File upload in xamarin forms

Question

I want to upload image from mobile application. Here is the mobile side code

   public async Task<bool> UploadFile(string fileName,byte[] imageBytes = null)  
           {  
               bool isSuccess = false;  
               try  
               {  
                   if (imageBytes != null && imageBytes.Length > 0)  
                   {                      
                     MultipartFormDataContent imageRequest = new MultipartFormDataContent();  
                     ByteArrayContent byteArrayContent = new ByteArrayContent(imageBytes);  
                     imageRequest.Add(byteArrayContent, "Files", fileName);  
                       if (_appService.IsApiAvailable().Result)  
                       {  
                           string url = FileUploadEndpoint;  
                           isSuccess = await _requestProvider.PostAsync<MultipartFormDataContent, bool>(url, imageRequest, accessToken, null).ConfigureAwait(false);  
                       }  
                   }  
               }  
               catch (Exception ex)  
               {  
                   Support.Error.Show(ex);  
               }  
               return isSuccess;  
           }  

Here is the API side code

   public bool PostAsync([FromForm]FilesUploadRequest filesUploadRequest)  
           {  
               //some code  
           }  
     
     
    public class FilesUploadRequest  
       {  
           public List<IFormFile> Files { get; set; }  
       }  

Response from API is always coming false though it is working fine from swagger. Can anyone suggest me where I am doing wrong?