要将图像存储到SQL Server中,可以使用以下步骤和代码示例:
CREATE TABLE Images (
Id INT IDENTITY PRIMARY KEY,
Name VARCHAR(50),
ImageData VARBINARY(MAX)
)
public class ImageData
{
public int Id { get; set; }
public string Name { get; set; }
public byte[] ImageBytes { get; set; }
}
public class ImageController : Controller
{
private readonly MyDbContext _context;
public ImageController(MyDbContext context)
{
_context = context;
}
public IActionResult Index()
{
List images = _context.Images.ToList();
return View(images);
}
[HttpPost]
public async Task Upload(IFormFile file)
{
if (file != null && file.Length > 0)
{
using (var memoryStream = new MemoryStream())
{
await file.CopyToAsync(memoryStream);
ImageData image = new ImageData
{
Name = file.FileName,
ImageBytes = memoryStream.ToArray()
};
_context.Images.Add(image);
await _context.SaveChangesAsync();
}
}
return RedirectToAction("Index");
}
}
@model List
Name
Image
@foreach (var image in Model)
{
@image.Name

}
public class ImageController : Controller
{
// ...
public IActionResult GetImage(int id)
{
ImageData image = _context.Images.FirstOrDefault(i => i.Id == id);
if (image != null)
{
return File(image.ImageBytes, "image/jpeg"); // 根据实际图像类型设置正确的Content-Type
}
return NotFound();
}
}
这样,你就可以将图像上传到SQL Server并从数据库中检索它们了。