Taking values from webmethod and displaying on a webform textbox

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Hi,

I am an embedded software developer (for microcontrollers) with limited web development experience.

I am writing a simple webservice with a webform to take data received by a webmethod and display it on a web form (as part of a tech demo).

See below - I highly doubt the proposed solution is valid, but it is the easiest way of showing what I am trying to do.

C#

[WebMethod]
public string UploadData(string Password, string Serial, string ConnectionReason, string ResetReason)
{
     txtPassword.Text = Password;
     txtSerial.Text = Serial;

     return txtResponse.text
}

Similarly, I would like the HTTP response to the webmethod to return the value of some textboxes back to the Client.

What is the most straightforward way of implementing this?

Posted 11-Nov-14 6:51am

vonny232

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Comments

Sergey Alexandrovich Kryukov 11-Nov-14 14:49pm

First thing which catches my eye is the worst thing, trying to use strings for all data. Why not using numeric data, enumeration, and so on? Apparently, you should have smalls set of values: very few connection reasons, very few reset reasons. Also, is it between .NET and .NET, or should your service be provided for wider range of technologies?
Also, do you really use embedded service expose to all the Internet? If you want to work only on LAN (I would presume), you could use way more flexible, powerful and simple, general-case WCF, not necessarily hosted on a Web service...
—SA

vonny232 12-Nov-14 4:26am

Hi, Yes the Reset and Connection reasons should be numeric, but I have only just implemented the webmethod so the code is incomplete.

I will be interfacing between a PIC running the Microchip TCP/IP stack and the server (which is only supposed to be a tech demo as I am not a web developer). We only produce the hardware, so our customer will end up writing the web service and server code.

I will be using HTTP Post to send the data.

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SRS(The Coder) · Answer 1 · 2014-11-11T22:11:00

Simply you can accomplish this using jQuery Ajax very easily :-

Let say below is the web method i am having as asmx

C#

[WebMethod(EnableSession = true)]
        public string GetData(int id, string name)
        {
            string jsonData = string.Empty;
	    // var data = get data from database here;
            jsonData = Parser.EntityToJSon(data);
            return jsonData;
        }

Here below one is the jQuery ajax code for the ajax call to this web method for fetching data :-

JavaScript

$(function(){
	$.ajax({
        type: "POST",
        url: "../WebMethods/WebService.asmx/GetData",
        data: "{Id:" + {pass ID here} + ",Name:'" + {pass name value here} + "'}",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (response) {
            var result = $.parseJSON(response.d);
		// here 'result' is the JSON formatted data you wanted to fetch
        },
        error: function (XMLHttpRequest, textStatus, errorThrown) {
            // error happened, handle here
        }
    });
});

Hope this will definitely help you to proceed further.
Please let me know if anything else stops you to accomplish this.