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 — Drag and Drop
– Drag and Drop, Commented Dec 6, 2019 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
– Drag and Drop, Commented Dec 6, 2019 at 10:03

phonemyatt · Accepted Answer · 2019-12-06 09:58:37Z

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 6, 2019 at 9:58

answered Dec 6, 2019 at 6:30

phonemyatt

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6 Comments

San Tho Sh Kumar Over a year ago

while return File, i got an error 'System.IO.File' is a type but used like a variable

phonemyatt Over a year ago

typo it should be byteArray instead of buffer

San Tho Sh Kumar Over a year ago

IActionResult i got an error,the type or namespace name IActionResult could not be found

Drag and Drop Over a year ago

@SanThoShKumar, use the light bulb on the type to get the using. should be Microsoft.AspNetCore.Mvc.

San Tho Sh Kumar Over a year ago

i am creating web Api not mvc

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