I have searched and lot and done some code Which I don't know if I am doing right..
I also Looked at ImageReizer but it saves the resized Images in the folder. Idon't want to save the Image.
Here is My Controller Action
[HttpGet]
[Route("GetFile")]
public IHttpActionResult GetFile(string filename, int w = 0, int h = 0)
{
//string filePath = "fdsafsa";
//int width = 0;
//var fileStream = File.Open("/ProjectFiles", FileMode.Open);
//var content = new StreamContent(fileStream);
//content.Headers.ContentType = new MediaTypeHeaderValue("png");
var imageFile = HttpContext.Current.Server.MapPath(@filename);
if(File.Exists(imageFile))
{
var srcImage = Image.FromFile(imageFile);
var newImage = new Bitmap(w, h);
var graphics = Graphics.FromImage(newImage);
var stream = new MemoryStream();
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.DrawImage(srcImage, new Rectangle(0, 0, w, h));
newImage.Save(stream, ImageFormat.Png);
//var content = new StreamContent(stream);
HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
result.Content = new ByteArrayContent(stream.ToArray());
result.Content.Headers.ContentType = new MediaTypeHeaderValue("image/png");
return Ok(result);
}
This is the html where I want to render the Image
<img src="/api/Public/GetFile?filename=/ProjectFiles/Project_2087/art-therapy-career2_73937984-7e03-4067-91bf-2dd4fc10b328.jpg&w=100&h=100" alt="image" />
How can I show the resized Image dynamically without storing the resize image on the server. I don't want to save the resize Images.
I need help soon.
Thanks for your help.
Another approach ......
[HttpGet]
[Route("GetFileStream")]
public IHttpActionResult GetFileStream(string filename, int w = 0, int h = 0)
{
var imagePath = HttpContext.Current.Server.MapPath(@filename);
var result = getResizedImage(imagePath, w, h);
return Ok(result);
}
byte[] getResizedImage(String path, int width, int height)
{
Bitmap imgIn = new Bitmap(path);
double y = imgIn.Height;
double x = imgIn.Width;
double factor = 1;
if (width > 0)
{
factor = width / x;
}
else if (height > 0)
{
factor = height / y;
}
System.IO.MemoryStream outStream = new System.IO.MemoryStream();
Bitmap imgOut = new Bitmap((int)(x * factor), (int)(y * factor));
Graphics g = Graphics.FromImage(imgOut);
g.Clear(Color.White);
g.DrawImage(imgIn, new Rectangle(0, 0, (int)(factor * x), (int)(factor * y)), new Rectangle(0, 0, (int)x, (int)y), GraphicsUnit.Pixel);
imgOut.Save(outStream, getImageFormat(path));
return outStream.ToArray();
}
**
This is the Working Code with Mvc
**
This is the code I found working for Simple Mvc Application
An Action
public ActionResult Thumb(string filename = "Azalea.jpg", int w = 0, int h = 0)
{
string path = Path.Combine(Server.MapPath("~/images2"), filename);
//Bitmap bitmap = new Bitmap(filepath);
//if (bitmap == null)
//{
// return new EmptyResult();
//}
//MemoryStream ms = new MemoryStream();
//bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
Bitmap imgIn = new Bitmap(path);
double y = imgIn.Height;
double x = imgIn.Width;
double factor = 1;
if (w > 0)
{
factor = w / x;
}
else if (h > 0)
{
factor = h / y;
}
System.IO.MemoryStream outStream = new System.IO.MemoryStream();
Bitmap imgOut = new Bitmap((int)(x * factor), (int)(y * factor));
Graphics g = Graphics.FromImage(imgOut);
g.Clear(Color.White);
g.DrawImage(imgIn, new Rectangle(0, 0, (int)(factor * x), (int)(factor * y)), new Rectangle(0, 0, (int)x, (int)y), GraphicsUnit.Pixel);
imgOut.Save(outStream, getImageFormat(path));
outStream.Seek(0, SeekOrigin.Begin);
FileStreamResult fileStreamResult = new FileStreamResult(outStream, "image/png");
return fileStreamResult;
}
In cshtml page
<img src="~/Home/Thumb/@Model.ImageName?w=700&h=300" alt="image" />
How to use this With web Api2 ?
Answer of My Question after long search.Please Improve this
[HttpGet]
[Route("GetFileStream")]
public IHttpActionResult GetFileStream(string filename, int w = 0, int h = 0)
{
var imagePath = HttpContext.Current.Server.MapPath(@filename);
return new FileResult(imagePath, w, h, "image/jpeg");
}
public class FileResult : IHttpActionResult
{
private readonly string filePath;
private readonly string contentType;
private readonly int width;
private readonly int height;
public FileResult(string filePath, int width, int height, string contentType = null)
{
this.filePath = filePath;
this.contentType = contentType;
this.width = width;
this.height = height;
}
public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
{
return Task.Run(() =>
{
var result = getResizedImage(filePath, width, height);
var response = new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new ByteArrayContent(result)
//Content = new StreamContent(File.OpenRead(filePath))
};
var contentType = this.contentType ?? MimeMapping.GetMimeMapping(Path.GetExtension(filePath));
response.Content.Headers.ContentType = new MediaTypeHeaderValue(contentType);
return response;
}, cancellationToken);
}
}
static byte[] getResizedImage(String path, int width, int height)
{
Bitmap imgIn = new Bitmap(path);
double y = imgIn.Height;
double x = imgIn.Width;
double factor = 1;
if (width > 0)
{
factor = width / x;
}
else if (height > 0)
{
factor = height / y;
}
System.IO.MemoryStream outStream = new System.IO.MemoryStream();
Bitmap imgOut = new Bitmap((int)(x * factor), (int)(y * factor));
Graphics g = Graphics.FromImage(imgOut);
g.Clear(Color.White);
g.DrawImage(imgIn, new Rectangle(0, 0, (int)(factor * x), (int)(factor * y)), new Rectangle(0, 0, (int)x, (int)y), GraphicsUnit.Pixel);
imgOut.Save(outStream, getImageFormat(path));
//outStream.Seek(0, SeekOrigin.Begin);
//System.Web.Mvc.FileStreamResult fileStreamResult = new System.Web.Mvc.FileStreamResult(outStream, "image/png");
//return fileStreamResult;
return outStream.ToArray();
}
string getContentType(String path)
{
switch (Path.GetExtension(path))
{
case ".bmp": return "Image/bmp";
case ".gif": return "Image/gif";
case ".jpg": return "Image/jpeg";
case ".png": return "Image/png";
default: break;
}
return "";
}
static ImageFormat getImageFormat(String path)
{
switch (Path.GetExtension(path))
{
case ".bmp": return ImageFormat.Bmp;
case ".gif": return ImageFormat.Gif;
case ".jpg": return ImageFormat.Jpeg;
case ".png": return ImageFormat.Png;
default: break;
}
return ImageFormat.Jpeg;
}
Please Help in improving this answer,
Thanks, Sanuj
