Member Avatar for pinkygirl

Hey, I'm currently working on a social network website in ASP.NET, C#. I want to know the steps to create a chat application.

Kindly guide me,

Thanks.

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As suggested remoting, note that .NET Remoting is a legacy .NET-to-.NET technique and is not a good fit for browser-based chat. For an ASP.NET/C# site a much simpler and more robust approach is SignalR (it uses WebSockets when available and falls back to other techniques automatically) or, if you prefer lower-level control, plain WebSockets for browsers.

Practical starting steps

  • Pick the stack: for new work use ASP.NET Core SignalR; for older Framework projects use Microsoft.AspNet.SignalR.
  • Create a small proof-of-concept: add the SignalR package, register a Hub, and map the Hub endpoint.
  • Implement a minimal Hub (server) and a small JS client that connects, listens for events, and invokes send methods.
  • Wire authentication so messages carry the authenticated user id (cookie or JWT). Map connection IDs to users for private messaging.
  • Decide persistence: store messages if you need history; otherwise keep ephemeral messages in memory.
  • Plan scaling: single-server POC first; then add a backplane (Redis) or use Azure SignalR Service for multi-server deployments.

Minimal example (concept only)

public class ChatHub : Hub
{
    public Task SendMessage(string user, string message)
    {
        return Clients.All.SendAsync("ReceiveMessage", user, message);
    }
}
const conn = new signalR.HubConnectionBuilder().withUrl("/chatHub").build();
conn.on("ReceiveMessage", (user, msg) => { /* update UI */ });
await conn.start();
await conn.invoke("SendMessage", user, message);

Quick cautions and troubleshooting

  • Configure CORS and authentication; mismatched schemes block connections.
  • For multi-server setups use a backplane or managed service to avoid lost messages or the need for sticky sessions.
  • Sanitize/encode message text to prevent XSS, and add rate-limiting to prevent abuse.

Official docs: ASP.NET Core SignalR introduction and the browser WebSocket reference at MDN WebSocket API.

Recommended Answers

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Member Avatar for Topi Ojala

I suggest Client and Server classes with remoting.

Edited by Topi Ojala because: n/a
Member Avatar for pinkygirl

How do I start it?

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