how to fetch image in server in c# for web Api?

Question

i am creating web Api for retrieve image from server folder,in c# , i need code for that, thanks in advance,

[HttpPost]
[Route("Fileretrive")]
public void retrive(string filename)
{
    //var ctx = HttpContext.Current;
    var root = HttpContext.Current.Server.MapPath("~/Photos");
    var tempath = Path.Combine(root,filename);
    Directory.GetFiles(tempath);
    byte[] byteArray = null;
    byteArray = System.IO.File.ReadAllBytes(tempath);

}

Does this answer your question? [How to to return an image with Web API Get method](https://stackoverflow.com/questions/39177576/how-to-to-return-an-image-with-web-api-get-method) — Drag and Drop, Dec 06 '19 at 10:01
Btw, POST is used to send data to a server and GET is for requesting data from a specified resource. 2/. Your method return void. — Drag and Drop, Dec 06 '19 at 10:03

phonemyatt · Answer 1 · 2019-12-06T09:58:37.270

0

you are nearly there. first you need to return the action result. since you are streaming byte, use file as your return.

[HttpPost]
[Route("Fileretrive")]
public IActionResult retrive(string filename)
{
    //var ctx = HttpContext.Current;
    var root = HttpContext.Current.Server.MapPath("~/Photos");
    var tempath = Path.Combine(root,filename);
    Directory.GetFiles(tempath);
    byte[] byteArray = null;
    byteArray = System.IO.File.ReadAllBytes(tempath);
    // check your mime type, and set your unique file name. maybe use DateTime for your file name
    return File(byteArray , "image/jpeg", $"{DateTime.Now.ToString("ddMMMyyyy")}.jpeg"); 

}

edited Dec 06 '19 at 09:58

answered Dec 06 '19 at 06:30

phonemyatt

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while return File, i got an error 'System.IO.File' is a type but used like a variable – San Tho Sh Kumar Dec 06 '19 at 09:57
typo it should be byteArray instead of buffer – phonemyatt Dec 06 '19 at 09:58
IActionResult i got an error,the type or namespace name IActionResult could not be found – San Tho Sh Kumar Dec 06 '19 at 10:01
@SanThoShKumar, use the light bulb on the type to get the using. should be `Microsoft.AspNetCore.Mvc`. – Drag and Drop Dec 06 '19 at 10:04
i am creating web Api not mvc – San Tho Sh Kumar Dec 06 '19 at 10:07
wait what mvc are you using? aspnetcore. mvc or asp.net mvc ? – phonemyatt Dec 06 '19 at 10:09

how to fetch image in server in c# for web Api?

1 Answers1