Uploading image in MVC .NET core using EF [closed] - entity-framework

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How can i create database using EF with info and picture as column in db? Also I need to upload image into local db. I started building app with Microsoft's tutorial where you upload "movie".
https://learn.microsoft.com/en-us/aspnet/core/tutorials/first-mvc-app/start-mvc?tabs=aspnetcore2x
How can i show some photo from db even hardcoded like in example like this (SeedData.cs)?

Answer 1

Your Image Model Class :
public class YourImageModel
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
public byte[] Image { get; set; }
}
In the Controller :
public async Task<IActionResult> UploadImage(YourImageModel yourImageModel, IFormFile imageToBeUploaded)
{
if (!ModelState.IsValid)
{
return View(yourImageModel);
}
if (imageToBeUploaded != null)
{
using (var memoryStream = new MemoryStream())
{
await imageToBeUploaded.CopyToAsync(memoryStream);
var imageToBeUploadedByteArray = memoryStream.ToArray();
yourImageModel.Image= imageToBeUploadedByteArray ;
}
}
_dbContext.YourImageModel.Add(yourImageModel)
await _dbContext.SaveChangesAsync();
return View();
}

Answer 2

your question is very broad but I will attempt to answer the main points.
for creating a table to store the image you need an entity like:
public class ImageEntity
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
public string ImageInfo { get; set; }
public byte[] Image { get; set; }
}
to upload your image you need to convert it to a byte[] first then it is the same as adding any object to a table once its in the right format. to convert the to a byte[] you can use something like
public byte[] BitmapToByteArray(Bitmap image)
{
//converts bitmap to byteArray
byte[] byteArray;
using (MemoryStream memoryStream = new MemoryStream())
{
image.Compress(Bitmap.CompressFormat.Png, 0, memoryStream);
byteArray = memoryStream.ToArray();
}
return byteArray;
}