问从MVC4站点向另一个站点发送命令

EN

context.SaveChanges();

await context.SaveChangesAsync();

[HttpPost]
public async Task<ActionResult> Create(MyModel model)
{
    if (ModelState.IsValid)
    {
        // Logic to save the model.
        // I usually reload saved data using something kind of the statement below:

        var inserted = context.MyModels
            .AsNoTracking()
            .Where(m => m.SomeCondition == someVariable)
            .SingleOrDefault();

        // Send Command.
        // APIMyModel is a simple class with public properties.
        var apiModel = new APIMyModel();

        apiModel.AProperty = inserted.AProperty;
        apiModel.AnotherProperty = inserted.AnotherProperty;

        DataContractJsonSerializer jsonSer = new DataContractJsonSerializer(typeof(APIMyModel));

        // use the serializer to write the object to a MemoryStream 
        MemoryStream ms = new MemoryStream();
        jsonSer.WriteObject(ms, apiModel);
        ms.Position = 0;

        //use a Stream reader to construct the StringContent (Json) 
        StreamReader sr = new StreamReader(ms);
        // Note if the JSON is simple enough you could ignore the 5 lines above that do the serialization and construct it yourself 
        // then pass it as the first argument to the StringContent constructor 
        StringContent theContent = new StringContent(sr.ReadToEnd(), System.Text.Encoding.UTF8, "application/json"); 

        HttpClient aClient = new HttpClient();
        Uri theUri = new Uri("http://yoursite/api/TheAPIAction");
        HttpResponseMessage aResponse = await aClient.PostAsync(theUri, theContent);

        if (aResponse.IsSuccessStatusCode)
        {
            // Success Logic. Yay!
        }
        else
        {
            // show the response status code 
            String failureMsg = "HTTP Status: " + aResponse.StatusCode.ToString() + " - Reason: " + aResponse.ReasonPhrase;
        } 

        return RedirectToAction("Index");  
    }

    // if Model is not valid, you can put your logic to reload ViewBag properties here.
}