Loop through sub directories in directory

Question

I have a directory \'Folder\' with many subdirectories inside this directory. Inside every subdirectory there are many images. I want to loop through subdirectories in the \

Answer 1

This should list all files starting from C:\Images and go through all subdirs and their subdirs as well.

public void ExportToExcel()
{
    //for export
    var objExcelPackage = new ExcelPackage(); //create new workbook

    this.ListFiles(objExcelPackage, 0, Server.MapPath("~/Folder"));

    var filepath = new FileInfo(@"C:\Users\user\Desktop\Test\" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".xlsx");
    objExcelPackage.SaveAs(filepath);
}

public void ListFiles(ExcelPackage objExcelPackage, int worksheetIndex, string path)
{
    var imageCount = 0;
    var x = 25;
    var finalValue = 0;

    var files = Directory.GetFiles(path).Select(s => new FileInfo(s));

    if (files.Any())
    {
        //create new worksheet
        var ws = objExcelPackage.Workbook.Worksheets.Add("Worksheet" + (++worksheetIndex)); 

        foreach (var file in files)
        {
            imageCount++;

            var TEST_IMAGE = new System.Web.UI.WebControls.Image();
            var myImage = System.Drawing.Image.FromFile(img);
            var pic = ws.Drawings.AddPicture(imageCount.ToString(), myImage);

            // Row, RowoffsetPixel, Column, ColumnOffSetPixel
            if (imageCount > 1)
            {
                pic.SetPosition(finalValue, 0, 2, 0);
                finalValue += (x + 1); // Add 1 to have 1 row of empty row
            }
            else
            {
                pic.SetPosition(imageCount, 0, 2, 0);
                finalValue = (imageCount + x) + 1; // Add 1 to have 1 row of empty
            }
        }
    }

    foreach (var dir in Directory.GetDirectories(path))
    {
        this.ListFiles(objExcelPackage, worksheetIndex, dir);
    }
}