I created a checkbox list with 8 chechboxes added dynamically. The idea of my program is : when a box is checked, a chart appears on my plotter, when i uncheck it, it disappears.
My problem is that I dont know how to manage the events to do that because I added the checkboxes dynamically and I need 8 different events for 8 different charts.
Thanks.
You can use one event for all of them. And inside of the event you will get the name of the control, which fired the event. Something like this:
private void CheckBox_Click(object sender, RoutedEventArgs e)
{
CheckBox senderChk = sender as CheckBox;
switch (senderChk.Name)
{
case "checkBox1": //do something
case "checkBox2": //do something
}
}
An answer here suggests using .Name property but for dynamically-created checkboxes that may now work well.
CheckBox chx;
chx.Tag = "Chart 1"; // put these tags in an enum or at least constants
chx.Click += chx_Click;
void chx_Click(object sender, RoutedEventArgs e)
{
CheckBox chx = sender as CheckBox;
if (chx != null && chx.Tag != null)
{
switch (chx.Tag)
{
case "Chart 1":
myChart1.Visibility = chx.IsChecked? Visibility.Visible: Visibility.Collapsed;
break;
case "Chart 2": //...
break;
default:
break;
}
}
}
The "sender" parameter of the event handler indicates which control raised an event.
Somewhere, you create a control. Make sure you keep a reference to it somewhere, either as a member variable, in a dictionary or whatever.
Then, in your event handler, do the following:
If(sender==myControl)
{
...do something...
}
Elseif (sender==myOtherControl)
{
...do something else...
}
ItemsControl with a proper DataTemplate to begin with, then he could program his application logic against Data Items instead of UI.