Console application in .net core.

@Abhishek I have used this code for printing

 try
            {
                //using (TcpClient client = new TcpClient())
                //{
                //    await client.ConnectAsync(printerIPAddress, printerPort);
                //    using (NetworkStream stream = client.GetStream())
                //    {
                //        await stream.WriteAsync(pdfBytes, 0, pdfBytes.Length);
                //        await stream.FlushAsync();
                //    }
                //}
                using (TcpClient client = new TcpClient())
                {
                    await client.ConnectAsync(printerIPAddress, printerPort);
                    using (NetworkStream stream = client.GetStream())
                    using (StreamWriter writer = new StreamWriter(stream))
                    {
                        string plainText = Regex.Replace(htmlContent, "<[^>]*>", "");
                        //await writer.WriteAsync(plainText);
                        await writer.FlushAsync();
                    }
                }
            }

• Instead of sending raw text or HTML content directly to the printer, consider using the .NET PrintDocument class to create a document object and specify formatting options.
• You can create a PrintDocument object, handle the PrintPage event to specify the content to be printed, and then send the document to the printer.

Here's a basic example of how you can use PrintDocument to print formatted content

using System;
using System.Drawing;
using System.Drawing.Printing;

class Program
{
    static void Main(string[] args)
    {
        PrintDocument pd = new PrintDocument();
        pd.PrintPage += new PrintPageEventHandler(PrintPage);
        pd.Print();
    }

    private static void PrintPage(object sender, PrintPageEventArgs e)
    {
        // Example: Print "Hello, World!" with red color and large font
        Font font = new Font("Arial", 16);
        Brush brush = new SolidBrush(Color.Red);
        e.Graphics.DrawString("Hello, World!", font, brush, 100, 100);
    }
}

Replace the content in the PrintPage event handler with your HTML rendering logic or plain text formatting as needed. This will allow you to control how the content is printed by the printer.