C# resize image and save

[marcinz51839902]

Hello!

I look for a sample code that`s resize the image to lower and save it with the 12 (the highest) level quality.

I want the sample to be in .NET C#.

I was searching over the Adobe group and I didn`t find any sample.

Can you help me?

Can you paste me some C# sample?

Thank you in advance

Marcin

[SuperMerlin]

using System;
namespace PSexample
{
    class Program
    {
        static void Main(string[] args)
        {
            dynamic app = Activator.CreateInstance(Type.GetTypeFromProgID("Photoshop.Application"));
            if (app.Documents.Count == 0) return;
            app.Preferences.RulerUnits = 1; //pixels
            //resize to a width of 1000 pixels with constraint
            app.ActiveDocument.ResizeImage(1000 /*width*/, null/*height*/, 300/*resolution*/,5/* ResampleMethod.BICUBICSHARPER*/);
            string saveFile = @"c:/utils/test.jpg";
            dynamic jpgOpts = Activator.CreateInstance(Type.GetTypeFromProgID("Photoshop.JPEGSaveOptions"));
            jpgOpts.embedColorProfile = true;
            jpgOpts.formatOptions = 1 /* FormatOptions.STANDARDBASELINE*/;
            jpgOpts.matte = 1 /*MatteType.NONE*/;
            jpgOpts.quality = 12; //1-12
            app.ActiveDocument.SaveAs(saveFile, jpgOpts, true, 2); //2= lowercase
            app.ActiveDocument.Close(2); /* Close document */
        }
    }
}

Late binding example.

[marcinz51839902]

Ok. Thank you. I really apprieciate it.

But how can I open a jpg image from C# code in Adobe Photoshop.

I would like to:

a) have the filelist array of jpg files in Visual Studio Software

b) open the image file (based on the array of a) ) in Photoshop, resize it and save it to output resized jpg file.

Can you help me with opening jpg file in Photoshop based on C# filelist array ?

Thank you again.
Regards

Marcin

[SuperMerlin · Accepted solution]

using System;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
namespace PSexample
{
    class Program
    {
        static void Main(string[] args)
        {
            dynamic app = Activator.CreateInstance(Type.GetTypeFromProgID("Photoshop.Application"));
            Regex reg = new Regex(@"(?i)\.(jpg|jpeg)$"); //select jpg files only    
            //change folder to suit          
                var files = Directory.GetFiles(@"d:/a test", "*.*").Where(path => reg.IsMatch(path)).ToList();
            app.Preferences.RulerUnits = 1; //pixels
            foreach (string file in files)
            {
                app.open(file);
                string Name = app.ActiveDocument.Name;
                //resize to a width of 300 pixels with constraint
                app.ActiveDocument.ResizeImage(300 /*width*/, null/*height*/, 300/*resolution*/, 5/* ResampleMethod.BICUBICSHARPER*/);
                string saveFile = @"c:/utils/"+ Name;
                dynamic jpgOpts = Activator.CreateInstance(Type.GetTypeFromProgID("Photoshop.JPEGSaveOptions"));
                jpgOpts.embedColorProfile = true;
                jpgOpts.formatOptions = 1 /* FormatOptions.STANDARDBASELINE*/;
                jpgOpts.matte = 1 /*MatteType.NONE*/;
                jpgOpts.quality = 12; //1-12
                app.ActiveDocument.SaveAs(saveFile, jpgOpts, true, 2); //2= lowercase
                app.ActiveDocument.Close(2); /* Close document */
            }
        }
    }
}

[marcinz51839902]

Thank you I had to change the Identity from "The launching user" to "The interactive user" on the properties pane for Component services/My computer/DCOM Config/Photoshop ActionReference, because I got DCOM error.

But I have one more question to you.

How to keep aspect ration while resizing?

Regards

Marcin

[SuperMerlin]

You only supply the width or the height NOT BOTH!

app.ActiveDocument.ResizeImage(300 /*width*/, null/*height*/, 300/*resolution*/, 5/* ResampleMethod.BICUBICSHARPER*/);

As you see in this case the height has been set to null.