void 
Button1Click(
object 
sender, EventArgs e)
    
{
        
RegistryKey rk = Registry.LocalMachine;
        
RegistryKey rks = rk.CreateSubKey(
"SOFTWARE\\Wow6432Node\\Microsoft\\Internet Explorer\\MAIN\\FeatureControl\\FEATURE_BROWSER_EMULATION"
);
        
rks.SetValue(textBox1.Text,
"11001"
,RegistryValueKind.DWord);
        
rk.Close();
    
}