How to know if the Form App open or not c#

» chash » How to know if the Form App open or not c#

By : NorthHighlander

Date : January 02 2021, 06:48 AM

this one helps. You can check if a form of a given type is open in your application like this (using LINQ):

code :

Share :

Can a Timer from a open form interupt code on other open form

By : intelceptor

Date : March 29 2020, 07:55 AM

it should still fix some issue No. The WinForm framework operates on a single thread. Therefore, if Form2 is currently executing a database command, the UI thread will be busy until that command is complete. No other UI activity will be processed until the thread is free to do so. You could use a System.Timers.Timer or System.Threading.Timer instead, since those operate on a separate thread, however, if the purpose of the timer is to modify the UI in some way, such as showing status or progress, then the changes to the UI will not occur until the UI thread is free, anyway. The best way to handle these kinds of situations it to, instead, do the time-intensive work on a separate thread so that the UI thread is free while the work is being done. The easiest way to do that in a form is by using the BackgroundWorker component. It's a component, so you can drag one onto your form from the form designer tool box.

Passing information from an open form to an open form on TextChanged event

By : Niru Tamang

Date : March 29 2020, 07:55 AM

wish helps you I'm not sure if got your question right. I assume you want to pass information from one child-form to another.
One way of doing that would be like this:

code :

public interface IDataContainer
{
     void SetData(String data);
}

public partial class parentForm : Form, IDataContainer

public partial class parentForm : Form, IDataContainer
[...]

public void SetData(String dataComingFromOtherSource)
{
     this.browserFormInstance.passInfo = dataComingFromOtherSource;
}
[...]

public partial class parentForm : Form
{
    private notesForm notesForm = null;

    public parentForm()
    {
        InitializeComponent();

        // Note that at this point you are instantiating
        // the child-form and you are passing a reference
        // to the `parentForm` so that you can pass information
        // to it, and from it to whatever other form you may
        // need, in an elegant way.
        this.notesForm = new notesForm(this);
    }

public partial class notesForm : DockContent
{
    // On runtime this will in fact the `parentForm` object instance.
    IDataContainer myDataContainerInstance = null;

    public notesForm(IDataContainer myDataContainerInstance) : base()
    {
        InitializeComponent();

        // Assign the reference so that you can use it later
        this.myDataContainerInstance = myDataContainerInstance;

        textBox1.TextChanged += new EventHandler(textBox1_TextChanged);
    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {
        this.myDataContainerInstance.SetData(textBox1.Text);
    }
}

Budget Analysis Form Rightside grid should defaultly open when i Open the form for single project. Dynamics ax

By : Fernando González

Date : March 29 2020, 07:55 AM

hope this fix your issue I would suggest the following two changes for version AX 2012 R3. I would guess that this would also work in other AX 2012 versions. I could not find any budget analysis in AX 2009 and I doubt it exists there because it is part of the retail module which has been introduced in AX 2012.
First, customize the building of the tree control such that the first child will get selected instead of the root. To do that, customize method initTreeControl of class BudgetAnalysisInquiryHelper_PSN and add the following line after the tree has been expanded:

code :

_formTreeControl.select(_formTreeControl.getChild(_formTreeControl.getRoot()));

selectedNode = ctrlDimensionTree.getItem(ctrlDimensionTree.getSelection());
budgetAnalysisDimensionNode = selectedNode.data();
ctrlSelectedNode.text(budgetAnalysisDimensionNode.getNodeText());
element.getBudgetSummary(ctrlDimensionTree);

Button click to open new form and don't open if already have active form running

By : psT

Date : March 29 2020, 07:55 AM

I think the issue was by ths following , Either use ShowDialog and make it modal
Or use the reference reference to wizard or a bool flag to make the check. Make sure if you use a reference to set it null afterwards

code :

bool isOpen;

...

public void click()
{     
    if (!isOpen)
    {
        // do something
        wizard = new Wizard();
        wizard.Closing += (sender, args) =>
                            {
                                isOpen = false;
                            };
        isOpen = true;
        wizard.Show();
    }
...

Enabled = false;

Import registration form as a selection in program list, and close form when finished; when I return to open form again,

By : user2626049

Date : March 29 2020, 07:55 AM

hope this fix your issue I want to open a form that is represented in a register file that is opened by a click in register button in the login window (main.py) but when the registration form is closed, it can not be opened again in the same session. , Try it:

code :

from PyQt5.QtCore    import *
from PyQt5.QtGui     import *
from PyQt5.QtWidgets import *

class window(QDialog):           
    def __init__(self):
        super().__init__()
        self.initWin()

    def initWin(self):
        self.gridLayoutCreation()
        vBoxLayout = QVBoxLayout()
        vBoxLayout.addWidget(self.groupBox)
        self.setLayout(vBoxLayout)
# ---       self.show()

    def gridLayoutCreation(self):
        self.groupBox = QGroupBox('')
        gridLayout = QGridLayout()
        qutBtn = QPushButton('Exit')
        gridLayout.addWidget(qutBtn, 0, 0)
        qutBtn.clicked.connect(self.qut)
        self.groupBox.setLayout(gridLayout)

    def qut(self):
        self.close()



class MainWindow(QMainWindow):
    count = 0

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)

        self.mdi = QMdiArea()
        self.setCentralWidget(self.mdi)
        bar  = self.menuBar()
        file = bar.addMenu("File")
        file.addAction("New")
        file.addAction("cascade")
        file.addAction("Tiled")
        file.triggered[QAction].connect(self.openRegister)

