How to close form

Question

Ok  so a Windows Forms class  WindowSettings  and the form has a  Cancel -button  When the user clicks the button  the dialog DialogSettingsCancel will pop-up up and ask the user if he is sure he wants to perform the action  The dialog has 2 buttons  a  Yes -button and a  No -button  If the user clicks the  Yes -button  I want both DialogSettingsCancel and WindowSettings to be closed   My button Click event handler in DialogSettingsCancel   private void button1 Click object sender  EventArgs e          Code to trigger when the  Yes -button is pressed      WindowSettings settings   new WindowSettings        this Close        settings Close        When I run my application  and go to the settings form  and click the  Cancel -button  and then click the  Yes -button  only DialogSettingsCancel closes without closing WindowSettings   Why won t it work   I ve also tried changing  this Close    settings Close      to  settings Close    this Close      But still the same result

User · Answer

new WindowSettings      You just closed a brand new instance of the form that wasn t visible in the first place   You need to close the original instance of the form by accepting it as a constructor parameter and storing it in a field

User · Answer

You can also close the application   Application Exit      It will end the processes

User · Answer

There are different methods to open or close winform  Form Close   is one method in closing a winform   When  Form Close    execute   all resources created in that form are destroyed  Resources means control and all its child controls  labels   buttons    forms etc   Some other methods to close winform    Form Hide   Application Exit     Some methods to Open Start a form    Form Show   Form ShowDialog   Form TopMost     All of them act differently   Explore them

User · Answer

Your closing your instance of the settings window right after you create it  You need to display the settings window first then wait for a dialog result  If it comes back as canceled then close the window  For Example   private void button1 Click object sender  EventArgs e        Settings newSettingsWindow   new Settings         if  newSettingsWindow ShowDialog      DialogResult Cancel                newSettingsWindow Close

User · Answer

Why not use the DialogResult method to close the form   if DialogSettingsCancel ShowDialog      DialogResult Yes           this will close the form but will keep application open if your         application type is  console  in the properties of the project      this Close        For this to work however you will need to do it inside your  WindowSettings  form while you call the DialogSettingsCancel form   Much the same way you would call the OpenFileDialog  or any other Dialog form

User · Answer

send the WindowSettings as the parameter of the constructor of the DialogSettingsCancel and then on the button1 Click when yes is pressed call the close method of both of them   public class DialogSettingsCancel       WindowSettings parent       public DialogSettingsCancel WindowSettings settings                this parent   settings                     private void button1 Click object sender  EventArgs e                  Code to trigger when the  Yes -button is pressed          this parent Close            this Close

User · Answer

for example  if you want to close a windows form when an action is performed there are two methods to do it  1 To close it directly   Form1 f new Form1    f close      u can use below comment also   this close      2 We can also hide form without closing it   private void button1 Click object sender  EventArgs e                Form1 f1   new Form1            Form2 f2   new Form2            int flag   0          string u  p          u   textBox1 Text          p   textBox2 Text          if u   username   amp  amp  p   pasword                         flag   1                    else                     MessageBox Show  enter correct details                      if flag  1                        f2 Show                this Hide

User · Answer

You need the actual instance of the WindowSettings that s open  not a new one   Currently  you are creating a new instance of WindowSettings and calling Close on that  That doesn t do anything because that new instance never has been shown   Instead  when showing DialogSettingsCancel set the current instance of WindowSettings as the parent   Something like this   In WindowSettings   private void showDialogSettings Click object sender  EventArgs e        var dialogSettingsCancel   new DialogSettingsCancel        dialogSettingsCancel OwningWindowSettings   this      dialogSettingsCancel Show        In DialogSettingsCancel   public WindowSettings OwningWindowSettings   get  set     private void button1 Click object sender  EventArgs e        this Close        if OwningWindowSettings    null          OwningWindowSettings Close        This approach takes into account  that a DialogSettingsCancel could potentially be opened without a WindowsSettings as parent   If the two are always connected  you should instead use a constructor parameter   In WindowSettings   private void showDialogSettings Click object sender  EventArgs e        var dialogSettingsCancel   new DialogSettingsCancel this       dialogSettingsCancel Show        In DialogSettingsCancel   WindowSettings  owningWindowSettings   public DialogSettingsCancel WindowSettings owningWindowSettings        if owningWindowSettings    null          throw new ArgumentNullException  owningWindowSettings          owningWindowSettings   owningWindowSettings     private void button1 Click object sender  EventArgs e        this Close         owningWindowSettings Close

[c#] How to close form

Examples related to c#

Examples related to winforms

Examples related to button

Examples related to formclosing