Call a c# method while pressing the ESC key.

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1.00/5 (2 votes)

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C#

ASP.NET

I want to Call a c# method while pressing the ESC key.
But my c# method not a static method.

Posted 25-Jun-14 23:53pm

Prasad Avunoori

Updated 26-Jun-14 0:33am

v2

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George Jonsson 26-Jun-14 6:10am

Do you want to call a method once when the ESC key is pressed, or do you want to call it as long as the key is pressed?
What kind of application do you have? Windows Form, Console application or what?

Prasad Avunoori 26-Jun-14 6:13am

It's an ASP.net application. I want to call a method once only when the Esc is pressed.

George Jonsson 26-Jun-14 6:26am

In that case I cannot really help you. ASP.net is not my area of expertise.

OriginalGriff 26-Jun-14 6:25am

So, it's not static, and it's not a page instance method. So what is it?
Where is it defined, and how is it defined?

Prasad Avunoori 26-Jun-14 6:31am

public void MyMethod()
{

///Code
}

It's defined in aspx.cs file.

OriginalGriff 26-Jun-14 6:37am

Then you need an instance of the class that it is declared within in order to use it.
You can't call instance methods without the class instance, any more that you can drive without a car! :laugh:

How are you detecting the ESC key?

Prasad Avunoori 26-Jun-14 7:02am

I think you are not understood my point.

OriginalGriff 26-Jun-14 7:10am

Probably not - I am trying to work out how you detect the esc key, because there are at least two different ways when dealing with a web app and teh solution fro one would not fix the other!

Remember, I can't see your screen, or access your HDD - so I only get to work with what you tell me! :laugh:

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Raul Iloc · Answer 1 · 2014-06-26T00:46:00

Into your page (or if is for more pages into your master page) you should use JavaScript and AJAX call of your method like in the next example:

<script type="text/javascript">
function onKeydown(evt) {
            if (evt != undefined &&  evt.keyCode == 27) //Esc
            {
                $.ajax({
                    type: "POST",
                    url: "/Account/OnEscHandler"  //Here you should change the URL to your method!
                });
            }
        };
        window.document.onkeydown = onKeydown;
</script>