Bulk modify the dimensions of a picture (C #)

Project needs, often need to manually adjust the picture size, the process is too troublesome, inefficient. So write a small program to improve productivity

  
 

   
  

  
using System;
   
  

  
using System.Collections.Generic;
   
  

  
using System.Linq;
   
  

  
using System.Text;
   
  

  
using System.Threading.Tasks;
   
  

  
using System.IO;
   
  

  
using System.Drawing;
   
  

  
using System.Drawing.Imaging;
   
  

  

   
  

  
namespace ChangeImgSize
   
  

  
{
   
  

  
 class Program
   
  

  
 {
   
  

  
 static void Main(string[] args)
   
  

  
 {
   
  

  
 int num = 0;
   
  

  
 if (!System.IO.Directory.Exists("Img"))
   
  

  
 {
   
  

  
 System.IO.Directory.CreateDirectory("Img");
   
  

  
 Console.WriteLine("已创建Img目录，请把需要处理的图片放到该目录下");
   
  

  
 Console.ReadKey(true);
   
  

  
 return;
   
  

  
 }
   
  

  
 if (!System.IO.Directory.Exists("NewImg"))
   
  

  
 {
   
  

  
 System.IO.Directory.CreateDirectory("NewImg");
   
  

  
 }
   
  

  
 Console.WriteLine("请输入需要缩小的倍数");
   
  

  
 double size = Convert.ToDouble(Console.ReadLine());
   
  

  
 string[] fileStrs = System.IO.Directory.GetFiles("Img");
   
  

  
 foreach (string s in fileStrs)
   
  

  
 {
   
  

  
  system   io   fileinfo   info  =    new    system  Span class= "pun".  io   fileinfo   s    
   
  

  
 if (info.Extension == ".png" || info.Extension == ".jpg")
   
  

  
 {
   
  

  
 Image img = GetFile(s);
   
  

  
 Bitmap bit = GetNewSizeBitmap(img,size);
   
  

  
 SaveImage(bit, info.Name, info.Extension);
   
  

  
 }
   
  

  
 ++num;
   
  

  
 }
   
  

  
 Console.WriteLine("共处理：" + num + "张图片，已经保存到NewImg目录中。");
   
  

  
 Console.ReadKey(true);
   
  

  
 }
   
  

  

   
  

  
 static public Image GetFile(string path)
   
  

  
 {
   
  

  
 FileStream stream = File.OpenRead(path);
   
  

  
 int fileLength = 0;
   
  

  
 fileLength = (int)stream.Length;
   
  

  
 Byte[] image = new Byte[fileLength];
   
  

  
 stream.Read(image, 0, fileLength);
   
  

  
 System.Drawing.Image result = System.Drawing.Image.FromStream(stream);
   
  

  
 stream.Close();
   
  

  
 return result;
   
  

  
 }
   
  

  

   
  

  
 static public Bitmap GetNewSizeBitmap(Image img , double size){
   
  

  
  int   Newwidth  =    convert   toint32   ( img   width    /  size  );   
   
  

  
 int newHeight = Convert.ToInt32(img.Height / size);
   
  

  
 Size s = new Size(newWidth, newHeight);
   
  

  
 Bitmap newBit = new Bitmap(img, s);
   
  

  
 return newBit;
   
  

  
 }
   
  

  

   
  

  
 static public void SaveImage(Bitmap bit,string name,string ext)
   
  

  
 {
   
  

  
 bit.Save(@"NewImg\" + name);
   
  

  
 bit.Dispose();
   
  

  
 Console.WriteLine("已处理:" + name);
   
  

  
 }
   
  

  

   
  

  
 }
   
  

  
}
  
 

Null

Bulk modify the dimensions of a picture (C #)