c#file-uploadasp.net-core-mvcimage-manipulation

Reputation: 964

How to upload files in ASP.NET Core?

How to upload files or images using ASP.NET MVC 6 with some model data?

For example, I have a form like this:

<form>
    <input type="file">
    <input type="text" placeholder="Image name...">
    <input type="text" placeholder="Image description...">
    <input type="submit" value="Submit">
</form>

I read many Tutorials in how to upload but I don't see anything uploading with some data like the form above.

Also, is there any library for image manipulation for re-sizing and Image Watermarking same as Codeigniter image manipulation class? (https://codeigniter.com/user_guide/libraries/image_lib.html

Upvotes: 81

Answers (8)

Ngola cttts

Reputation: 1

I use it myself, I'll give you some codes. Here I have written it in the form of an extension and you can use it in any form. I hope this helps you.

 public static class FileUploadExtension
 {
 private static bool FileIsTrue(IFormFile file)
 {
    if (file == null || file.Length == 0)
    {
        return false;
    }
    return true;
}

public static async Task<string> FileUpload(this IFormFile file, string FolderPath, int MaxFileLenght)
{
    if (FileIsTrue(file) == false)
    {
        if (file.Length > MaxFileLenght * 1024 * 1024)
        {
            throw new ArgumentException("Fayl mövcud deyil və ya boşdur.");
        }
    }

    var uploadFolder = Path.Combine(Directory.GetCurrentDirectory(), FolderPath);

    IsFolder(uploadFolder);

    var uniqueFileName = $"{Guid.NewGuid()}_{file.FileName}";
    var filePath = Path.Combine(uploadFolder, uniqueFileName);

    using (var stream = new FileStream(filePath, FileMode.Create))
    {
        await file.CopyToAsync(stream);
    }

    return uniqueFileName;
}

private static void IsFolder(string a)
{
    if (!Directory.Exists(a))
    {
        Directory.CreateDirectory(a);
    }
}

public static void IsTrueType(this IFormFile file, params string[] supportedTypes)
{
    
    var fileExt = Path.GetExtension(file.FileName).Substring(1).ToLower();

   
    if (!supportedTypes.Contains(fileExt))
    {
        throw new ArgumentException($"Fayl növü dəstəklənmir. Dəstəklənən növlər: {string.Join(", ", supportedTypes)}");
    }
}

}

Upvotes: 0

Ravafidh BackEnd

Reputation: 11

public static class FileManager
        {
            public static async Task<string> UploadImage(this IFormFile Image , string env,string folderName)
            {
                string path = env+folderName;
                if(!Directory.Exists(path))
                {
                    Directory.CreateDirectory(path);
                }
                string fileName=Image.FileName;
                fileName = Guid.NewGuid().ToString()+fileName;
                path = env+folderName+fileName;
                using(FileStream stream = new FileStream(path, FileMode.Create))
                {
                    await Image.CopyToAsync(stream);
                }
                return fileName;
            }
            public static bool CheckImage(this IFormFile Image,int size)
            {
                return Image.ContentType.Contains("image/") && Image.Length/1024/1024 < size;
            }
        }
    }

namespace Jof.Helpers
{
    public static class FileManager
    {
        public static async Task<string> UploadImage(this IFormFile Image , string env,string folderName)
        {
            string path = env+folderName;
            if(!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            string fileName=Image.FileName;
            fileName = Guid.NewGuid().ToString()+fileName;
            path = env+folderName+fileName;
            using(FileStream stream = new FileStream(path, FileMode.Create))
            {
                await Image.CopyToAsync(stream);
            }
            return fileName;
        }
        public static bool CheckImage(this IFormFile Image,int size)
        {
            return Image.ContentType.Contains("image/") && Image.Length/1024/1024 < size;
        }
}

Upvotes: 1

Life347

Reputation: 17

        foreach (var formFile in files)
        {
            if (formFile.Length > 0)
            {
                var FilePath = _configuration.GetValue<string>("FilesPath:Cases");
                string FileName = Guid.NewGuid().ToString() + Path.GetExtension(formFile.FileName);
                string SavePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot" + FilePath, FileName);

                using (var stream = System.IO.File.Create(SavePath))
                {
                    formFile.CopyTo(stream);
                }
            }
        }

Upvotes: 0

Prashant vishwakarma

Reputation: 487