Ошибка в C# Windows forms

[mishav]

Требуется написать простенький валютный калькулятор. Застопорился на моменте получения значения из TextBox. Пишет Ошибка 1 Элемент "Kurs" не существует в текущем контексте. c:\users\misha_000\documents\visual studio 2013\projects\consoleapplication1\c onsoleapplication1\program.cs 102 40 ConsoleApplication1
Может кто подсказать в чем ошибка?
Листинг ниже:

using System;
using System.Drawing;
using System.Windows.Forms;

namespace ConsoleApplication1
{
public partial class VCal: Form
{
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new VCal());

}

public VCal()
{
Text = "Валютный калькулятор";
Width *= 3;
Height *= 2;

TextBox USD = new TextBox();
USD.Parent = this;
USD.Size = new Size(60, 20);
USD.Location = new Point(10, 50);

Label USDLab = new Label();
USDLab.Parent = this;
USDLab.Size = new Size(40, 30);
USDLab.Text = "USD";
USDLab.Font = new Font("TimesNewRoman", 10);
USDLab.Location = new Point(10, 20);

Button USDbut = new Button();
USDbut.Parent = this;
USDbut.Text = "Click";
USDbut.Font = new Font("TimesNewRoman", 6);
USDbut.Size = new Size(30, 20);
USDbut.Location = new Point(75, 50);


TextBox UAH = new TextBox();
UAH.Parent = this;
UAH.Size = new Size(60, 20);
UAH.Location = new Point(10, 100);

Label UAHLab = new Label();
UAHLab.Parent = this;
UAHLab.Size = new Size(40, 30);
UAHLab.Text = "UAH";
UAHLab.Font = new Font("TimesNewRoman", 10);
UAHLab.Location = new Point(10, 80);

Button UAHbut = new Button();
UAHbut.Parent = this;
UAHbut.Text = "Click";
UAHbut.Font = new Font("TimesNewRoman", 6);
UAHbut.Size = new Size(30, 20);
UAHbut.Location = new Point(75, 100);


TextBox Kurs = new TextBox();
Kurs.Parent = this;
Kurs.Size = new Size(60, 20);
Kurs.Location = new Point(10, 150);

Label KursLab = new Label();
KursLab.Parent = this;
KursLab.Size = new Size(40, 30);
KursLab.Text = "Kurs";
KursLab.Font = new Font("TimesNewRoman", 10);
KursLab.Location = new Point(10, 130);

Button Kursbut = new Button();
Kursbut.Parent = this;
Kursbut.Text = "Click";
Kursbut.Font = new Font("TimesNewRoman", 6);
Kursbut.Size = new Size(30, 20);
Kursbut.Location = new Point(75, 150);
}

private void InitializeComponent()
{
this.SuspendLayout();
//
// VCal
//
this.ClientSize = new System.Drawing.Size(284, 261);
this.Name = "VCal";
this.Load += new System.EventHandler(this.VCal_Load) ;
this.ResumeLayout(false);

}

private void VCal_Load(object sender, EventArgs e)
{

}
private void Kursbut_Clicl(object sender, EventArgs e)
{
int kurs = Convert.ToInt32(Kurs.Text);
}
}
}

[mishav]

Протупил, не передал ссылку на объект, так работает, может кому поможет:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ConsoleApplication1
{
public partial class VCal: Form
{
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new VCal());

}

public TextBox Q = new TextBox();
public VCal()
{
Text = "Валютный калькулятор";
Width *= 3;
Height *= 2;

TextBox USD = new TextBox();
USD.Parent = this;
USD.Size = new Size(60, 20);
USD.Location = new Point(10, 50);

Label USDLab = new Label();
USDLab.Parent = this;
USDLab.Size = new Size(40, 30);
USDLab.Text = "USD";
USDLab.Font = new Font("TimesNewRoman", 10);
USDLab.Location = new Point(10, 20);

Button USDbut = new Button();
USDbut.Parent = this;
USDbut.Text = "Click";
USDbut.Font = new Font("TimesNewRoman", 6);
USDbut.Size = new Size(30, 20);
USDbut.Location = new Point(75, 50);


TextBox UAH = new TextBox();
UAH.Parent = this;
UAH.Size = new Size(60, 20);
UAH.Location = new Point(10, 100);

Label UAHLab = new Label();
UAHLab.Parent = this;
UAHLab.Size = new Size(40, 30);
UAHLab.Text = "UAH";
UAHLab.Font = new Font("TimesNewRoman", 10);
UAHLab.Location = new Point(10, 80);

Button UAHbut = new Button();
UAHbut.Parent = this;
UAHbut.Text = "Click";
UAHbut.Font = new Font("TimesNewRoman", 6);
UAHbut.Size = new Size(30, 20);
UAHbut.Location = new Point(75, 100);


TextBox Kurs = new TextBox();
Kurs.Parent = this;
Kurs.Size = new Size(60, 20);
Kurs.Location = new Point(10, 150);
Q = Kurs;

Label KursLab = new Label();
KursLab.Parent = this;
KursLab.Size = new Size(40, 30);
KursLab.Text = "Kurs";
KursLab.Font = new Font("TimesNewRoman", 10);
KursLab.Location = new Point(10, 130);

Button Kursbut = new Button();
Kursbut.Parent = this;
Kursbut.Text = "Click";
Kursbut.Font = new Font("TimesNewRoman", 6);
Kursbut.Size = new Size(30, 20);
Kursbut.Location = new Point(75, 150);
}

private void InitializeComponent()
{
this.SuspendLayout();
//
// VCal
//
this.ClientSize = new System.Drawing.Size(284, 261);
this.Name = "VCal";
this.Load += new System.EventHandler(this.VCal_Load) ;
this.ResumeLayout(false);

}

private void VCal_Load(object sender, EventArgs e)
{

}
private void Kursbut_Clicl(object sender, EventArgs e)
{
int kurs = Convert.ToInt32(Q.Text);
}
}
}