C# Form kodu hata veriyor

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 windowsformsapplication2
{
 Public partial class form1: Form.
 {
 Public Form1()
 {
 InitializeComponent();
 }

 Private Void label1_click(object sender, eventargs e)
 {

 }

 Private Void label2_click(object sender, eventargs e)
 {

 }

 Private Void label3_click(object sender, eventargs e)
 {

 }

 Private Void label4_click(object sender, eventargs e)
 {

 }

 Private Void label5_click(object sender, eventargs e)
 {

 }

 Private Void label6_click(object sender, eventargs e)
 {

 }
 Private Void button1_click(object sender, eventargs e)
 {
 Label2.text = "oğuzhan";
 }

 Private Void button2_click(object sender, eventargs e)
 {
 Label2.text = "gizlendi";
 }

 Private Void button3_click(object sender, eventargs e)
 {
 Label4.text = "bayram";
 }

 Private Void button4_click(object sender, eventargs e)
 {
 Label4.text = "gizlendi";
 }

 Private Void button5_click(object sender, eventargs e)
 {
 Label4.text = "gizlendi";
 }

 Private Void button6_click(object sender, eventargs e)
 {
 Label6.text = "İstanbul";
 }
 Private Void button7_click(object sender, eventargs e)
 {
 Label6.text = "gizlendi";
 }

 }
}