How to use HTTPClient Synchronusly?

Question

Hi All,

in some cases I need wait the HTTPClient's result, how to use it synchronusly?

mine was as follow:

bool _break = false;
int pageNo=1;
do 
{
   string url = baseAddress + $"/api/v7/labels?page={pageNo}&limit=1000";

   await _httpClient.GetAsync(url).ContinueWith(async (c) =>    
   {     var response = await c;   

        _break == response.IsSuccessStatusCode;

        if (response.IsSuccessStatusCode)
        {
            iStatusCode = (int)response.StatusCode;

            string _res = response.Content.ReadAsStringAsync().Result;

            if (!string.IsNullOrEmpty(_res))
            { 
               // do some processes             
            }          
         }
     } 

 pageNo++;
} while (!_break)

Answer 1

Since you're already awaiting the response from the calling code I'm assuming that you mean that you want the lexical flow to appear synchronous, rather than synchronously blocking the calling thread. If that's correct then you can just move the response handling outside of the ContinueWith callback:

bool _break = false;
int pageNo = 1;
do
{
	string url = baseAddress + $"/api/v7/labels?page={pageNo}&limit=1000";

	HttpResponseMessage response = await _httpClient.GetAsync(url);

	_break = response.IsSuccessStatusCode;

	if (response.IsSuccessStatusCode)
	{
		iStatusCode = (int)response.StatusCode;

		string _res = response.Content.ReadAsStringAsync().Result;

		if (!string.IsNullOrEmpty(_res))
		{
			// do some processes             
		}
	}

	pageNo++;
} while (!_break);