Unhandled Exception while Get a Response from Web API in Xamarin android - xamarin

Question

I am creating my first xamarin project with PCL .
I have created WebApi2 with Get Response and publish on my local server which works fine and provides the JSON response correctly
URL : http://test.propertytaxapi.com/api/ward
response :
[{"id":1,"zone_id":1,"ward_no":"1"},{"id":2,"zone_id":1,"ward_no":"2"},{"id":3,"zone_id":1,"ward_no":"3"},{"id":4,"zone_id":1,"ward_no":"4"},{"id":5,"zone_id":1,"ward_no":"5"},{"id":6,"zone_id":1,"ward_no":"6"}]
but when i tried to implement this in my Xamarin project and call it like.
public async Task<List<Ward>> GetData()
{
using (var client = new HttpClient())
{
try
{
client.BaseAddress = new Uri("http://test.propertytaxapi.com/api");
var response = await client.GetAsync("ward");
response.EnsureSuccessStatusCode();
var placesJson = response.Content.ReadAsStringAsync().Result;
Ward wardData = new Ward();
if (placesJson != "")
{
var wlists= JsonConvert.DeserializeObject<List<Ward>>(placesJson);
wardList = wlists.ToList();
}
}
catch (Exception)
{
return null;
}
}
return wardList;
}
I got the exception on this line :-
var response = await client.GetAsync("ward");
Exception:
11-02 14:11:29.968 E/mono ( 2954):
11-02 14:11:29.968 E/mono ( 2954): Unhandled Exception:
11-02 14:11:29.968 E/mono ( 2954): System.Net.Http.HttpRequestException: An error occurred while sending the request ---> System.Net.WebException: Error: NameResolutionFailure
11-02 14:11:29.968 E/mono ( 2954): at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00058] in <6c708cf596db438ebfc6b7e012659eee>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Threading.Tasks.TaskFactory1[TResult].FromAsyncCoreLogic (System.IAsyncResult iar, System.Func2[T,TResult] endFunction, System.Action1[T] endAction, System.Threading.Tasks.Task1[TResult] promise, System.Boolean requiresSynchronization) [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): --- End of stack trace from previous location where exception was thrown ---
11-02 14:11:29.968 E/mono ( 2954): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.968 E/mono ( 2954): at System.Net.Http.HttpClientHandler+<SendAsync>d__63.MoveNext () [0x00450] in <7736395a6c71409691a34accfc621095>:0
11-02 14:11:29.968 E/mono ( 2954): --- End of inner exception stack trace ---
11-02 14:11:29.976 E/mono-rt ( 2954): [ERROR] FATAL UNHANDLED EXCEPTION: System.Net.Http.HttpRequestException: An error occurred while sending the request ---> System.Net.WebException: Error: NameResolutionFailure
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00058] in <6c708cf596db438ebfc6b7e012659eee>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Threading.Tasks.TaskFactory1[TResult].FromAsyncCoreLogic (System.IAsyncResult iar, System.Func2[T,TResult] endFunction, System.Action1[T] endAction, System.Threading.Tasks.Task1[TResult] promise, System.Boolean requiresSynchronization) [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): --- End of stack trace from previous location where exception was thrown ---
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Runtime.CompilerServices.ConfiguredTaskAwaitable1+ConfiguredTaskAwaiter[TResult].GetResult () [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0
11-02 14:11:29.976 E/mono-rt ( 2954): at System.Net.Http.HttpClientHandler+d__63.MoveNext () [0x00450] in <7736395a6c71409691a34accfc621095>:0
11-02 14:11:29.976 E/mono-rt ( 2954): --- End of inner exception stack trace ---
Please suggest me the solution to get response

Answer 1

client.BaseAddress = new Uri("http://test.propertytaxapi.com/api/");
Add backslash at the end of Base address. Try the above uri