
    string resultData = await response.Content.ReadAsStringAsync(); 
} 

或者，如果你想裏面Wms響應，你可以await那。