Hello, I did several searches, yet still not found a solution to how do we do server side validation in Settings page.

Anyone could shed some light on how could I stop the page from redirecting to the Home page when I click Update.

When I encounter invalid settings (which must be checked from server side), I want to display some messages but the page keep redirecting.

For client side validation, I tried to do something like this

<script language="javascript" type="text/javascript">

function isValid()
{

// Some logic here and return true/false accordingly.
// The checking logic is slightly

}

</script>

On server side I tried to inject javascript to the CommandButton cmdUpdate like this

var cmdUpdate = this.Parent.TemplateControl.FindControl("cmdUpdate") as CommandButton;
if (cmdUpdate != null) cmdUpdate.Attributes.Add("onclick", " if (!isValid()) return false;");

but no luck.

When I view source code. the javascript "if" statement is injected in "onclick" event of the "<span>" element of the CommandButton. But the postback of the button is in the "onclick" event of the "<input>" element inside so it seems like the onclick of the <span> overrides the onclick of the <input>????.

For e.g <span onclick="...."><input onclick="...">.....</input></span> <-- this is how the CommandButton is generated on the client.

Thanks everyone for your time reading this and excuse my broken English.

:(

Regards

Alex To

Thanks for your prompt reply.

I'm still looking for an example, I tried to put a custom validation and set value IsValid of a target control to False but still after the UpdateSettings() method, the page is redirected to Home.

Will try to search for a sample module and post again if I happen to solve this.

Thanks