C# - REST Error?

Downloaded a Sample App.  I am using VS2015.  The app doesn't compile.  I am receiving what seems to be a REST error.

CS1503      Argument 2: cannot convert from 'System.Action<System.IO.Stream>' to 'byte[]'      Tradovate.Services      

The error is occurring at

                request.AddFile(param.Value.Name.ToString(), param.Value.Writer,
                                param.Value.FileName.ToString(), param.Value.ContentType.ToString());

In the below code.
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Text.RegularExpressions;
using System.IO;
using System.Web;
using System.Linq;
using System.Net;
using System.Text;
using Newtonsoft.Json;
using RestSharp;

namespace Tradovate.Services.Client
{
    /// <summary>
    /// API client is mainly responsible for making the HTTP call to the API backend.
    /// </summary>
    public partial class ApiClient
    {
        private JsonSerializerSettings serializerSettings = new JsonSerializerSettings
        {
            ConstructorHandling = ConstructorHandling.AllowNonPublicDefaultConstructor
        };

        /// <summary>
        /// Allows for extending request processing for <see cref="ApiClient"/> generated code.
        /// </summary>
        /// <param name="request">The RestSharp request object</param>
        partial void InterceptRequest(IRestRequest request);

        /// <summary>
        /// Allows for extending response processing for <see cref="ApiClient"/> generated code.
        /// </summary>
        /// <param name="request">The RestSharp request object</param>
        /// <param name="response">The RestSharp response object</param>
        partial void InterceptResponse(IRestRequest request, IRestResponse response);

        /// <summary>
        /// Initializes a new instance of the <see cref="ApiClient" /> class
        /// with default configuration and base path (https://live-api-d.tradovate.com/v1).
        /// </summary>
        public ApiClient()
        {
            Configuration = Configuration.Default;
            RestClient = new RestClient("https://live-api-d.tradovate.com/v1");
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ApiClient" /> class
        /// with default base path (https://live-api-d.tradovate.com/v1).
        /// </summary>
        /// <param name="config">An instance of Configuration.</param>
        public ApiClient(Configuration config = null)
        {
            if (config == null)
                Configuration = Configuration.Default;
            else
                Configuration = config;

            RestClient = new RestClient("https://live-api-d.tradovate.com/v1");
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ApiClient" /> class
        /// with default configuration.
        /// </summary>
        /// <param name="basePath">The base path.</param>
        public ApiClient(String basePath = "https://live-api-d.tradovate.com/v1")
        {
           if (String.IsNullOrEmpty(basePath))
                throw new ArgumentException("basePath cannot be empty");

            RestClient = new RestClient(basePath);
            Configuration = Configuration.Default;
        }

        /// <summary>
        /// Gets or sets the default API client for making HTTP calls.
        /// </summary>
        /// <value>The default API client.</value>
        [Obsolete("ApiClient.Default is deprecated, please use 'Configuration.Default.ApiClient' instead.")]
        public static ApiClient Default;

        /// <summary>
        /// Gets or sets the Configuration.
        /// </summary>
        /// <value>An instance of the Configuration.</value>
        public Configuration Configuration { get; set; }

        /// <summary>
        /// Gets or sets the RestClient.
        /// </summary>
        /// <value>An instance of the RestClient</value>
        public RestClient RestClient { get; set; }

        // Creates and sets up a RestRequest prior to a call.
        private RestRequest PrepareRequest(
            String path, RestSharp.Method method, Dictionary<String, String> queryParams, Object postBody,
            Dictionary<String, String> headerParams, Dictionary<String, String> formParams,
            Dictionary<String, FileParameter> fileParams, Dictionary<String, String> pathParams,
            String contentType)
        {
            var request = new RestRequest(path, method);

            // add path parameter, if any
            foreach(var param in pathParams)
                request.AddParameter(param.Key, param.Value, ParameterType.UrlSegment);

            // add header parameter, if any
            foreach(var param in headerParams)
                request.AddHeader(param.Key, param.Value);

