in Program.cs
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new frmMain());
}
in Main form
private void frmMain_Load(object sender, EventArgs e)
{
frmLogin frml=new frmLogin();
frml.ShowDialog();
}
in login form:
private void btnLogin_Click(object sender, EventArgs e)
{
if(txtUserName.Text=="admin" && txtPassword.Text=="pass")
{
MessageBox.Show("Login Successful");
this.Close();
}
else
{
MessageBox.Show("Login Failed");
Application.Exit();
}
}