RestSharp PATCH API call to update Azure Devops work item throwing BAD Request

I am using RestSharp v107.

I want to update Iteration Path of a test case. I am able to update it with Postman but using RestSharp I am getting "BAD Request" - "You must pass a valid patch document in the body of the request."

Azure Devops Update Work Item Rest API

My Code:

        var client = new RestClient(@"https://dev.azure.com/krakhil/AkhilProject/_apis/wit/workitems/25?api-version=6.1-preview.3&Authorization=Basic BASE64PATSTRING");
        client.Authenticator = new HttpBasicAuthenticator("", "My_PAT_I_HAVE_GENERATED");

        var request = new RestRequest();
        request.AddHeader("Content-Type", "application / json - patch   json");

        var body = @"[
"   "\n"  
@"      {
"   "\n"  
@"        ""op"": ""add"",
"   "\n"  
@"        ""path"": ""/fields/System.IterationPath"",
"   "\n"  
@"        ""value"": ""AkhilProject\\Sprint 1""
"   "\n"  
@"      }
"   "\n"  
@"]";

        request.AddParameter("application/json-patch json", body, ParameterType.RequestBody);

        var response = client.PatchAsync(request).Result;

I have tried with "AddJSONBody", ExecuteAsync - with respective changes. Still no help.

CodePudding user response：

Sometimes it helps to just read the documentation.

All you needed to do is:

var request = new RestRequest()
    .AddStringBody(body, "application/json-patch json");

CodePudding user response：

RestSharp working code - as per input from Alexey Zimarev

var client = new RestClient(@"https://dev.azure.com/krakhil/AkhilProject/_apis/wit/workitems/25?api-version=6.1-preview.3");
        client.Authenticator = new HttpBasicAuthenticator("", "YOUR PAT");

        var request = new RestRequest();
        request.AddHeader("Content-Type", "application/json-patch json");

        var body = @"[
"   "\n"  
@"      {
"   "\n"  
@"        ""op"": ""add"",
"   "\n"  
@"        ""path"": ""/fields/System.IterationPath"",
"   "\n"  
@"        ""value"": ""AkhilProject\\Sprint 1""
"   "\n"  
@"      }
"   "\n"  
@"]";

        request.AddStringBody(body, DataFormat.Json);

        var response = client.PatchAsync(request).Result;

Working code using HTTP Client

        string personalaccesstoken = "MY_PAT";
        string organisation = "krakhil";
        string project = "AkhilProject";

        using HttpClient client = new HttpClient();

        client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));

        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic",
            Convert.ToBase64String(
                System.Text.ASCIIEncoding.ASCII.GetBytes(
                    string.Format("{0}:{1}", "", personalaccesstoken))));

        var obj = new[] { new { from = (string?)null, op = "add", path = "/fields/System.IterationPath", value = "AkhilProject\\Sprint 1" } };
        
        string serialisedObj = System.Text.Json.JsonSerializer.Serialize(obj);

        var content = new StringContent(
            serialisedObj,
            Encoding.UTF8,
            "application/json-patch json");

        HttpResponseMessage response = client.PatchAsync($"https://dev.azure.com/{organisation}/{project}/_apis/wit/workitems/25?api-version=6.1-preview.3",content).Result;

        response.EnsureSuccessStatusCode();
        string responseBody =  response.Content.ReadAsStringAsync().Result;