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can't use replace function when upload files API on asp.net core 2.2

I work on ASP.NET Core 2.2 Web API and face an issue: I can't use replace function to change the name property of a selected file that I get when uploaded.
When I try like this:
string fileName = DisplayFileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";
I get an error
Iform file doesn't contain definition for replace and no accessible extension method Replace accepting first argument of iformfile
Full sample is here:
[HttpPost, DisableRequestSizeLimit]
public IActionResult Upload()
{
try
{
var DisplayFileName = Request.Form.Files[0];
string fileName = DisplayFileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";
string Month = DateTime.Now.Month.ToString();
string DirectoryCreate = myValue1 + Month;
Path.Combine(Directory.GetCurrentDirectory(), folderName);
if (!Directory.Exists(DirectoryCreate))
{
Directory.CreateDirectory(DirectoryCreate);
}
if (DisplayFileName.Length > 0)
{
var filedata = ContentDispositionHeaderValue.Parse(Request.Form.Files[0].ContentDisposition).FileName.Trim('"');
var dbPath = Path.Combine(DirectoryCreate, fileName);
using (var stream = new FileStream(dbPath, FileMode.Create))
{
Request.Form.Files[0].CopyTo(stream);
}
return Ok(new { dbPath });
}
else
{
return BadRequest();
}
}
catch (Exception ex)
{
return StatusCode(500, $"Internal server error: {ex}");
}
}
How to solve this issue?
sample
suppose i select file developed.xlsx
then after use replace or any way result will be
developed-sddfn78888.xlsx

You can use System.IO.Path to get filename and get file extension from request files.
Change this
string fileName = DisplayFileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";
To
string filename = Path.GetFileName(DisplayFileName.FileName);
string fileExtension = Path.GetExtension(DisplayFileName.FileName);
string newFileName = $"{filename}-{Guid.NewGuid().ToString()}{fileExtension}";
Otherwise, you could modify your code to
string fileName = DisplayFileName.FileName.Replace(".xlsx", "-") + Guid.NewGuid().ToString() + ".xlsx";

Cannot upload file from form .NET

I'm trying to upload data (image) from form to my .NET App. It saves the Path to the database correctly, but the images are not saved under "wwwroot/images". I will be grateful for your help.
public async Task<IActionResult> Create([Bind("Id,Brand,Model,Description,Price,ImageUrl,CategoryId")] Car car)
{
if (ModelState.IsValid)
{
string webRootPath = _hostEnvironment.WebRootPath;
var files = HttpContext.Request.Form.Files;
if (files.Count > 0)
{
string fileName = Guid.NewGuid().ToString();
var uploads = Path.Combine(webRootPath, "images");
var extenstion = Path.GetExtension(files[0].FileName);
var filePath = Path.Combine(uploads, fileName, extenstion);
car.ImageUrl = "images" + "\\" + fileName + extenstion;
using (var filesStreams = new FileStream(filePath, FileMode.Create))
{
files[0].CopyTo(filesStreams);
}
}
_context.Add(car);
await _context.SaveChangesAsync();
return RedirectToAction(nameof(Index));
}
ViewData["CategoryId"] = new SelectList(_context.Categories, "Id", "Name", car.CategoryId);
return View(car);
}

How to Update Image path and save it back to database

Here I add product and save path of image, everything works fine and image path is saved
public ActionResult AddProduct(Product p, HttpPostedFileBase prodImg, decimal[] price)
{
try
{
string absoluthFolderPath = Server.MapPath("\\Images");
string pathOfImage = System.IO.Path.GetExtension(prodImg.FileName);
string newFileName = Guid.NewGuid() + pathOfImage;
absoluthFolderPath += "\\" + newFileName;
prodImg.SaveAs(absoluthFolderPath);
string relitivePath = #"\Images\" + newFileName;
p.ImagePath = relitivePath;
p.Blocked = false;
new ProductsBL().AddProduct(p);
ViewData\["msg"\] = "Successfuly";
}
catch(Exception ex)
{
}
ModelState.Clear();
return View();
}
When trying to update image path it gives me error shown on screenshot
public ActionResult Update(Product modifieDetails, HttpPostedFileBase updImg)
{
string absoluthFolderPath = Server.MapPath("\\Images");
string pathOfImage = System.IO.Path.GetExtension(updImg.FileName);
string newFileName = Guid.NewGuid() + pathOfImage;
absoluthFolderPath += "\\" + newFileName;
updImg.SaveAs(absoluthFolderPath);
string relitivePath = #"\Images\" + newFileName;
modifieDetails.ImagePath = relitivePath;
modifieDetails.Blocked = false;
new ProductsBL().UpdateProduct(modifieDetails);
return RedirectToAction("ListProduct");
}
[1]: http://i.stack.imgur.com/wgE88.png

