Question

Everyone I am using C#.NET for the task. Let me explain briefly what i need actually. I have a WEB application in ASP.NET C# and the value/data inserted by the user in the ‘TextBox‘(Employee_name:) needs to be passed to desktop application on the same corresponding ‘TextBox‘ say “Employee_name:” So how do i make it. Thanks.

Answer 1

Web applications can not initiate a communication. So you can’t do this the way you’d (probably like).

You can have your desktop application call a method in you ASP.NET application and get back the value and then put it in that required textbox.

However, that would mean a two step process Since you’d have to know when to ask the GUI application to go get the data from the ASP.NET application and depending on your situation, you’ll probably have to pass additional information to the ASP.NET application so it can provide the value from the correct “record” as well.

EDIT
Simple way to achieve this, using just regular Http request (no web services or WCF)

The Mark up in an .aspx file should have no html. Just the page directive like so:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="default.aspx.cs" Inherits="HttpTaskServer.WebForm1" %>

In your code behind file (.cs file of the page) you could do something like this:

  public partial class WebForm1 : System.Web.UI.Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {

      if (Request.HttpMethod == "GET")
      {
        //Some parameter passed in by the client via QueryString (url)
        var id = Request.QueryString["id"];
        string data = GetTheData(id);
        Response.Write(data);
      }
    }
  }

For an example of how to make an http call from a GUI/Console application. Take a look at Code Listing 9 (the last code listing in the blog post). the link below will take you straight to code listing 9
http://www.matlus.com/httpwebrequest-asynchronous-programming/#codelisting9