i can't close the form when textbox validation is there , what can i do now ??

currently i am working on C#.net windows application ...
in my application i can't close the form when textbox validation is there , what can i do now ??

please refer the below code ...

private void Admin_Load(object sender, EventArgs e)
        {
            //Get Form Properties
            Form objform = this.FindForm();
            objGeneral.GetFormProperties(objform);

            pctBoxLogin2.Visible = false;
            lblmsg.Visible = false;
        }

        private void btnFlashObject_Click(object sender, EventArgs e)
        {
            //add constructor logic here ...
            
        }

        private void txtPasskey_TextChanged(object sender, EventArgs e)
        {
            //add constructor logic here ...
            Form objform = this.FindForm();
            pctBoxLogin2.Visible = false;
            objform.CausesValidation = true;
        }

        private void txtPasskey_Validating(object sender, CancelEventArgs e)
        {
            //add constructor logic here ...
            Form objform = this.FindForm();
            
            if (!ValidText(txtPasskey.Text))
            {
                // Cancel the event and select the text to be corrected by the user.
                objform.CausesValidation = false;
                e.Cancel = true;
                txtPasskey.Select(0, txtPasskey.Text.Length);
                pctBoxLogin2.Visible = true;
            }
        }

        public bool ValidText(string stringvalue)
        {
            if (stringvalue == "pILy^caffs")
            {
                return true;
            }
            return false;
        }

        private void btnEnter_Click(object sender, EventArgs e)
        {
            //add some logic here
            if (txtPasskey.Text == "pILy^caffs")
            {
                Results objResults = new Results();
                objResults.Show();
            }
            else
            {
                lblmsg.Visible = true;
                lblmsg.Text = "Please Enter Valid Pass Key";
            }
        }

anything wrong on the above code ,
how can i close form when textbox validation is there ??