adding javascript window.confirm to linkbutton

[darrel]

Is it possible to pre-empt the javascript function used to do a postback
from a linkbutton?

I'd like to use linkbutton to delete a record and want to add a confirmation
box via javascript "are you sure you want to delete this record?" before it
executes the postback. The javascript is straightforward for this, but have
no idea how to have that intercept the post-back script.

-Darrel

[Mark Rae [MVP]]

"darrel" <no*****@nowher e.comwrote in message
news:%2******** ********@TK2MSF TNGP02.phx.gbl. ..

Is it possible to pre-empt the javascript function used to do a postback
from a linkbutton?

I'd like to use linkbutton to delete a record and want to add a
confirmation box via javascript "are you sure you want to delete this
record?" before it executes the postback. The javascript is
straightforward for this, but have no idea how to have that intercept the
post-back script.

Any JavaScript function which returns false will intercept a postback e.g.

<asp:Button ID="MyButton" runat="server" OnClick="MyButt on_Click"
OnClientClick=" return confirm('Are you sure you want to delete this
record?');" Text="Delete" />

In the above example, when a user clicks on the Delete button, they will be
prompted with a client-side Yes/No alert - if they click Yes, the postback
will happen and run the code in the server-side MyButton_Click method - if
they click No, the postback will be intercepted and nothing further will
happen...
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[darrel]

<asp:Button ID="MyButton" runat="server" OnClick="MyButt on_Click"

OnClientClick=" return confirm('Are you sure you want to delete this
record?');" Text="Delete" />

Slick, but can this be done with a linkButton? I don't see an OnClientClick
property for that.

-Darrel

[Mark Rae [MVP]]

"darrel" <no*****@nowher e.comwrote in message
news:u9******** ******@TK2MSFTN GP05.phx.gbl...

><asp:Button ID="MyButton" runat="server" OnClick="MyButt on_Click"
OnClientClick= "return confirm('Are you sure you want to delete this
record?');" Text="Delete" />

Slick, but can this be done with a linkButton? I don't see an
OnClientClick property for that.

Yep - in the Page_Load, add the following code:

MyLinkButton.At tributes.Add("o nclick", "return confirm('Are you sure you
want to delete this record?');");
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[darrel]

MyLinkButton.At tributes.Add("o nclick", "return confirm('Are you sure you

want to delete this record?');");

Hmm...I've done that, but the event handler still executes for the
linkButton regardless of whether I click OK or CANCEL in the confirmation
window.

-Darrel

[Mark Rae [MVP]]

"darrel" <no*****@nowher e.comwrote in message
news:OC******** ******@TK2MSFTN GP03.phx.gbl...

>MyLinkButton.A ttributes.Add(" onclick", "return confirm('Are you sure you
want to delete this record?');");

Hmm...I've done that, but the event handler still executes for the
linkButton regardless of whether I click OK or CANCEL in the confirmation
window.

Actually, having just tried this, <asp:LinkButton most certainly *does*
have an OnClientClick property:
http://msdn2.microsoft.com/en-us/lib...ck(vs.80).aspx
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Mark Rae [MVP]]

"darrel" <no*****@nowher e.comwrote in message
news:Oe******** ******@TK2MSFTN GP05.phx.gbl...

Don't I still need to apply some sort of onClick event to the linkButton,
though? I'm not sure how the above script would know to intercept the
onClick event if there's nothing to trigger it.

MyLinkButton.At tributes.Add("o nclick", "return confirm('Are you sure you
want to delete this record?');");
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Mark Rae [MVP]]

"darrel" <no*****@nowher e.comwrote in message
news:ux******** ******@TK2MSFTN GP05.phx.gbl...

Well, this is where my lack of Javascript skills begins to show. ;0)

Here's the function I'm using curtesy of Collin:
Mark, your onclick event makes sense,

You can't have both...
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[darrel]

>Here's the function I'm using curtesy of Collin:

>Mark, your onclick event makes sense,

You can't have both...

Right. But that's kind of going back to my original problem...addin g the
confirmation on the OnClick event of the linkbutton does NOT intercept the
postback. Regardless of whether or not I click OK or CANCEL, the postback is
still executed.

-Darrel

[darrel]

Isn't JavaScript case-sensitive, so onclick should be onClick?

'doh! yea, good catch!

That said, I still get the 'mybutton has no properties' error.

-Darrel