API endpoint : resize the image and return it back

Vaibhav Singh

Hi All,

I am looking ahead to develop a WEBAPI EndPoint which accepts an Image, Resize it and return it back.

Please find the minute details below.

API Request Parameters

a)A Design ID of the Image,
b)Image Type
c)@ItemType parameter (Need to actually use it in a function called GetItemLocation)

Explanation of Function dbo.fn_GetItemLocation

This Function would pull the design location on the network based on @ItemType parameter and return the URI Filepath using which we would grab the design Image, resize it(Lets say any small size) and return it.

So Below are the contents which I want to return

API Response Parameters

a)Design ID
b)Blob with the file contents (resized)
c)field that states if it is a PNG or JPEG

What Would API Consumer do ?

Consumer would get the image for a design ID and then renders it and use it in whatever way he wants.

Please note that I just need any article or any guidance so that I can approach to start this thing up.

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Salman Beg7y ago
Accepted answer
Hi.
First of all, When you will create WebApi at that time you need to take one parameter as byte[]. By using those byte[] you need to convert into an image and need to save in a path.
For converting byte[] to image and save in a path you can use this code,
string hasil = "D:\\coba1000.jpg";
System.IO.File.WriteAllBytes(@hasil, bytestosend);
You can follow this article for more,
https://stackoverflow.com/questions/9173904/byte-array-to-image-conversion
After that next step is, you need to resize the image and for that you can follow these tutorials,
https://www.c-sharpcorner.com/blogs/resizing-image-in-c-sharp-without-losing-quality1
https://www.c-sharpcorner.com/article/resize-image-in-c-sharp/
After resizing the image, again you need to convert that image into byte[] and you need to return that byte[] in webapi.
For Converting Image into byte[] you can use this code,
public byte[] imageToByteArray(Image imageIn)
{
MemoryStream ms = new MemoryStream();
imageIn.Save(ms,System.Drawing.Imaging.ImageFormat.Gif);
return ms.ToArray();
}
For more you can follow this link,
https://stackoverflow.com/questions/9173904/byte-array-to-image-conversion
At last, the api where you will consume you need to get that byte[] and based on that you need to do processing.
Whatever, i explained here, by using this you need to do all your workaround code.
Let me know if you need any help.
Thanks.
Salman Beg7y ago
Yup Vaibhab. Thank you.
Vaibhav Singh7y ago
Hi Salman, Its working now
Vaibhav Singh7y ago
Thats Cool ! Let me consolidate everything and come up with a solution