[rfresh]

I'm trying add a class to my app to change the current Win7 user password. I don't under the error I'm getting:

The name 'ChangePassword' does not exist in the current context

I found this User class on the internet and am trying to use it in my app. The ChangePassword() function is declared as a public so I don't know why I can't call it.

namespace HelloWorld
{
    public class User
    {
        [DllImport("Netapi32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern int NetUserChangePassword(
            string domainname,
            string username,
            string oldpassword,
            string newpassword
            );
        public static void ChangePassword(string username, string domain, string oldpassword, string newpassword)
        {
            int result = NetUserChangePassword(
                domain,
                username,
                oldpassword,
                newpassword
                );
            if (result != 0)
                throw new Win32Exception();
        }
    }

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e) // void means this function returns nothing
        {

        }

        private void cmd_Set_Password_Click(object sender, EventArgs e)
        {
            ChangePassword(txt_Username.Text, txt_Domain.Text, txt_Old_Password.Text, txt_New_Password.Text);
        }
    }
}

[KieranQuinn]

You need to create an instance of the class.

[Skydiver]

He doesn't need to create an instance to access a static method of a class. It's like the way you don't need to create an instance of Console to access Console.WriteLine().

[KieranQuinn]

Didn't notice the method was static. It's 6:10am, with no sleep

[MrShoes]

As the ChangePassword method is in the User class, to call it from the form class you need to use User.ChangePassword().