Write data from Unity 3D to SQL Server using ASP.NET

Hi everyone. In this exercise we are going to pass data from UNITY 3D to an ASP.NET site. Eventually the site can connect and store data in SQL Server.

Unity 3D – Setup

1. Create a new GameObject, name it Scripts and assign with it a C# Script (LogData.cs)

2. For testing purposes we are going to create a new button in the OnGUI() method which will pass parameters  to ASP.NET site upon click. Here is the whole implementation of the LogData class.

public class LogData : MonoBehaviour {

 //The URL to the server - In our case localhost with port number 2475
 private string url = "http://localhost:2475/";

 // Use this for initialization
 void Start () {

 }

 // Update is called once per frame
 void Update () {

 }

 void OnGUI()
 {
   // Make a background box
   GUI.Box(new Rect(10,10,100,90), "Loader Menu");

   // Make the first button.
   if(GUI.Button(new Rect(20,40,80,20), "Connect")) {

     //when the button is clicked

     //setup url to the ASP.NET webpage that is going to be called
     string customUrl = url+ "LogUserScore.aspx";

     //setup a form
     WWWForm form = new WWWForm();

     //Setup the paramaters
     form.AddField("UserID", "47");
     form.AddField("Score", "100");

     //Call the server
     WWW www = new WWW(customUrl, form);
     StartCoroutine(WaitForRequest(www));
   }

 }

 IEnumerator WaitForRequest(WWW www)
 {
    yield return www;

    // check for errors
    if (www.error == null)
    {
     //write data returned from ASP.NET
     Debug.Log(www.text);

    } else {
     Debug.Log("WWW Error: "+ www.error);
   }
 }

}

ASP.NET – Setup

1. Create a new ASP.NET web application and create a Web Form with name LogUserScore.aspx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace UnityConnectASP.NET
{
 public partial class LogUserScore : System.Web.UI.Page
 {
 protected void Page_Load(object sender, EventArgs e)
 {
   if (Page.Request.HttpMethod == "POST")
    {
      //read paramaters
      string UserID = (Request.Form["UserID"]);
      string Score = (Request.Form["Score"]);

     //store data into MS SQL Database
     //---Insert into database etc etc---

     //load total score from database
     //Using a dummy value 200
     string totalScore = "200";

     //Return data to Unity, such as total score
     Response.Clear();
     Response.ContentType = "application/text; charset=utf-8";
     Response.Write("Total Score: " + totalScore);
     Response.End();
    }
  }
 }
}

2. Optional: To allow your game to be played from any domain, in the root folder of the site (where the web.config is located), create a crossdomain.xml file and write:

<?xml version="1.0"?>
<cross-domain-policy>
<allow-access-from domain="*"/>
</cross-domain-policy>

Testing the Code

1. Connect Button is clicked

2. Data Passed to ASP.NET

3. Data returned to UNITY