How to retreive value from a list and display it in a GridView in SharePoint Through Visual Studio

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.

WebParts;
using System.Data;
using System.Collections;
using System.Collections.Generic;
using Microsoft.SharePoint;

namespace Sun_SharePointProject2.sunVisualWebPart1
{
    class Data
    {
        public string studentId { get; set;}
        public string name {get; set;}
        public string address {get; set;}
        public string section { get; set; }
    }
    public partial class sunVisualWebPart1UserControl : UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                SPList info = SPContext.Current.Web.Lists["Student List"];
                List<Data> data = new List<Data>();
                foreach (SPListItem item in info.Items)
                {
                    Data d = new Data();
                    d.studentId = item["Student ID"].ToString();
                    d.name = item["Name"].ToString();
                    d.address = item["Address"].ToString();
                    d.section=item["Section"].ToString();
                    data.Add(d);
                }
                GridView1.DataSource = data;
                GridView1.DataBind();
            }
            catch (Exception ex)
            {
                Label1.Text = ex.Message + "-" + ex.StackTrace;
            }
        }
    }
}