You need to split this up:
new ProductsBL().AddProduct(p);
In order to save updates to an entity back to the store, you have to set "IsModified" on the entity, and then save the context. Like so...
using (ProductsBL context = new ProductsBL()) {
var p = (some query to get it from the store);
p.ImagePath = relitivePath;
p.Blocked = false;
p.IsModified = true;
context.SaveChanges();
}
As it is, you're creating a new entity and adding that to the store, not updating the existing one.
And, if you're coding in English, please fix the spellings: Modify, Relative, absolute.

Update model property in Asp.net mvc kendo ui async file upload

I have a kendo ui async file upload with the following options on my view.
<div class="demo-section">
#(Html.Kendo().Upload()
.Name("files")
.Async(a => a
.Save("Save", "Upload")
.AutoUpload(true)
)
)
</div>
In the corresponding action method ,I would like to set my model's properties for filename .Shown below is what i have currently .
public ActionResult Save(IEnumerable<HttpPostedFileBase> files)
{
// The Name of the Upload component is "files"
if (files != null)
{
foreach (var file in files)
{
// Some browsers send file names with full path.
// We are only interested in the file name.
var fileName = Path.GetFileName(file.FileName);
var physicalPath = Path.Combine(Server.MapPath("~/App_Data"), fileName);
// The files are not actually saved in this demo
// file.SaveAs(physicalPath);
}
}
// Return an empty string to signify success
return Content("");
}
If there is a way to do it ,please let me know ..

public ActionResult Save(IEnumerable<HttpPostedFileBase> files)
{
var savedFilePaths = new List<string>();
var applicationPath = System.Web.HttpContext.Current.Request.Url.Scheme + "://" + System.Web.HttpContext.Current.Request.Url.Authority + System.Web.HttpContext.Current.Request.ApplicationPath + "/Content/Images/Others/";
// The Name of the Upload component is "files"
if (files != null)
{
foreach (var file in files)
{
// Some browsers send file names with full path.
// We are only interested in the file name.
var fileName = Path.GetFileName(file.FileName);
if (fileName != null)
{
fileName = DateTime.Now.ToString("yyyyMMddmm-") + fileName;
var physicalPath = Path.Combine(Server.MapPath("~/Upload/Hotel"), fileName);
file.SaveAs(physicalPath);
savedFilePaths.Add(applicationPath + fileName);
}
}
}
// Return an empty string to signify success
return Content("");
}

How I Can Show The Image?

I Make Upload Image In Asp.Net And I Really Save The Image In The Data Base But When i Want To Make A Query To Select The Image It Return The Source Of The Image With No Image Please I Want Any One Know The Solution Please Help Me.`enter code here This Is The Controller Code:
public ActionResult UpLoadImage(HttpPostedFileBase file)
{
if (file != null)
{
UpLoadDBEntities context = new UpLoadDBEntities();
file = Request.Files[0];
string filename = file.FileName;
string contenttype = file.ContentType;
string full = filename + " " + contenttype;
//string path = System.IO.Path.Combine(
// Server.MapPath("~/images/") + file.FileName);
file.SaveAs(HttpContext.Server.MapPath("~/Images/")
+ file.FileName);
Image_table it = new Image_table();
it.Image_Path = filename;
context.Image_table.Add(it);
context.SaveChanges();
}
return View();
}
public JsonResult ShowImage()
{
UpLoadDBEntities context = new UpLoadDBEntities();
Image_table it = new Image_table();
var showimage = (from itbl in context.Image_table
where itbl.ID == 8
select new { itbl.Image_Path });
return Json(showimage , JsonRequestBehavior.AllowGet);
}

You are setting the path as
it.Image_Path = filename;
Yet it gets store on the server as
file.SaveAs(HttpContext.Server.MapPath("~/Images/")
+ file.FileName);
I hope you can see it needs to be it.Image_Path = "~/Images/" + filename;. Also, make sure folks can actually access the path through IIS.