Could not close form

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Hellow, i have proj1
i add 2 forms to Form1.cs(Designe) they are FormA and FormB
in FormA i add 2 buttons,they are

CallFormB_button and ExitFromFormA_Button

i added click to CallFormB_button so i can call FormB
it is CallFormB_buttonClick

in FormA, i added those codes

C#

protected override void OnClosing(CancelEventArgs e)
{
    this.Close();//<------
    //Base.Close();
}
private void ExitFromFormA_ButonClick(object sender, EventArgs e)
{
    this.Close();//,<-----
    //Base.Close();
}

in FormB i add 1 button it is

ExitFromFormB_Button

in FormB, i added those codes

C#

protected override void OnClosing(CancelEventArgs e)
        {
			this.Close();
			//Base.Close();
        }
        private void ExitFromFormB_ButonClick(object sender, EventArgs e)
        {
			this.Close();
			//base.Close();
        }

//---
i could find my way back from FormB and reach FormA
but i could not exit from FormA ! i want to reach Form1
the program hange and need Task manger to stop it
i tried base.Close() but no diffrence

Posted 11-Jul-14 1:50am

Engineer khalid

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CHill60 11-Jul-14 8:02am

Why do you have "this.Close()" in the OnClosing event ... it's already closing.

Engineer khalid 11-Jul-14 8:53am

few minutes ago i realize the above program works fine but acually my program looks like this

protected override void OnClosing(CancelEventArgs e)
{
DialogResult result;
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
result = MessageBox.Show(this, "Are You Sure Want to exit", " Answer Yes or No",
buttons, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1,
MessageBoxOptions.RightAlign);
if (result == DialogResult.Yes)
{
//base.Close();
this.Close();
}//Yes
else e.Cancel = true;
}
//------------------
private void ExitFromFormA_ButonClick(object sender, EventArgs e)
{
DialogResult result;
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
result = MessageBox.Show(this, "Are You Sure Want to exit", " Answer Yes or No",
buttons, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1,
MessageBoxOptions.RightAlign);
if (result == DialogResult.Yes)
{
//base.Close();
this.Close();
//Application.Exit();
}//Yes
;
}

protected override void OnClosing(CancelEventArgs e)
{
DialogResult result;
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
result = MessageBox.Show(this, "Are You Sure Want to exit", " Answer Yes or No",
buttons, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1,
MessageBoxOptions.RightAlign);
if (result == DialogResult.Yes)
{
//base.Close();
this.Close();
}//Yes
else e.Cancel = true;
}

private void ExitFromFormB_ButonClick(object sender, EventArgs e)
{
DialogResult result;
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
result = MessageBox.Show(this, "Are You Sure Want to exit", " Answer Yes or No",
buttons, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1,
MessageBoxOptions.RightAlign);
if (result == DialogResult.Yes)
{
//base.Close();
this.Close();
//Application.Exit();
}//Yes
;
}

Engineer khalid 11-Jul-14 9:05am

your answer is correct you deserve the 5 points but i could not find any button to send this 5 points

CHill60 11-Jul-14 9:13am

I've put that as a solution to wrap things up :)

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CHill60 · Accepted Answer · 2014-07-11T03:13:00

Solution 1

Problem was

C#

protected override void OnClosing(CancelEventArgs e)
        {
            this.Close();
            //Base.Close();
        }

Don't call the Close event when the form is already closing

Posted 11-Jul-14 3:13am

CHill60