C#

static List<AccountData> ParseAccountData(string filePath, string delimiter = "ACC_ID:")
{
	int g = 0;
	return File.ReadAllLines(filePath)
		.Select(x => new 
		{ 
			group = x == delimiter ? ++g : g,
			line = x 
		})
		.Where(x => x.line != delimiter)
		.GroupBy(x => x.group)
		.Select(x => new AccountData 
		{ 
			Acc_ID = x.First().line,
			Data = x.Skip(1).Select(z => z.line).ToList()
		})
		.ToList()
}

class AccountData
{
	public string Acc_ID { get; set; }
	
	public List<string> Data { get; set; }
}

<Students Variable="Age"
<Semester>2</Semester>
</Students>
<Students Variable="Age"
<Semester>3</Semester>
</Students>

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

   //clean up
    GC.Collect();
    GC.WaitForPendingFinalizers();
    Marshal.ReleaseComObject(xlSheet);
    Marshal.ReleaseComObject(xlBook);<br />
    Marshal.ReleaseComObject(xlApp);

//xlSheet, xlBook, xlApp are representing accordingly: Sheet, Workbook and MS Excel application instance

public static async Task UploadFile(HttpClient client, string url, string filePath, string contentType, CancellationToken cancellationToken)
{
    // Argument validation omitted...
    
    using (var fileStream = File.OpenRead(filePath))
    {
        var file = new StreamContent(fileStream);
        file.Headers.ContentType = MediaTypeHeaderValue.Parse(mimeType);
        file.Headers.ContentLength = fileStream.Length;
        
        var content = new MultipartFormDataContent();
        content.Add(file, "file", Path.GetFileName(filePath));
        
        using (var response = await client.PostAsync(url, content, cancellationToken).ConfigureAwait(false))
        {
            response.EnsureSuccessStatusCode();
        }
    }
}

using (var formData = new MultipartFormDataContent())
{
                Task<HttpResponseMessage> responseMessage = null; 
                using (var stream = File.OpenRead(pdf))
                {
                    HttpContent fileStreamContent = new StreamContent(stream);
                    fileStreamContent.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("form-data") 
                          { Name = "DigitalPCN", FileName = Path.GetFileName(fine.FileName) };
                    fileStreamContent.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/pdf");
                    formData.Add(fileStreamContent);

                    responseMessage = base.PostAsync(new Uri(@"https://localhost:44349/api/Controller/Method"), formData, token);
                    responseMessage.Wait();
                }

                return responseMessage.Result;
}

SshClient SSHObj = null;
private void BTNConnect_Click(object sender, EventArgs e)
{
  string Address = TXTHost.Text;
  string Port = TXTPort.Text;
  string UserName = TXTUserName.Text;
  string Password = TXTPassword.Text;
  int NumPort = Int32.Parse(Port);
  SSHObj = new SshClient(Address, NumPort, UserName, Password);
  SSHObj.Connect();
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.