如何在特定文件夹中写入图像

Question

我正在尝试在我的项目的特定目录中添加个人资料图片：~Images/ProfilePicture

_context.People.Add(person);
                _context.SaveChanges();
                if (person.ProfilePicture != null)
                {
                    string[] photoName = person.ProfilePicture.FileName.Split('.');
                    var imageName = $"{person.PersonId}.{photoName[photoName.Length - 1]}";
                    string uploaded = Path.Combine("~Images", "ProfilePicturePerson");
                    string filepath = Path.Combine(uploaded, imageName);

                    //return MagickImage
                    var profilePic = ImageStuff.HandleImage(person.ProfilePicture);
                    //error
                    profilePic.Write(imageName);
                    person.ProfilePictureName = filepath;
                }
                
                _context.SaveChanges();

我希望MagickImage.write函数在指定目录下创建文件，而不是在项目主目录下创建图片

Answer 1

你应该像这样在你的服务中引入 IHostEnvironment：

    public class Service : IService
    {
        private readonly IHostEnvironment _environment;
        
        public SftpService(IHostEnvironment environment)
        {   
            _environment = environment;
        }

        public void DownloadFile()
        {
             var _fileName = "PictureName";
             var remoteFilePath= "Path where is your image";

             //if your service is in your main proyect
             var localFilePath = Path.Combine($" 
             {_environment.ContentRootPath}\\Images\\ProfilePicture\\             
             {_fileName}");

             //if your service is in your other proyect. For example Application
             var localFilePath = 
             Path.Combine(_environment.ContentRootPath.Replace("MS.Core", 
             "MS.Aplication"), $"\\Images\\ProfilePicture\\{_fileName}");

             try
                {
                   client.Connect();
                   using var s = File.Create(localFilePath);

                   client.DownloadFile(remoteFilePath, s);
                }
                catch (Exception exception)
                {

                }
                finally
                {
                   client.Disconnect();
                }
        }
    }

此示例假设图像在某些外部服务中，但您或许可以将其作为指导。