private void Detaild_add_form_FormClosing(object sender, FormClosingEventArgs e)
        {
            DialogResult result = MessageBox.Show("Are you want to Exit..", "ABCD BANK", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);

            if (result == DialogResult.Yes)
            {
                this.Dispose();
                Detail_View_form dvf = new Detail_View_form();
                dvf.Show();
            }
            else if (result == DialogResult.No)
            {
                e.Cancel = true;
            }
            else if (result == DialogResult.Cancel)
            {
                e.Cancel = true;
            }
        }
 public void login()
 {
     try
     {
         if ((username_txt.Text == "") | (username_txt.Text == "Enter Username"))
         {
             username_txt.Text      = "Enter Username";
             username_txt.ForeColor = Color.Gray;
             MessageBox.Show("Please Enter Username...", "ABCD BANK", MessageBoxButtons.OK, MessageBoxIcon.Warning);
         }
         else if (username_txt.Text != "admin")
         {
             MessageBox.Show("Username is Invalied...", "ABCD BANK", MessageBoxButtons.OK, MessageBoxIcon.Warning);
         }
         else if ((password_txt.Text == "") | (password_txt.Text == "Enter Password"))
         {
             password_txt.Text         = "Enter Password";
             password_txt.ForeColor    = Color.Gray;
             password_txt.PasswordChar = (char)0;
             MessageBox.Show("Please Enter Password...", "ABCD BANK", MessageBoxButtons.OK, MessageBoxIcon.Warning);
         }
         else if (password_txt.Text != "ssd")
         {
             MessageBox.Show("Password is Invalied...", "ABCD BANK", MessageBoxButtons.OK, MessageBoxIcon.Warning);
         }
         else
         {
             Detail_View_form df = new Detail_View_form();
             df.Show();
             this.Hide();
         }
     }
     catch (Exception ex)
     {
     }
 }