# ErrorMessageShown

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

## Content

Occurs when an error message is displayed on the client side.

## Syntax

[Inline HTML]

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

[JavaScript]

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

or

```javascript
FpSpread1.onErrorMessageShown = handler
```

## Arguments

***event.spread***
Spread control that raises the event
***event.row***
Row coordinate of the cell with the error message
***event.col***
Column coordinate of the cell with the error message
***event.isValid***
Whether the editing value is valid
***event.errorMessage***
Error message

## Return Type

None

## Remarks

This event is triggered when an error message is displayed on the client side.

## Example

This is a sample that contains the event. On the client side, the script that contains the event would look like this:

```javascript
<script type="text/javascript">
   function error(event) {
    alert("error");
   }
</script>
```

## See Also

[EditStart](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allevents/CSSR-onEditStart)
[StartEdit](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allmeths/CSSR-StartEdit)
[EndEdit](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members/clientscript-allmeths/CSSR-EndEdit)
[Scripting Members](/spreadnet/docs/latest/online-asp/overview/spweb-clientscriptref/clientscript-members)