Result<T>

Result.cs

using System.Collections.Generic;
using System.Linq;  

public class Result<T>
{
    public Result()
    {
        this.Errors = new Dictionary<string, string[]>();
    }

    public Result(T response)
    {
        this.Response = response;
        this.Errors = new Dictionary<string, string[]>();
    }

    public Result(Dictionary<string, string[]> errors)
    {
        this.Errors = errors;
    }

    public Result(T response, Dictionary<string, string[]> errors)
    {
        this.Response = response;
        this.Errors = errors;
    }

    public Result(T response, string parameterError, string error)
    {
        this.Response = response;
        this.Errors = new Dictionary<string, string[]>
        {
            { parameterError, new string[] { error } }
        };
    }

    public T Response { get; private set; }

    public Dictionary<string, string[]> Errors { get; private set; }

    public Result<T> AddError(string parameter, string error)
    {
        Errors.Add(parameter, new string[] { error });
        return this;
    }

    public Result<T> AddError(string parameter, string[] errors)
    {
        Errors.Add(parameter, errors);
        return this;
    }

    public bool ContainErrorDescription(string errorDescription)
    {
        return this.Errors.Values.Contains(new string[] { errorDescription });
    }
}