NEWBIE: passing error to javascript alert

[gijeet]

Hello,
is there a way call a javascript function directly from within asp
page?
Example, here is page load event in C#

protected void Page_Load(object sender, EventArgs e){

// create error
int Var0 = 0;
try {
int iVar1 = 8/Var0;
}

catch (Exception ex){

string sExMsg = ex.Message;


//javascript works fine with string constant
Response.Write("<script type='text/javascript'>alert('In Catch');</
script>");

//can write error to page no problem
Response.Write(sExMsg);

// would like a popup with error
Response.Write("<script language='javascript'>doAlert(" + sExMsg +
");</script>");
Response.Write("<script language='javascript'>function doAlert(sExMsg)
{alert(sExMsg);}</script>");

//write error to log since I can't pop-it-up
//StreamWriter sw = File.AppendText(Server.MapPath("~/error.log"));
//sw.WriteLine(sExMsg);
//sw.Close();

}

}

Any help for a newbie is appreciated

Gi

 

[Mark Rae [MVP]]

Any help for a newbie is appreciated

ClientScript.RegisterStartupScript(GetType(), "error", "alert('In Catch');",
true);

 

[gijeet]

ClientScript.RegisterStartupScript(GetType(), "error", "alert('In Catch');",

true);

Thanks but not sure how to use this. Where do I put this? class
level before page load event? within page load? do I need a
RegisterStartupScript for each alert I wish to use?

Gi

 

[Mark Rae [MVP]]

Thanks but not sure how to use this. Where do I put this?

Wherever you like, so long as you don't Redirect from the page...

Basically, it will send down the JavaScript to run after the page had
loaded...

do I need a RegisterStartupScript for each alert I wish to use?

Yes.

Incidentally, why are you actually doing this...?

 

[gijeet]

Incidentally, why are you actually doing this...?
basically for debugging. I don't like response.writes and I'm trying
to learn javascript. but if you know of a better way to popup alerts,
let me know.

 

[Mark Rae [MVP]]

basically for debugging. I don't like response.writes and I'm trying
to learn javascript. but if you know of a better way to popup alerts,
let me know.

There's no need to popup anything in order to debug in Visual Studio.NET -
it's all built-in:
http://www.wrox.com/WileyCDA/Section/id-305946.html

 

[Guest]

use the debugger to debug. alert debugging is asp classic style

 

[Eliyahu Goldin]

This can help you:
How to Pass Messages and Actions between Server and Client
http://usableasp.net/DeveloperPage....o/HowToPassMessagesBetweenServerAndClient.htm


--
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
http://usableasp.net

 

[Mark Rae [MVP]]

This can help you:
How to Pass Messages and Actions between Server and Client
http://usableasp.net/DeveloperPage....o/HowToPassMessagesBetweenServerAndClient.htm

Not much use in this particular case, though, as the OP's requirements for
this were for debugging a la ASP Classic...