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C# Windows Form Application, button name with readline


C# Windows Form Application, button name with readline

By : HIGH LEVEL
Date : October 18 2020, 03:08 PM
should help you out Based on yr comments: 1. Use a TextBox(called txtUserInput) to get the user's input 2. Use OpenFileDialog to help user to choose a file
code :
private void button1_Click(object sender, EventArgs e)
{
    if (!String.IsNullOrEmpty(txtUserInput.Text))
    {
        button1.Text = txtUserInput.Text;
        var openFileDialog = new OpenFileDialog();
        if (openFileDialog.ShowDialog() == DialogResult.OK)
        {
            MessageBox.Show("You chose: " + openFileDialog.FileName);
        }
    }
}


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C# Windows Form Application Transparent button

C# Windows Form Application Transparent button


By : Kushagra Handa
Date : March 29 2020, 07:55 AM
seems to work fine Its simple try this.
Click the button that you want to make transparent. Select FlatStyle from Properties and set it to popup Now change the BackColor property to Transparent.
How to run another windows form on button click in windows form application

How to run another windows form on button click in windows form application


By : Sky Scholfield
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further With utilizing a simple bool flag that indicates user is licensed or not, you can then Run either Form1 or Form2, like this:
code :
Form form = isLicensed ? new Form2() : new Form1();
Application.Run(form);
Windows Form Application Radio Button

Windows Form Application Radio Button


By : user2332949
Date : March 29 2020, 07:55 AM
should help you out It could be a race condition since radioButton1_CheckedChanged will be called twice. That's if all three of your radio buttons are using the same event handler for the CheckChanged event. The event handler will be called once for the button that was clicked and once for the button that gets unchecked.
Try using 3 seperate if statements instead:
code :
if (rbBold.Checked == true)
{
    label1.Font = new Font(label1.Font, FontStyle.Bold);
}
if (rbItalic.Checked == true)
{
    label1.Font = new Font(label1.Font, FontStyle.Italic);
}
if (rbUnderline.Checked == true)
{
    label1.Font = new Font(label1.Font, FontStyle.Underline);
}   
this.rbUnderline.CheckedChanged += new System.EventHandler(this.radioButton3_CheckedChanged);
this.rbUnderline.CheckedChanged += new System.EventHandler(this.radioButton1_CheckedChanged);
In Allegro Common Lisp Form application on Windows is there global form and button variables?

In Allegro Common Lisp Form application on Windows is there global form and button variables?


By : VijayAbraham05
Date : March 29 2020, 07:55 AM
will be helpful for those in need It is a waste of time, but not much for most cases. I'll answer first and then provide some experience afterthought on this.
This may be enough for most cases:
code :
(defmacro with-components ((&rest names) dialog &body body)
  (assert (every #'symbolp names))
  (let ((dialog-sym (gensym (symbol-name '#:dialog))))
    `(let ((,dialog-sym ,dialog))
       (let (,@(mapcar #'(lambda (name)
                           `(,name
                             (find-component
                              ,(intern (symbol-name name) :keyword)
                              ,dialog-sym)))
                       names))
         ,@body))))

(defun do-something (my-dialog)
  (with-components (my-progress-bar) my-dialog
    ;; ...
    ))
(defclass my-dialog (dialog)
  ((my-progress-bar :reader my-dialog-my-progress-bar)))

(defmethod initialize-instance :after ((dialog my-dialog) &rest initargs)
  (declare (ignore initargs))
  (with-slots (my-progress-bar) dialog
    (setf my-progress-bar (find-component :my-progress-bar dialog))))

(defun my-dialog ()
  (find-or-make-application-window :my-dialog 'make-my-dialog))

(defun make-my-dialog (&key owner #| ...|#)
  (make-window :my-dialog
    :owner (or owner (screen *system*))
    :class 'my-dialog
    :dialog-items (make-my-dialog-widgets)
    ;; ...
    ))

(defun make-my-dialog-widgets ()
  (list
   (make-instance 'progress-indicator
     :name :my-progress-bar
     :range '(0 100)
     :value 0
     ;; ...
     )
   ;; ...
   ))
(defmacro defdialog (name (&rest supers) (&rest slots) &rest options)
  (let ((static-dialog-item-descs (find :static-dialog-items options
                                        :key #'first))
        (dialog-sym (gensym (symbol-name '#:dialog)))
        (initargs-sym (gensym (symbol-name '#:initargs)))
        (owner-sym (gensym (symbol-name '#:owner))))
    `(progn

       (defclass ,name (,@supers dialog)
         (,@slots
          ;; TODO: intern reader accessors
          ,@(mapcar #'(lambda (static-dialog-item-desc)
                        `(,(first static-dialog-item-desc)
                          :reader ,(intern (format nil "~a-~a"
                                                   name
                                                   (first static-dialog-item-desc)))))
                    (rest static-dialog-item-descs)))
         ,@(remove static-dialog-item-descs options))

       (defmethod initialize-instance :after ((,dialog-sym ,name) &rest ,initargs-sym)
         (declare (ignore ,initargs-sym))
         (with-slots (,@(mapcar #'first (rest static-dialog-item-descs))) ,dialog-sym
           ,@(mapcar #'(lambda (static-dialog-item-desc)
                         `(setf ,(first static-dialog-item-desc)
                                (find-component
                                 ,(intern (symbol-name (first static-dialog-item-desc))
                                          :keyword)
                                 ,dialog-sym)))
                     (rest static-dialog-item-descs))))

       ;; Optional
       (defun ,name ()
         (find-or-make-application-window ,(intern (symbol-name name) :keyword)
                                          'make-my-dialog))

       (defun ,(intern (format nil "~a-~a" '#:make name))
           (&key ((:owner ,owner-sym)) #| ... |#)
         (make-window ,(intern (symbol-name name) :keyword)
           :owner (or ,owner-sym (screen *system*))
           :class ',name
           :dialog-items (,(intern (format nil "~a-~a-~a" '#:make name '#:widgets)))
           ;; ...
           ))

       (defun ,(intern (format nil "~a-~a-~a" '#:make name '#:widgets)) ()
         (list
          ,@(mapcar #'(lambda (static-dialog-item-desc)
                        `(make-instance ,(second static-dialog-item-desc)
                           :name ,(intern (symbol-name (first static-dialog-item-desc))
                                          :keyword)
                           ,@(rest (rest static-dialog-item-desc))))
                    (rest static-dialog-item-descs)))))))

(defdialog my-dialog ()
  ()
  (:static-dialog-items
   (my-progress-bar #| Optional |# 'progress-indicator
     :range '(0 100)
     :value 0               
     ;; ...
     )))
how to check whether a button is clicked, inside another button click event in windows form application in C#

how to check whether a button is clicked, inside another button click event in windows form application in C#


By : user3884980
Date : March 29 2020, 07:55 AM
wish of those help Create cancellation token, start asynchronous Task in button start event handler put your method in this Task, pass reference to this cancellation token and use it to stop this task in Stop button event handler when you'll need it later.
More information : https://msdn.microsoft.com/en-us/library/jj155759.aspx
code :
    static CancellationTokenSource cts;
    static Task t;

    private void Method()
    {
        while (!cts.IsCancellationRequested) 
        {
             // your logic here
        }
        t = null;
    }

    private void stdaq_click (object sender, EventArgs e)
    {           
       if(t != null) return;
       cts = new CancellationTokenSource();
       t = new Task(Method, cts.Token, TaskCreationOptions.None);
       t.Start();
    }

    private void spdaq_Click(object sender, EventArgs e) 
    {
       if(t != null) cts.Cancel(); 
    }
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