如何为DeleteAsync设置标头

Question

我正在尝试在HttpClient.DeleteAsync请求上设置自定义标头.我试过用了

httpClient.DefaultRequestHeaders.Add("X-Parse-Application-Id",ParseAppID);

但得到这个错误

Misused header name. Make sure request headers are used with HttpRequestMessage, response headers with HttpResponseMessage, and content headers with HttpContent objects.

HttpClient.SendAsync可以发送自定义请求标头

System.Net.Http.HttpRequestMessage.Headers.Add("X-Parse-Application-Id",ParseAppID);

和HttpClient.PostAsync可以发送它们

System.Net.Http.StringContent.Headers.Add("X-Parse-Application-Id",ParseAppID);

如何使用DeleteAsync执行此操作？

Answer 1

实例化HttpRequestMessage并使用SendAsync：

var request = new HttpRequestMessage(HttpMethod.Delete, requestUri);
request.Headers.Add("X-Parse-Application-Id", ParseAppID);

using (var response = await _calendarClient.SendAsync(request).ConfigureAwait(false))
{
    if (response.StatusCode.Equals(HttpStatusCode.NotFound))
    {
        return;
    }
    response.EnsureSuccessStatusCode();
}