Determine whether the active check box is checked in Winforms - winforms

Question

I am developing a Windows Forms Application using Visual Studio in Visual C++. My form has 96 check boxes on it. Rather than create 96 Click events, I believe that there's a way to create a single Click event that is called when any check box is clicked. Within the Click event, I need to determine whether the active checkbox is Checked or Not Checked. While this should be easy, I can't seem to figure it out!
I got it to work with the code below, but I'm sure there's a better way.
if (sender == checkBox_D1)
{
if (checkBox_D1->Checked)
isChecked = true;
}
else if (sender == checkBox_D2)
{
if (checkBox_D2->Checked)
isChecked = true;
}
else
return; // Invalid sender - should not get here!
if (isChecked)
{
// Do something
}
else
{
// Do something else
}
I also tried the code below but activeCheckBox is not a Checkbox object so it doesn't work.
Control^ activeCheckBox = ActiveControl;
activeCheckBox->Text returns the Text property of the Checkbox
activeCheckBox->Checked doesn't compile. The error is 'Checked' : is not a member of 'System::Windows::Forms::Control'
It seems like sender has the data that I need but I don't know how to access it.
Is there a way to declare a Checkbox as follows?
CheckBox activeBox;
and then assign activeBox to the Checkbox that has the focus
activeBox = ???
// Then just need to do this!
if (activeBox.Checked)
isChecked = true;
Thank you for the help.

Answer 1

Yes you can reuse the same function for all your Check boxes.
void App3::ItemPage::checkBox_Checked(Platform::Object^ sender, Windows::UI::Xaml::RoutedEventArgs^ e)
{
CheckBox^ activeCheckBox = safe_cast<CheckBox^>(sender);
if (activeCheckBox->Checked)
{
if (activeCheckBox->Name == "checkBox_D1") {
//Do something when this check box is clicked.
}
if (activeCheckBox->Name == "checkBox_D2") {
//Do something when this check box is clicked.
}
}
}

Answer 2

For all checBoxes you will assign the same CheckedChanged event:
checkBox1.CheckedChanged += newCheckBoxCheckedOrUnchecked_CheckedChanged;
checkBox2.CheckedChanged += newCheckBoxCheckedOrUnchecked_CheckedChanged;
//...
//...
checkBox95.CheckedChanged += newCheckBoxCheckedOrUnchecked_CheckedChanged;
checkBox96.CheckedChanged += newCheckBoxCheckedOrUnchecked_CheckedChanged;
Checks the state of all checkBoxes:
private void newCheckBoxCheckedOrUnchecked_CheckedChanged(object sender, EventArgs e)
{
foreach (Control control in this.Controls)
{
if (control.GetType() == typeof(CheckBox))
{
var checkBox = (CheckBox) control;
var checkBoxName = checkBox.Name; // To know which checkbox we are talking about
var checkBoxIsChecked = checkBox.Checked;
// Do your stuff
MessageBox.Show(checkBoxName + #" is " + (checkBoxIsChecked ? "checked" : "not checked"));
}
}
}
Checks the state of only the checkBox where the value was changed:
private void newCheckBoxCheckedOrUnchecked_CheckedChanged(object sender, EventArgs e)
{
var checkBox2 = (CheckBox)sender;
var checkBoxName2 = checkBox2.Name; // To know which checkbox we are talking about
var checkBoxIsChecked2 = checkBox2.Checked;
// Do your stuff
MessageBox.Show(checkBoxName2 + #" is " + (checkBoxIsChecked2 ? "checked" : "not checked"));
}