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Introduction

This tip covers many things simultaneously. This tip will help in understanding the directory and file dialog box, and also the progressbar control and image conversion.

Using the Code

I have used very simple and easy to understand code. I am saving PNG images at the same location from where the application is getting JPG images. This can be changed as per your requirements.

//Get all JPG files from the location provided.
private void ReadJPGFiles(string path)
{
    var files = Directory.EnumerateFiles(path).Where(p => 
    Path.GetExtension(p).ToUpper() == ".JPG" || 
    Path.GetExtension(p).ToUpper() == ".JPEG")
                                            .Select(p => Path.GetFullPath(p));

    progressBar1.Maximum = files.Count();
    progressBar1.Value = 0;
    foreach (string s in files)
    {
        ConvertToPng(s, Path.GetFileNameWithoutExtension(s));
        progressBar1.Value += 1;
    }

}
//Convert JPG image to PNG
private void ConvertToPng(string path,string fileName)
{
    Image bmpImageToConvert = Image.FromFile(path);
    bmpImageToConvert.Save(FolderPath + "\\" + 
    fileName.Trim() + ".png", ImageFormat.Png);
}
...

History

3^rd December, 2013: Initial version.

Convert JPG to PNG Format (Bulk or Single)