ASP.NET

Re: how to avoid postback on button click event in asp.net/javascript?

4-Sep-07 9:49

I didnot get you. Can you elaborate please?

thank u

Christian Graus4-Sep-07 10:21

Re: how to avoid postback on button click event in asp.net/javascript?

4-Sep-07 10:21

You can add this code to any button

OnClickClick="return false();"

and the click event will never fire. Replacing this with a call to a method that works out if it should postback, and returns true or false, will allow you to control your ASP.NET button from javascript.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

dreddy74-Sep-07 11:26

Re: how to avoid postback on button click event in asp.net/javascript?

4-Sep-07 11:26

On refresh, the page is re submitting the onclick event for print. It opens a dialog:
"The page cannot be refreshed without resending the information.Click retry to send information again. or cancel to return to the page u were trying to view".
On click of both retry or cancel ,the page still runs the code in print click. Can you help me? I tried using return false in onclientclick event.

Christian Graus4-Sep-07 11:29

Re: how to avoid postback on button click event in asp.net/javascript?

4-Sep-07 11:29

Ah... OK. Now I see the issue. A refresh will indeed reprocess the postback. Why do you need to do a postback to do printing ? I thought that was done in javascript ?

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

ChrisKo4-Sep-07 12:08

ChrisKo

4-Sep-07 12:08

My guess is that he's using an ASP:Button control for the print button and using the OnClientClick property for the javascript. I think a postback will happen in this instance and that might be what's causing the problem. I'm not sure how that script will affect the postback if you return false; as Christian mentioned.

Maybe if you use

button.Attributes.Add("OnClick","Javascript:PrintMethod();return false;");

instead of the OnClientClick property it will behave differently. I don't have time to test this out right now, but maybe that would work?

Re: how to avoid postback on button click event in asp.net/javascript?

Christian Graus4-Sep-07 14:59

Re: how to avoid postback on button click event in asp.net/javascript?

4-Sep-07 14:59

If he adds a ClientClick only, then the button should not post back, but if he returns false, it definately would not post back.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Lucky Sheikh5-Sep-07 0:36

Re: how to avoid postback on button click event in asp.net/javascript?

5-Sep-07 0:36

hey guy wht r u doing man if u want to avoid postback
just type at form ispostbackpage=false simply
byeeeee
hope u understand

lucky

dreddy75-Sep-07 4:25

Re: how to avoid postback on button click event in asp.net/javascript?

5-Sep-07 4:25

isPostBack is a readonly property right? so I am not able to do that.

And actually I am using master page and content pages in my project. One of my content page has a table which needs to be printed on print button click. I have used asp:button control for this.

And in my print_click event in vb, i have written the code like this:

<br />
<br />
Protected Sub btnPrint_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnPrint.Click<br />
<br />
            Dim printScript As String = "<script language='javascript'>" & _<br />
            "var foo = document.getElementById( 'plansheet' ); var bar = open('about:blank', 'myPopup', 'print'); bar.document.body.innerHTML = foo.innerHTML; bar.print();</script>"<br />
<br />
            ClientScript.RegisterStartupScript(Me.GetType(), "PrintScript", printScript.ToString())<br />
           <br />
<br />
    End Sub

The 'plansheet' is the id of my html table. This code opens a separate blank page with table alone in it and pops up the print dialog.
When i use/cancel print in this dialog and go back to the original page and when i click F5 or refresh, the print is getting triggered once again and is openeing up the blankpage and printdialog once again.

Hope I am clear in explaining my scenario.

Thank you

dreddy75-Sep-07 4:51

Re: how to avoid postback on button click event in asp.net/javascript?

5-Sep-07 4:51

Hey guys , I got it!!!!!!!!!!!! Smile | :)

Well I thought I cannot place javascript inside a content page as it will not be having a tag. But now, I have used a html button for print and used javascript right below the tag.
This is not triggering the print on refresh!

Thank you one and all for helping me out!

cheers Smile | :)

Lucky Sheikh5-Sep-07 18:35

Extending the delete/edit buttons in gridview

5-Sep-07 18:35

hey just add a button in ur report then at ur form
write code in reportviewer me.hide on click event it will autmatically and when u want me.show simply
first of all u have to invisible the reportviewer
hope u understand
byeeeeeeeeeee

lucky

kumswa4-Sep-07 7:59

kumswa

4-Sep-07 7:59

Hi all,

I would like to extend the delete and edit buttons in my gridview so that in addition to deleting and editing the underlaying data, it will also log the changed data, the date and time of change etc.

Can someone kindly point me the right direction?

Thanks!