            // add query parameter, if any
            foreach(var param in queryParams)
                request.AddQueryParameter(param.Key, param.Value);

            // add form parameter, if any
            foreach(var param in formParams)
                request.AddParameter(param.Key, param.Value);

            // add file parameter, if any
            foreach(var param in fileParams)
            {
                request.AddFile(param.Value.Name.ToString(), param.Value.Writer, 
                                param.Value.FileName.ToString(), param.Value.ContentType.ToString());
            }

            if (postBody != null) // http body (model or byte[]) parameter
            {
                if (postBody.GetType() == typeof(String))
                {
                    request.AddParameter("application/json", postBody, ParameterType.RequestBody);
                }
                else if (postBody.GetType() == typeof(byte[]))
                {
                    request.AddParameter(contentType, postBody, ParameterType.RequestBody);
                }
            }

            return request;
        }

        /// <summary>
        /// Makes the HTTP request (Sync).
        /// </summary>
        /// <param name="path">URL path.</param>
        /// <param name="method">HTTP method.</param>
        /// <param name="queryParams">Query parameters.</param>
        /// <param name="postBody">HTTP body (POST request).</param>
        /// <param name="headerParams">Header parameters.</param>
        /// <param name="formParams">Form parameters.</param>
        /// <param name="fileParams">File parameters.</param>
        /// <param name="pathParams">Path parameters.</param>
        /// <param name="contentType">Content Type of the request</param>
        /// <returns>Object</returns>
        public Object CallApi(
            String path, RestSharp.Method method, Dictionary<String, String> queryParams, Object postBody,
            Dictionary<String, String> headerParams, Dictionary<String, String> formParams,
            Dictionary<String, FileParameter> fileParams, Dictionary<String, String> pathParams,
            String contentType)
        {
            var request = PrepareRequest(
                path, method, queryParams, postBody, headerParams, formParams, fileParams,
                pathParams, contentType);

            // set timeout
            RestClient.Timeout = Configuration.Timeout;
            // set user agent
            RestClient.UserAgent = Configuration.UserAgent;

            InterceptRequest(request);
            var response = RestClient.Execute(request);
            InterceptResponse(request, response);

            return (Object) response;
        }
        /// <summary>
        /// Makes the asynchronous HTTP request.
        /// </summary>
        /// <param name="path">URL path.</param>
        /// <param name="method">HTTP method.</param>
        /// <param name="queryParams">Query parameters.</param>
        /// <param name="postBody">HTTP body (POST request).</param>
        /// <param name="headerParams">Header parameters.</param>
        /// <param name="formParams">Form parameters.</param>
        /// <param name="fileParams">File parameters.</param>
        /// <param name="pathParams">Path parameters.</param>
        /// <param name="contentType">Content type.</param>
        /// <returns>The Task instance.</returns>
        public async System.Threading.Tasks.Task<Object> CallApiAsync(
            String path, RestSharp.Method method, Dictionary<String, String> queryParams, Object postBody,
            Dictionary<String, String> headerParams, Dictionary<String, String> formParams,
            Dictionary<String, FileParameter> fileParams, Dictionary<String, String> pathParams,
            String contentType)
        {
            var request = PrepareRequest(
                path, method, queryParams, postBody, headerParams, formParams, fileParams,
                pathParams, contentType);
            InterceptRequest(request);
            var response = await RestClient.ExecuteTaskAsync(request);
            InterceptResponse(request, response);
            return (Object)response;
        }

        /// <summary>
        /// Escape string (url-encoded).
        /// </summary>
        /// <param name="str">String to be escaped.</param>
        /// <returns>Escaped string.</returns>
        public string EscapeString(string str)
        {
            return UrlEncode(str);
        }

        /// <summary>
        /// Create FileParameter based on Stream.
        /// </summary>
        /// <param name="name">Parameter name.</param>
        /// <param name="stream">Input stream.</param>
        /// <returns>FileParameter.</returns>
        public FileParameter ParameterToFile(string name, Stream stream)
        {
            if (stream is FileStream)
                return FileParameter.Create(name, ReadAsBytes(stream), Path.GetFileName(((FileStream)stream).Name));
            else
                return FileParameter.Create(name, ReadAsBytes(stream), "no_file_name_provided");
        }

