C# 이미지 섬네일

출처 : http://ryunad.tistory.com/tag/C%23%20%EC%9D%B4%EB%AF%B8%EC%A7%80%20%EC%8D%B8%EB%84%A4%EC%9D%BC

 

 

간단하게 이미지를 하나 선택하면 선택한 이미지의 Thumbnail을 만드는 로직입니다.

윈 폼으로 만들었지만 로직부분만 재활용하면 ASP.NET이든 WPF든 어디서든 사용이 가능합니다.

 

 

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Runtime.Serialization.Formatters.Binary;

using System.IO;

namespace Ex11 
{ 
    public partial class MainForm : Form 
    { 
        private Person _person = new Person();

        public MainForm() 
        { 
            InitializeComponent(); 
        }

        private void btnLoadPicture_Click(object sender, EventArgs e) 
        { 
            //1. 파일 불러오기 
            OpenFileDialog dlg = new OpenFileDialog(); 
            if (DialogResult.OK == dlg.ShowDialog()) 
            { 
                string path = Application.StartupPath;

                string fileName = 
                    dlg.FileName.Substring( 
                    dlg.FileName.LastIndexOf("\\") + 1); 
                string filePath = 
                    Path.Combine(path, fileName); 
                int dotPosition = fileName.LastIndexOf("."); 
                string thumbnailName = 
                    fileName.Substring(0, dotPosition) + 
                    "_small" + 
                    fileName.Substring(dotPosition); 
                string thumbnailPath = 
                    Path.Combine(path, thumbnailName); 
                if (File.Exists(filePath)) 
                    File.Delete(filePath); 
                //2. 원본이미지 복사 및 thumbnail 이미지 생성 
                File.Copy(dlg.FileName, filePath); 
                Image image = 
                    Image.FromFile(filePath); 
                Image thumbnail = 
                    image.GetThumbnailImage(150, 150, null, IntPtr.Zero); 
                //picture 이미지 해제 
                if (pbPicture.Image != null) 
                { 
                    pbPicture.Image.Dispose(); 
                } 
                if (File.Exists(thumbnailPath)) 
                    File.Delete(thumbnailPath); 
                thumbnail.Save(thumbnailPath);

                //이미지 객체의 해제 
                image.Dispose(); 
                thumbnail.Dispose(); 
                //3. 이미지 표시 
                pbPicture.Image = 
                    Image.FromFile(thumbnailPath);

                _person.ImagePath = fileName; 
            } 
        }

        private void miSave_Click(object sender, EventArgs e) 
        { 
            _person.Name = txtName.Text; 
            _person.ResidentNumbers = txtResidentNumber.Text; 
            _person.BirthDate = DateTime.Parse(txtBirthDate.Text); 
            _person.Height = int.Parse(txtHeight.Text); 
            _person.Weight = int.Parse(txtWeight.Text); 
            _person.Phone = txtPhone.Text; 
            _person.Email = txtEmail.Text;

            string path = Path.Combine(Application.StartupPath, "person.dat"); ; 
            FileStream stream = new FileStream(path, FileMode.Create); 
            BinaryFormatter formatter = new BinaryFormatter(); 
            formatter.Serialize(stream, _person); 
            stream.Close();

            MessageBox.Show("저장되었습니다."); 
        }

        private void miOpen_Click(object sender, EventArgs e) 
        { 
        }

        private void MainForm_Load(object sender, EventArgs e) 
        { 
            string path = Path.Combine(Application.StartupPath,"person.dat"); 
            if (File.Exists(path)) 
            { 
                FileStream stream = new FileStream(path, FileMode.Open); 
                BinaryFormatter formatter = new BinaryFormatter(); 
                _person = (Person)formatter.Deserialize(stream); 
                txtName.Text = _person.Name; 
                txtResidentNumber.Text = _person.ResidentNumbers; 
                txtBirthDate.Text = _person.BirthDate.ToString("yyyy-MM-dd"); 
                txtHeight.Text = _person.Height.ToString(); 
                txtWeight.Text = _person.Weight.ToString(); 
                txtPhone.Text = _person.Phone; 
                txtEmail.Text = _person.Email;

                string fileName = _person.ImagePath; 
                fileName = fileName.Insert(fileName.LastIndexOf("."), "_small"); 
                string imagePath = Path.Combine(Application.StartupPath, fileName); 
                if (File.Exists(imagePath)) 
                { 
                    pbPicture.Image = Image.FromFile(imagePath); 
                } 
            } 
        } 
    } 
}

[출처] C# 이미지 섬네일|작성자 괴무리