Question

11

Display exception message through javascript alert in asp.net

rated 0 times [ 15] [ 4] / answers: 1 / hits: 21053 / 13 Years ago, thu, june 23, 2011, 12:00:00

I am trying to show exception message through javascript alert box.

Here is the sample code.

public static void HandleException(Page page, Exception ex)

{

    string message = ex.Message.ToString();

    ScriptManager.RegisterClientScriptBlock(page, page.GetType(), , alert('+message+');, true);



}

It runs if i give literal values for the string variable.
e.g.

string message = Hello World;

But it fails if I give message = ex.Message;

Any Idea?

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answered 13 Years ago daren · Accepted Answer

You need to encode it, for example using JavaScriptSerializer because if the message contains some escape characters like ' or this will definitely break your javascript:

var message = new JavaScriptSerializer().Serialize(ex.Message.ToString());

var script = string.Format(alert({0});, message);

ScriptManager.RegisterClientScriptBlock(page, page.GetType(), , script, true);