        /// <summary>
        /// If parameter is DateTime, output in a formatted string (default ISO 8601), customizable with Configuration.DateTime.
        /// If parameter is a list, join the list with ",".
        /// Otherwise just return the string.
        /// </summary>
        /// <param name="obj">The parameter (header, path, query, form).</param>
        /// <returns>Formatted string.</returns>
        public string ParameterToString(object obj)
        {
            if (obj is DateTime)
                // Return a formatted date string - Can be customized with Configuration.DateTimeFormat
                // Defaults to an ISO 8601, using the known as a Round-trip date/time pattern ("o")
                // https://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx#Anchor_8
                // For example: 2009-06-15T13:45:30.0000000
                return ((DateTime)obj).ToString (Configuration.DateTimeFormat);
            else if (obj is DateTimeOffset)
                // Return a formatted date string - Can be customized with Configuration.DateTimeFormat
                // Defaults to an ISO 8601, using the known as a Round-trip date/time pattern ("o")
                // https://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx#Anchor_8
                // For example: 2009-06-15T13:45:30.0000000
                return ((DateTimeOffset)obj).ToString (Configuration.DateTimeFormat);
            else if (obj is IList)
            {
                var flattenedString = new StringBuilder();
                foreach (var param in (IList)obj)
                {
                    if (flattenedString.Length > 0)
                        flattenedString.Append(",");
                    flattenedString.Append(param);
                }
                return flattenedString.ToString();
            }
            else
                return Convert.ToString (obj);
        }

        /// <summary>
        /// Deserialize the JSON string into a proper object.
        /// </summary>
        /// <param name="response">The HTTP response.</param>
        /// <param name="type">Object type.</param>
        /// <returns>Object representation of the JSON string.</returns>
        public object Deserialize(IRestResponse response, Type type)
        {
            IList<Parameter> headers = response.Headers;
            if (type == typeof(byte[])) // return byte array
            {
                return response.RawBytes;
            }

            if (type == typeof(Stream))
            {
                if (headers != null)
                {
                    var filePath = String.IsNullOrEmpty(Configuration.TempFolderPath)
                        ? Path.GetTempPath()
                        : Configuration.TempFolderPath;
                    var regex = new Regex(@"Content-Disposition=.*filename=['""]?([^'""\s]+)['""]?$");
                    foreach (var header in headers)
                    {
                        var match = regex.Match(header.ToString());
                        if (match.Success)
                        {
                            string fileName = filePath + SanitizeFilename(match.Groups[1].Value.Replace("\"", "").Replace("'", ""));
                            File.WriteAllBytes(fileName, response.RawBytes);
                            return new FileStream(fileName, FileMode.Open);
                        }
                    }
                }
                var stream = new MemoryStream(response.RawBytes);
                return stream;
            }

            if (type.Name.StartsWith("System.Nullable`1[[System.DateTime")) // return a datetime object
            {
                return DateTime.Parse(response.Content,  null, System.Globalization.DateTimeStyles.RoundtripKind);
            }

            if (type == typeof(String) || type.Name.StartsWith("System.Nullable")) // return primitive type
            {
                return ConvertType(response.Content, type);
            }

            // at this point, it must be a model (json)
            try
            {
                return JsonConvert.DeserializeObject(response.Content, type, serializerSettings);
            }
            catch (Exception e)
            {
                throw new ApiException(500, e.Message);
            }
        }

        /// <summary>
        /// Serialize an input (model) into JSON string
        /// </summary>
        /// <param name="obj">Object.</param>
        /// <returns>JSON string.</returns>
        public String Serialize(object obj)
        {
            try
            {
                return obj != null ? JsonConvert.SerializeObject(obj) : null;
            }
            catch (Exception e)
            {
                throw new ApiException(500, e.Message);
            }
        }

