Unplanned
Last Updated:
20 Nov 2013 15:58
by Keith
Created by:
Keith
Comments:
0
Category:
BinaryImage
Type:
Feature Request
I'd like to be able to instantiate and databind a RadBinaryImage, then call a "GetUri" method on the instance to get the WebResource URI that would be generated in markup if the control were added to the page. In a particular use case, this would allow putting the URI in a meta tag for OpenGraph calls. An additional API method that would be handy would be a "handler" mode that would allow instantiation of a RadBinaryImage in a custom IHttpHandler implementation, and then serving that request from the final image (after scaling and cropping) generated by the RadBinaryImage control. I could see this taking two forms: * GetMimeType and GetBytes methods, which could be used to manually populate the Response. * a Respond method which would take an HttpContext argument, and would set appropriate headers, stream the image, and end the request itself.
Unplanned
Last Updated:
07 Apr 2020 16:26
by ADMIN
Created by:
Margo Noreen
Comments:
0
Category:
BinaryImage
Type:
Bug Report
The same is observed with the Thumbnail images in the RadImageGallery, which actually use such BinaryImages.
Reproduction
Note: The attached image should be the only file in a "Images" in the root of the application
protected void Page_Load(object sender, EventArgs e)
{
var binary = new RadBinaryImage();
binary.AutoAdjustImageControlSize = false;
binary.ResizeMode = BinaryImageResizeMode.Crop;
binary.ID = "BinaryImage";
binary.Width = Unit.Pixel(100);
binary.Height = Unit.Pixel(100);
var path = Directory.EnumerateFiles(Server.MapPath("~/Images")).First();
binary.DataValue = File.ReadAllBytes(path);
Form.Controls.Add(binary);
}
Why this is happening
This seems to be a known issue with some images and their EXIF information regarding the rotation. Detailed information on this matter and a solution could be found in the following forum thread:Workaround
protected void Page_Load(object sender, EventArgs e)
{
var binary = new RadBinaryImage();
binary.ID = "BinaryImage1";
binary.ResizeMode = BinaryImageResizeMode.Crop;
binary.Width = Unit.Pixel(100);
binary.Height = Unit.Pixel(100);
var path = Directory.EnumerateFiles(Server.MapPath("~/Images")).First();
binary.DataValue = ImagePathToByteArray(path);
//binary.DataValue = File.ReadAllBytes(path);
Form.Controls.Add(binary);
}public byte[] ImagePathToByteArray(string path)
{
System.Drawing.Image img = Bitmap.FromFile(path);
if (Array.IndexOf(img.PropertyIdList, 274) > -1)
{
var orientation = (int)img.GetPropertyItem(274).Value[0];
switch (orientation)
{
case 1:
// No rotation required.
break;
case 2:
img.RotateFlip(RotateFlipType.RotateNoneFlipX);
break;
case 3:
img.RotateFlip(RotateFlipType.Rotate180FlipNone);
break;
case 4:
img.RotateFlip(RotateFlipType.Rotate180FlipX);
break;
case 5:
img.RotateFlip(RotateFlipType.Rotate90FlipX);
break;
case 6:
img.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
case 7:
img.RotateFlip(RotateFlipType.Rotate270FlipX);
break;
case 8:
img.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
// This EXIF data is now invalid and should be removed.
img.RemovePropertyItem(274);
}
return ImageToByte(img);
}
public static byte[] ImageToByte(System.Drawing.Image img)
{
System.Drawing.ImageConverter converter = new System.Drawing.ImageConverter();
return (byte[])converter.ConvertTo(img, typeof(byte[]));
}