How do I cnect to a database and query my SP to view into a table after On_Click in C#? [closed]

I am trying to populate a data-grid/ and or table by clicking a button from my webpage. At the moment I only learned how to bind information. Can someone please direct me in the right direction. I have made my sql connection so far and added the button to the page. I've searched online trying to get examples of this and came up short.

My Query generates the following columns: (Stored Procedure)

LoginID---JobTitle--- Name--- GroupName ---Gender ---Hiredate

And I would like for the columns to match what's on my default.aspx page ASPX.CS Behind code

    protected void Getmployee_Click(object sender, EventArgs e)
    {
        Getmployee_Click = Getmployee;
        GridView1.DataSource = Getmployee;
        GridView1.DataBound();

    }

Here is my Class: //Its not perfect

using System;
using System.Collections.Generic;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.Security;

namespace Test1
{
public class GetEmployee
{
    private string LoginID;
    private string JobTitle;
    private string Name;
    private string GroupName;
    private string gender;
    private DateTime HireDate;


}
public GetEmployee()
{

}

  public GetEmployee( string LoginID,string JobTitle,
     string Name,string GroupName,string gender,DateTime HireDate)
{
this.LoginID = LoginID;
this.JobTitle = JobTitle;
this.Name = Name;
this.GroupName = GroupName;
this.gender = gender;
this.HireDate = HireDate;
}

public string LoginID {get{return this.LoginID}}
public string JobTitle {get{return this.JobTitle}}
public string Name {get{return this.Name}}
public string GroupName {get{return this.GroupName}}
public string gender {get{return this.gender}}
public DateTime  HireDate {get{return this.HireDate}}
}

Here's my connection class

using System;
using System.Collections.Generic;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web.Security;

namespace Test1
{
internal sealed  class ConnectionManager
{
    public static SqlConnection GetConnection() 
    {
        string connectionString = ConfigurationManager.ConnectionStrings ["AdventureWorks2008R2"].ConnectionString;

        SqlConnection connection = new SqlConnection(connectionString);

        connection.Open();
        return connection;
    }
  }
}