        /// <summary>
        /// Select the Content-Type header's value from the given content-type array:
        /// if JSON exists in the given array, use it;
        /// otherwise use the first one defined in 'consumes'
        /// </summary>
        /// <param name="contentTypes">The Content-Type array to select from.</param>
        /// <returns>The Content-Type header to use.</returns>
        public String SelectHeaderContentType(String[] contentTypes)
        {
            if (contentTypes.Length == 0)
                return null;

            if (contentTypes.Contains("application/json", StringComparer.OrdinalIgnoreCase))
                return "application/json";

            return contentTypes[0]; // use the first content type specified in 'consumes'
        }

        /// <summary>
        /// Select the Accept header's value from the given accepts array:
        /// if JSON exists in the given array, use it;
        /// otherwise use all of them (joining into a string)
        /// </summary>
        /// <param name="accepts">The accepts array to select from.</param>
        /// <returns>The Accept header to use.</returns>
        public String SelectHeaderAccept(String[] accepts)
        {
            if (accepts.Length == 0)
                return null;

            if (accepts.Contains("application/json", StringComparer.OrdinalIgnoreCase))
                return "application/json";

            return String.Join(",", accepts);
        }

        /// <summary>
        /// Encode string in base64 format.
        /// </summary>
        /// <param name="text">String to be encoded.</param>
        /// <returns>Encoded string.</returns>
        public static string Base64Encode(string text)
        {
            return System.Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(text));
        }

        /// <summary>
        /// Dynamically cast the object into target type.
        /// Ref: http://stackoverflow.com/questions/4925718/c-dynamic-runtime-cast
        /// </summary>
        /// <param name="source">Object to be casted</param>
        /// <param name="dest">Target type</param>
        /// <returns>Casted object</returns>
        public static dynamic ConvertType(dynamic source, Type dest)
        {
            return Convert.ChangeType(source, dest);
        }

        /// <summary>
        /// Convert stream to byte array
        /// Credit/Ref: http://stackoverflow.com/a/221941/677735
        /// </summary>
        /// <param name="input">Input stream to be converted</param>
        /// <returns>Byte array</returns>
        public static byte[] ReadAsBytes(Stream input)
        {
            byte[] buffer = new byte[16*1024];
            using (MemoryStream ms = new MemoryStream())
            {
                int read;
                while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
                {
                    ms.Write(buffer, 0, read);
                }
                return ms.ToArray();
            }
        }

        /// <summary>
        /// URL encode a string
        /// Credit/Ref: https://github.com/restsharp/RestSharp/blob/master/RestSharp/Extensions/StringExtensions.cs#L50
        /// </summary>
        /// <param name="input">String to be URL encoded</param>
        /// <returns>Byte array</returns>
        public static string UrlEncode(string input)
        {
            const int maxLength = 32766;

            if (input == null)
            {
                throw new ArgumentNullException("input");
            }

            if (input.Length <= maxLength)
            {
                return Uri.EscapeDataString(input);
            }

            StringBuilder sb = new StringBuilder(input.Length * 2);
            int index = 0;

            while (index < input.Length)
            {
                int length = Math.Min(input.Length - index, maxLength);
                string subString = input.Substring(index, length);

                sb.Append(Uri.EscapeDataString(subString));
                index += subString.Length;
            }

            return sb.ToString();
        }

        /// <summary>
        /// Sanitize filename by removing the path
        /// </summary>
        /// <param name="filename">Filename</param>
        /// <returns>Filename</returns>
        public static string SanitizeFilename(string filename)
        {
            Match match = Regex.Match(filename, @".*[/\\](.*)$");

            if (match.Success)
            {
                return match.Groups[1].Value;
            }
            else
            {
                return filename;
            }
        }
    }
}

Open in new window


Any ideas?
LVL 2
CipherISAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

käµfm³d 👽Commented:
Nope, that's just a regular old C# error. Your code is attempting to pass the wrong type. You need to figure out how to turn a param.Value.Writer into a byte array...or find a different overload of that method to use.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
CipherISAuthor Commented:
Thx
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C

From novice to tech pro — start learning today.