i dont want to click the button. instead, i just want to run the click event code. how would i do this?
button1_click(null, new EventArgs() );
Option: use PerformClick().
Take a look here: How to: Call a Button's Click Event Programmatically.
The advantage here is that the event behavior will be exactly the same as a real button click (as oposed of calling button1_click directly).
But none of this options is the best IMHO. If you need to call the event handler code, you need a new method! Just refactor the old button1_click into a new, standard method and call it from wherever you want.
From inside or outside the Form where the Button is? Simplest thing is to just call the function:
Button1_Click(Button1, EventArgs.Empty);
Try a keybd_event with p/invoke http://msdn2.microsoft.com/en-us/library/ms646304(VS.85).aspx
I sometimes do that by actually calling the event handler function, that's if I actually implemented it.
Literally call it like:
button1_Click(this, new EventArgs());
Related
Usually use this code for invoker the event from controller ex: button
button7.Click += new System.EventHandler(this.button7_Click);
or
button7.PerfomClick();
but if the button is disable not work and i need call the event even if disabled, it is possible?
PerformClick won't work for disable button. Instead of PerformClick, you can call the handler directly.
button7_Click(button7, EventArgs.Empty)
An event handler is nothing more than a function, so you could call it directly.
C# WinApps: Is there any way that I can check if something like CTRL-V is pressed but not in the KeyDown,PreviewKeyDown,KeyPress,etc ... events? those are being eaten by some other parts in my App and it is so hard to find them so I thought Ok for this contorl lets check the pressed keys in its GotFocus event! Is it possible?
Not sure what you mean by the events being "eaten". Events can call multiple handlers. So even if the event is already being subscribed to by one handler, you can subscribe to it with another handler and it should work just fine.
Another option would be to subclass the control you are using and use the subclass instead. Then you can override the On{event} methods and do anything you want with those (be sure to call the base method as well to ensure the behavior of the original class is still in place).
HTH
An application I'm writting in silverlight/c# consists of 13 permanent buttons that when clicked perform a simple navigation to another page.
The problem is my code behind has 13 different event handlers(alot of code) for a nearly identical purpose.
Is there a way to detect which button was pressed so that a single event handler gets fired, and a simple if statement within could determine which page to go to?
yes: you can use the same method for all buttons, and use the parameter "sender" as "sender.Name" to get the name of the pressed button.
In the designer code of your program, tack on the same event handler for all 13 buttons (look for the code that has += and put the same event handler for all of them).
Notice that the event handler has an object (s) parameter. You can use this parameter as follows:
if(s.Name = "Button1") {//button 1 stuff}
else if (s.Name = "Button2") {button 2 stuff}
etc..
EDIT: should have been s.Name = "Button1, 2, 3, etc.."
Test the sender parameter of the button click event handler - you'll be able to test which button was the sender.
Use a Dictionary using 'sender' as key. The 'value' could be the page to navigate to.
If you have lots of code in your event handler you should break that out to a separate method anyway and send the button specific parameters to that method.
But you can still have one event handler if you look at the sender argument.
i want to FIre the button Click event When My Window is Loaded..
How Can i Achieve it in Wpf?
Create a single function with the shared behavior in your window, then call that function from both your loaded handler and your click handler.
As per this blog post in WinForms this was really easy by just calling PerformClick(), but in WPF you can do it with Automation, however as a commenter mentioned it's really easy if you have access to the button to just use RaiseEvent.
someButton.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
But as previously answered, if you only have a single handler that needs to be notified, then simply call that handler method directly.
You could use Automation to do it aswell - I've seen this suggested some places as the more flexible/robust method to use, but it seems a bit heavy weight to me compared to just calling the method you already have directly.
in you page_loaded event handler method, make a call to the click event like this:
_buttonName_click(sender, new RoutedEventArgs())
Trgger this event on Button whic u wanted to click
button.performclick();
Can anyone tell me how to raise click event of button control (or for that matter for any event).
Platform: .net 2.0/3.0/3.5
Language: c#
Domain: Windows Application, WinForms, etc.
You can use the Button.PerformClick method.
Maybe the solution is much more simple:
Maybe you don't really want your code "to click the button".
Do you just want to run the code which is behind the button from another place in the form?
If yes, put the code into a separate method (like "DoActionXXX") and call the method from the button and from everywhere else where you need it.
You can also look into Windows Accessibility or some UI automation framework that allows you to programmatically cause UI controls to respond to user gestures. If a control does not offer a way for its events to be programmatically triggered like PerformClick, you can derive from that control and expose a public method like PerformnXXX that when called internally invokes the event handlers subscribed to a particular event.
button click and to new my manually window
ex.. dital.cs open the may window
I dont think sending click events is the best way from a design point of you just make your event handler call another function. That way you always have access to that function.
so ..
void myEventHandler(ObjectwhoSentTheMessage O, Event e)
{
MyOtherFunction();
//consume the event after if you wish etc
}