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";
            }
        }

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

C#.NET ProgrammingASP.NET

Last Comment

Parth48

8/22/2022 - Mon

crysallus

3/7/2011

My guess would be that you need to set e.Cancel = false to ensure that the close isn't canceled. I think I recall reading somewhere that e.Cancel = true is actually the default. You have to specifically tell it that the close shouldn't be canceled. eg.

            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;
            }
            else
                e.Cancel = false;

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Try that anyway, see if it works.

Mike Tomlinson

3/7/2011

First off, this code is pointless:

Form objform = this.FindForm();

You're asking for the Form that contains "this"...which already is the Form!
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.findform(VS.80).aspx

"Retrieves the form that the control is on."

So everywhere you obtain the form using that construct you could simply use "this" directly.

Try this out to allow the form to be closed:

public partial class Admin_Load : Form
    {

        private bool UserClosing = false;

        public Admin_Load()
        {
            InitializeComponent();
        }

        protected override void WndProc(ref Message m)
        {
            const int WM_SYSCOMMAND = 0x0112;
            const int SC_CLOSE = 0xF060;

            if (m.Msg == WM_SYSCOMMAND && (int)m.WParam == SC_CLOSE)
            {
                UserClosing = true;
            }

            base.WndProc(ref m);
        }

        private void txtPasskey_Validating(object sender, CancelEventArgs e)
        {
            if (!UserClosing && !ValidText(txtPasskey.Text))
            {
                e.Cancel = true;
                txtPasskey.SelectAll(); 
                pctBoxLogin2.Visible = true;
            }
        }

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

    }

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lalitgada

3/8/2011

how could it be possible if set

objform.CausesValidation = true;

check this code.

Your help has saved me hundreds of hours of internet surfing.

fblack61

Parth48

3/8/2011

ASKER

hi @Idle_Mind: u r right , but coding is some complex , can u tell me the easy way ??

the below code i can't understand ....

protected override void WndProc(ref Message m)
        {
            const int WM_SYSCOMMAND = 0x0112;
            const int SC_CLOSE = 0xF060;

            if (m.Msg == WM_SYSCOMMAND && (int)m.WParam == SC_CLOSE)
            {
                UserClosing = true;
            }

            base.WndProc(ref m);
        }