    def openRegister(self, q):
        print("triggered-> q ->", q.text())
        if q.text() == "New":
            MainWindow.count = MainWindow.count+1
            sub = QMdiSubWindow()
            sub.setAttribute(Qt.WA_DeleteOnClose)
            sub.setWidget(window())                                # <---                                  
            sub.setWindowTitle("subwindow"+str(MainWindow.count))
            sub.setGeometry(100, 100, 400, 400)
            self.mdi.addSubWindow(sub)
            sub.show()

        if q.text() == "cascade":
            self.mdi.cascadeSubWindows()

        if q.text() == "Tiled":
            self.mdi.tileSubWindows()        

if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    ex = MainWindow()
    ex.setWindowTitle("Menu")
    ex.show()
    sys.exit(app.exec_())

import sys

from PyQt5.QtWidgets import QMainWindow, QMdiArea, QAction, QApplication

from register import window                                 # +++

class MainWindow(QMainWindow):
    count = 0

    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)

        self.mdi = QMdiArea()
        self.setCentralWidget(self.mdi)
        bar = self.menuBar()

        file = bar.addMenu("File")

        open_action = QAction('Open', self)                  # +++
        file.addAction(open_action)                          # +++

        file.triggered[QAction].connect(self.openRegister)
        self.setWindowTitle("Menu")

    def openRegister(self):
#        from register import window
        self.win = window(self.mdi)                           # +++

def main():
    app = QApplication(sys.argv)
    ex = MainWindow()
    ex.show()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

from PyQt5.QtWidgets import  QPushButton, QGridLayout, QDialog,QGroupBox, QVBoxLayout, QApplication


class window(QDialog):
#    def __init__(self):
#        super().__init__()
    def __init__(self, parent=None):
        super(window, self).__init__(parent)

        self.title = 'register'

        self.initWin()

    def initWin(self):
        self.setWindowTitle(self.title)


        self.gridLayoutCreation()
        vBoxLayout = QVBoxLayout()
        vBoxLayout.addWidget(self.groupBox)
        self.setLayout(vBoxLayout)
        self.show()

    def gridLayoutCreation(self):
        self.groupBox = QGroupBox('')
        gridLayout = QGridLayout()

        qutBtn = QPushButton('Exit')

        gridLayout.addWidget(qutBtn, 0, 0)
        qutBtn.clicked.connect(self.qut)


        self.groupBox.setLayout(gridLayout)

    def qut(self):
        self.close()


# win = window()
if __name__ == '__main__':
    import sys
    app = QApplication(sys.argv)
    ex = window()
    ex.setWindowTitle("Menu")
    ex.show()
    sys.exit(app.exec_())

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton
from PyQt5.QtGui import QPixmap, QIcon


app = QApplication(sys.argv)
mainRoot = QWidget()
mainRoot.setWindowTitle('Login')
mainRoot.setWindowIcon(QIcon('im.png'))
lblBackground = QLabel(mainRoot)
pic = QPixmap('Ok.png')
lblBackground.setPixmap(pic)
mainRoot.setGeometry(600, 300, 322, 220)

user = QLabel('user name', mainRoot)
user.move(50, 50)
password = QLabel('password', mainRoot)
password.move(50, 80)

username_edt = QLineEdit(mainRoot)
username_edt.move(110, 50)
password_edt = QLineEdit(mainRoot)
password_edt.setEchoMode(QLineEdit.Password)
password_edt.move(110, 75)
signin = QPushButton('sign in', mainRoot)
signin.move(20, 110)
registerBtn = QPushButton('register ', mainRoot)
registerBtn.move(120, 110)
qut_btn = QPushButton('Quit', mainRoot)
qut_btn.move(220, 110)

def registerUser():
#    import register
    from register import registerForm    
    form = registerForm()
    form.show()


registerBtn.clicked.connect(registerUser)
qut_btn.clicked.connect(quit)

mainRoot.show()
sys.exit(app.exec_())

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QComboBox, QRadioButton
from PyQt5.QtGui import QPixmap

app = QApplication(sys.argv)

def registerForm():                                       # <=======
    signRoot = QWidget()
    signRoot.setWindowTitle('Registration')
    lblBackground = QLabel(signRoot)
    pix = QPixmap('image\pic-10.jpg')
    lblBackground.setPixmap(pix)
    signRoot.setGeometry(600, 300, 400, 300)

    fullNameLbl = QLabel('Full Name', signRoot)
    fullNameLbl.move(100, 50)
    userNameLbl = QLabel('User Name', signRoot)
    userNameLbl.move(100, 80)
    passWord = QLabel('password', signRoot)
    passWord.move(100, 110)
    typeLbl = QLabel('Type', signRoot)
    typeLbl.move(100, 140)
    departmentLbl = QLabel('Department', signRoot)
    departmentLbl.move(100, 180)

    fullName = QLineEdit(signRoot)
    fullName.move(200, 50)
    userName = QLineEdit(signRoot)
    userName.move(200, 80)
    passWord = QLineEdit(signRoot)
    passWord.setEchoMode(QLineEdit.Password)
    passWord.move(200, 110)

    maleType = QRadioButton('Male', signRoot)
    maleType.move(200, 140)
    femaleType = QRadioButton('Female', signRoot)
    femaleType.move(270, 140)
    department = QComboBox(signRoot)
    department.move(200, 180)
    submitted = QPushButton('Submit', signRoot)
    submitted.move(150, 240)
    qut_btn = QPushButton('Quit', signRoot)
    qut_btn.move(250, 240)

    def qutRegisterForm():
            signRoot.close()

    qut_btn.clicked.connect(qutRegisterForm)
#    signRoot.show()

    return signRoot                                           # <=======