How to create a thumbnail image with C-Sharp (C#)

Picture.cshtml

@model Project.Models.PictureModel

@{
    ViewBag.Title = "PictureUpload";
}

<h2>PictureUpload</h2>

@using (Html.BeginForm("PictureUpload", "Controller", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)

    <div>
        @Html.LabelFor(model => model.PictureFile)
    </div>

    <div>
        @Html.TextBoxFor(model => model.PictureFile, new { type = "file" })
        @Html.ValidationMessageFor(model => model.PictureFile)
    </div>

    <input type="submit" />

}

@section Scripts{
    @Scripts.Render("~/bundles/jqueryval")
}

PictureModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.ComponentModel.DataAnnotations;

namespace Project.Models
{
    public class PictureModel
    {
        [Required]
        public HttpPostedFileBase PictureFile { get; set; }
    }
}

PictureUpload.cs

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult PictureUpload(PictureModel model)
{
    if (model.PictureFile.ContentLength > 0)
    {
        var fileName = Path.GetFileName(model.PictureFile.FileName);
        var filePath = Server.MapPath("/Content/Uploads");
        string savedFileName = Path.Combine(filePath,fileName);
        model.PictureFile.SaveAs(savedFileName);
        Thumbnail.Create(fileName, filePath, 100, 100, true);
    }

    return View(model);
}

Thumbnail.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;

namespace Porject.Models.Bussiness
{
    public class Thumbnail
    {
        public static void Create(string fileName, string filePath, int thumbWi, int thumbHi, bool maintainAspect)
        {
            var originalFile = Path.Combine(filePath, fileName);
            var source = Image.FromFile(originalFile);
            if (source.Width <= thumbWi && source.Height <= thumbHi) return;
            Bitmap thumbnail;

            try
            {
                int wi = thumbWi;
                int hi = thumbHi;

                if (maintainAspect)
                {
                    if (source.Width > source.Height)
                    {
                        wi = thumbWi;
                        hi = (int)(source.Height * ((decimal)thumbWi / source.Width));
                    }
                    else
                    {
                        hi = thumbHi;
                        wi = (int)(source.Width * ((decimal)thumbHi / source.Height));
                    }
                }

                thumbnail = new Bitmap(wi, hi);
                using (Graphics g = Graphics.FromImage(thumbnail))
                {
                    g.InterpolationMode = InterpolationMode.HighQualityBicubic;
                    g.FillRectangle(Brushes.Transparent, 0, 0, wi, hi);
                    g.DrawImage(source, 0, 0, wi, hi);
                }

                var thumbnailName = Path.Combine(filePath, "thmbnail_" + fileName);
                thumbnail.Save(thumbnailName);
            }
            catch
            {

            }
        }
    }
}