# ContextMenuOpened

Learn the syntax and arguments for the ContextMenuOpened event available in Spread for ASP.NET.

## Content

Occurs when the menu is shown.

## Syntax

[Inline HTML]

```html
<ELEMENT ContextMenuOpened = "handler" ...>
```

[JavaScript]

```javascript
FpSpread1.addEventListener("ContextMenuOpened", handler, ...)
```

or

```javascript
FpSpread1.onContextMenuOpened = handler
```

## Arguments

***event.SelectedItem***
LI element that represents a menu item
***event.ContextMenu***
Menu type that caused the event to occur
***event.spread***
Spread that raises the event

## Return Type

None

## Remarks

This event is triggered when the menu is opened.

## Example

This example JavaScript code maps the event for the Spread on the client side.

```javascript
window.onload = function () {
    var spread1 = document.getElementById("<%=FpSpread1.ClientID %>");
    if (document.all) {
        // IE
        if (spread1.addEventListener) {
            // IE9
            spread1.addEventListener("ContextMenuOpened", mopened, false);
        } else {
            // Other versions of IE and IE9 quirks mode (no doctype set)
            spread1.onContextMenuOpened = mopened;
        }
    } else {
        // Firefox
        spread1.addEventListener("ContextMenuOpened", mopened, false);
    }
}

function mopened(event) {
    alert("event.ContextMenu");
}
```

## See Also

[Adding a Context Menu](/spreadnet/docs/latest/online-asp/overview/spweb-devguide/spweb-interaction/spweb-interact-control/spweb-contextmenu)
[Scripting Members](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members)
[MenuClicked](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allevents/CSSR-onMenuClicked)
[ContextMenuClosed](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allevents/CSSR-onContextMenuClosed)
[ContextMenuOpening](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allevents/CSSR-onContextMenuOpening)