Re: Extending the delete/edit buttons in gridview

Christian Graus4-Sep-07 8:16

4-Sep-07 8:16

Just make the buttons call your own SQL, which does these things in your database.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

ViewState Problem

RoyRose784-Sep-07 6:41

RoyRose78

4-Sep-07 6:41

Hey all,

I'm having this weird problem with an aspx page.
In this page I have 2 dropDownList controls:
_TableDropDown - has items that I entered at design time. the items are: Cities, Titles etc..
_RowsDropDown - filled after _TableDropDown is autoPostBack to server from DB(when selecting Cities of _TableDropDown the _RowsDropDown is filled with YNC, Paris etc.. and when selecting Titles of _TableDropDown the _RowsDropDown is filled with Manager, Developer etc...)

everything is ok until I press the back button. Sigh | :sigh:

this is what I did from IE:
1. got the page the first time - the _TableDropDown with Cities and _RowsDropDown with the data from DB.
2. changed the _TableDropDown value to Titles - postback occured and the page got back to me with the right data.
3. press back button - now the _TableDropDown is set with Titles value BUT _RowsDropDown values filled with cities data..

I know that when pressing back button of IE there is NO postback to the server so I guessed it's something with the viewState...

Is someone familier with the problem?
What should I do to get over this? Cry | :((

Thank you very much,
RoyRose

Re: ViewState Problem

Christian Graus4-Sep-07 6:56

4-Sep-07 6:56

If there is no postback, then viewstate cannot have anything to do with it

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: ViewState Problem

RoyRose784-Sep-07 8:16

RoyRose78

4-Sep-07 8:16

There is no postback & it's find with me cause I don't need anything from the server.

All I want is that when I press IE's back button it'll go to the state it was and not to an imposible state!

Re: ViewState Problem

Christian Graus4-Sep-07 8:29

e-commerce functionality ASP.NET shopping carts

4-Sep-07 8:29

The way to do this, is to store the value in the URL, and to do a redirect to that URL, on postback. Otherwise, the step where you changed the value of one, but the other was not changed, is a page in IE's history. That's what you're stepping back to.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

SAS254-Sep-07 6:19

SAS25

4-Sep-07 6:19

Hi all,

I followed up a response to another discussion with regards to e-commerce shopping cart solutions. My question is regards to using shopping carts in particular the downloading of software or files once payment is recieved notably though an e-mail. This is common with Software companies who allow the purchase of e-products where no shipping occurs.

The solution I require is as follows.

1/ My client requires a web application which allows customers to select from 10 excel sheets to add to basket

2/ Basket functionality should allow for adding/deleting products i.e. these excel sheets

3/ Checkout option which redirects to Secure area of site through the use of SSL Cert will capture payment details which is authorised through payment merchant/gateway

4/ Once payment is authorised redirect to another page for "success order, you will be sent an e-mail with download instructions, blah blah blah"

5/ Online customer receives e-mail with links to the files to download. They are given two chances to download the file then it becomes locked!

6/ E-mail should also generate invoice to customer in image/pdf format which cc to administrator of site also.

7/ Site should also have a history of orders which can be exported for financial system

Question 1 - Does anyone know of an ASP.NET e-commerce solution that can produce these results
Question 2 - Any code snippets or complete solutions that anyone has come across on any websites

Any advice would be greatly appreciated.

All the best,

SAS 25

Re: e-commerce functionality ASP.NET shopping carts

Lucky Sheikh5-Sep-07 0:34

SSO and Debugging on XP Pro - domain issues

5-Sep-07 0:34

hey guy don,t waste ur time this statement
company have many employees n working at different platform
if u want to do
first create a website then link the email to server site
u know when u register ur web email is free it goes automatically to the server side.
database never respond automatically it help form server administrative done this type of work ok
hope u understand
and tell which type of web u want to create i help u if u r interest i m a software engg work as a post of project developer in .net all components

ok byeeeeeee
hope u understand

lucky

davidhart4-Sep-07 6:06

davidhart

4-Sep-07 6:06

I develop on XP Pro. I am setting up SSO (single site login). I want to debug my website and authenticate through the main server running on Win2k3. The main server has a domain full domain (www.sample.com). I can authentiate and redirect to my XP Pro site. However, when I check Request.IsAuthenticated it is false. I believe this is because my host header is localhost on my XP Pro box. I have tried setting my host file to be the same domain as the main server. The host file change has no effect. I have also tried setting the host header in IIS. The host header change causes an error "unable to start debugging on web server. the web server could not find the requested resource". I was wondering if someone has figured this out. If so, please let me know.

Thanks.

how can i show a pdf file in asp.net ?

B.A4-Sep-07 5:52

B.A

4-Sep-07 5:52

hi

i store some pdf file in a folder in my ASP.NET solution.
and now want to insert a link to a page that user click it , show pdf file
how can implement it ?

tanks .

Christian Graus4-Sep-07 6:01

4-Sep-07 6:01

Just link to the PDF, IE will display it.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

B.A4-Sep-07 6:17

B.A

4-Sep-07 6:17

tanks Christian Graus

it is very simple than i think.
but now have a question : i have installed acrobat reader in my computer and now that view a pdf in a browser show correctly.

how about in a machine that has not acrobat reader ? is it show correctly ?

Christian Graus4-Sep-07 6:33

4-Sep-07 6:33

Of course not. It will probably prompt the user to download the reader.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

B.A4-Sep-07 20:31

B.A

4-Sep-07 20:31

tanks so much

Lucky Sheikh5-Sep-07 1:02