Re: MessageBox questions

From: Scott M. (s-mar_at_nospam.nospam)
Date: 06/04/04 

Date: Thu, 3 Jun 2004 23:09:30 -0400

By the way, you probably want to rename your function to something other
than MsgBox since that is a function in the VBScript (and also in VB.NET)
language and could conflict with the interpretation of your function.

"Russ" <russk2@eticomm.net> wrote in message
news:v6lvb0d1mv7fjb3p936rsdkm9ad5avtsed@4ax.com...
> Thanks to Alvin, Scott & Bruce for the help. Alvin, of course your
> line worked right away, but then I wanted more. Namely I wanted to be
> able to change the text that was displayed dynamically. It took me a
> while to figure this out but eventually I came up with a function:
>
> private void MsgBox (String msg)
> {
> String s = "<script>alert('" + msg + "')</script>";
> LiteralControl lc = new LiteralControl (s);
> Page.Controls.Add (lc);
> }
>
> I will extend it to handle confirm and prompt boxes, and to return the
> values. What I cannot figure out is: Why the heck aren't functions
> like this in the library, instead of making people deal with the
> script? I suppose it is not big deal to anyone who has been using
> jscript for a while, but to someone like me who's only experience with
> script was from AWK about a hundred years ago - whew!
>
> Thanks again, Russ
>
>
> On Thu, 03 Jun 2004 17:07:39 -0400, Russ <russk2@eticomm.net> wrote:
>
> >I've been trying to figure out how to show a simple messagebox with an
> >OK button in my web client program (C#). I have looked at every
> >reference to JScript and MessageBox that seemed even remotely like it
> >could help, both in the VS help and in this NG. I found lots of
> >examples of people saying how easy it is and showing examples, and
> >examples in the help. But I have two problems:
> >
> >1. All the examples show all the code in HTML, usually involving a
> >user action such as a button click. I need to show this message box
> >as a result of a return from a web service call. So the code to
> >invoke the message box must be in the code-behind.
> >
> >2. None of the examples work!! This is the most frustrating thing I
> >have seen in a long time. Everyone seems to say "Try this it works",
> >and I try it and can't even get close! First off, when I paste some
> >script into my HTML, like:
> >
> ><script language="C#" runat="server">
> >public void Page_Load(Object sender, EventArgs e) {
> >// Form the script to be registered at client side.
> >String scriptString = "<script language=JavaScript> function DoClick()
> >{";
> >scriptString += "showMessage2.innerHTML='<h4>Welcome to Microsoft
> >.NET!</h4>'}";
> >scriptString += "function Page_Load(){ showMessage1.innerHTML=";
> >scriptString += "'<h4>RegisterStartupScript Example</h4>'}<";
> >scriptString += "/";
> >scriptString += "script>";
> >
> >if(!this.IsStartupScriptRegistered("Startup"))
> > this.RegisterStartupScript("Startup", scriptString);
> >}
> ></script>
> >
> >It is immediately converted to look like this:
> >
> >&lt;script language="C#" runat="server"&gt;
> >public void Page_Load(Object sender, EventArgs e) {
> >// Form the script to be registered at client side.
> >String scriptString = "&lt;script language=JavaScript&gt; function
> >DoClick() {";
> >scriptString += "showMessage2.innerHTML='&lt;h4&gt;Welcome to
> >Microsoft .NET!&lt;/h4&gt;'}";
> >scriptString += "function Page_Load(){ showMessage1.innerHTML=";
> >scriptString += "'&lt;h4&gt;RegisterStartupScript
> >Example&lt;/h4&gt;'}&lt;";
> >scriptString += "/";
> >scriptString += "script&gt;";
> >
> >if(!this.IsStartupScriptRegistered("Startup"))
> > this.RegisterStartupScript("Startup", scriptString);
> >}
> >&lt;/script&gt;
> >
> >Notice that all the < and > characters have been converted to &lt; and
> >&gt;
> >
> >Then when I manually edit the lines to correct them, the example will
> >not run. Usually it will compile and run, sometimes I get a server
> >error, but more often it seems to simply echo the code to the page.
> >The example above came the closest to working. When I added:
> >
> > <span id="showMessage1"></span>
> > <br>
> > <input type="button" value="ClickMe" onclick="DoClick()">
> > <br>
> > <span id="showMessage2"></span>
> >
> >in the form, it did put up a button, but when I click it, I get a
> >status line that says "error on page".
> >
> >Where is the A to Z tutorial that shows exactly how to add and make
> >this script work in a web client application?
> >
> >Even if the above example will work it seems terribly over complicated
> >just to put up a simple box! The validator summary can do it by just
> >including MessageBox="true". No script! But of course this will not
> >work for me since I need to tie it to a web service response.
> >
> >Please help?
> >
> >Thanks, Russ
> >
>