'DeleteAsync' not sending request to uri

Question

1.00/5 (1 vote)

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C#

public HttpResponseMessage Delete(string strApiKey)
{
  string strDomainName = PageUtility.GetCurrentDomainName();
  HttpClient client = new HttpClient();
  client.BaseAddress = new Uri(strDomainName);

  // Add an Accept header for JSON format.
  client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
  HttpResponseMessage response = client.DeleteAsync(strApiKey).Result;  // Blocking call!
  return response;
}

response shows error as given below

C#

{StatusCode: 404, ReasonPhrase: 'Not Found', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  X-SourceFiles: =?UTF-8?B?RDpcU2F0eWVuZHJhXERldmVsb3BlbWVudFxUZXN0QXBpXFRlc3RBcGlcYXBpXFRlc3RcMw==?=
  Cache-Control: private
  Date: Tue, 25 Nov 2014 10:31:10 GMT
  Server: Microsoft-IIS/8.0
  X-Powered-By: ASP.NET
  Content-Length: 4917
  Content-Type: text/html; charset=utf-8
}}

Posted 24-Nov-14 4:36am

itsathere

Updated 24-Nov-14 23:37pm

v3

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Comments

Nathan Minier 25-Nov-14 7:12am

Looks like you're calling an async process in a sync manner, which is likely what's causing your issue.

Have you tried awaiting the client.DeleteAsync()?

itsathere 25-Nov-14 7:25am

HttpResponseMessage response = await client.DeleteAsync(strApiKey).Result;

r u saying the about above code

Nathan Minier 25-Nov-14 7:43am

That won't work. Do you want your function to be async or sync using an async resource?

Also, why are you sending a web request to a local resource?

Nathan Minier 25-Nov-14 7:45am

Also, have you evaluated the output of PageUtility.GetCurrentDomainName()?

itsathere 25-Nov-14 7:58am

i m sending web request to controller..actually i m able to add and edit using api controller but unable to delete or update..

Nathan Minier 25-Nov-14 9:03am

Alright. I would try HttpResponseMessage response = await client.DeleteAsync(strApiKey);

I would also make sure that IIS is configured to allow DELETE HttpMethods.

Personally, I would call a function as native code rather than using web requests to have a controller talk to itself, but it's your dime.

Member 12903678 31-Jan-17 2:55am

Hi What i have tried is:

client side

private async void Delete_Click(object sender, EventArgs e)
{
HttpClient client = getClient();

string id = comboBox1.SelectedItem.ToString();

HttpResponseMessage response = await client.DeleteAsync("api/Engine/"+id);

if (response.IsSuccessStatusCode)
{
MessageBox.Show("Successfully Deleted");
comboBox1.Text = "";
// textBox1.Text = "";
textBox2.Text = "";
textBox3.Text = "";
textBox4.Text = "";
comboBox1.Items.Clear();
PopulateComboBox();
}
else
{
MessageBox.Show("Oops there is some might be happen please review again");
}
}

And Server Side:

[Route("api/Engine/GetOnlyID")]
[HttpGet]
public IEnumerable<string> GetOnlyID()
{
// UserInput _output = JsonConvert.DeserializeObject<userinput>(userdata);

SqlConnection connection = GetConnectionString();
connection.Open();
SqlCommand command = new SqlCommand("Select ID from UserInformation", connection);
// command.Parameters.AddWithValue("@id", _output.id);
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
yield return reader.GetString(reader.GetOrdinal("ID"));
}
}
connection.Close();
}

it will work fine.

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