public void ResizeImage(IFormFile uploadedFile, string desiredThumbPath, int desiredWidth = 0, int desiredHeight = 0)
{
string webRoot = _fileHandler.GetRootUrl();
if (uploadedFile.Length > 0)
{
using (var stream = uploadedFile.OpenReadStream())
{
var uploadedImage = System.Drawing.Image.FromStream(stream);
//decide how to scale dimensions
if (desiredHeight == 0 && desiredWidth > 0)
{
var img = uploadedImage.ScaleByWidth(desiredWidth); // returns System.Drawing.Image file
var fullPath = Path.Combine(webRoot, desiredThumbPath);
var currentFolder = _fileHandler.GetDirectoryName(fullPath);
_fileHandler.CreateDirectory(currentFolder);
img.SaveAs(fullPath);
}
else if (desiredWidth == 0 && desiredHeight > 0)
{
var img = uploadedImage.ScaleByHeight(desiredHeight); // returns System.Drawing.Image file
var fullPath = Path.Combine(webRoot, desiredThumbPath);
var currentFolder = _fileHandler.GetDirectoryName(fullPath);
_fileHandler.CreateDirectory(currentFolder);
img.SaveAs(fullPath);
}
else
{
var img = uploadedImage.Scale(desiredWidth, desiredHeight); // returns System.Drawing.Image file
var fullPath = Path.Combine(webRoot, desiredThumbPath);
var currentFolder = _fileHandler.GetDirectoryName(fullPath);
_fileHandler.CreateDirectory(currentFolder);
img.SaveAs(fullPath);
}
}
}
}