ASP.NET

problem in work with javascript

15-Aug-07 13:52

aqzman_ wrote:
I'm not exatly sure what you mean by it isn't used, the SqlDataSource is called in DataSourceID of the dropdownlist. Or maybe I've misunderstood you.

The SqlDataSource is used on the page, but it's not used in the code that you have problems with.

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single minded; short sighted; long gone;

mr.mohsen15-Aug-07 5:57

mr.mohsen

15-Aug-07 5:57

hi dear friend's
how can i change the type property of a textbox from 'text' to 'password' with javascript??
thank you

msma

http://www.comptechdoc.org/independent/web/cgi/javamanual/javapassword.html[^]

leckey15-Aug-07 6:14

leckey

15-Aug-07 6:14

_____________________________________________
Flea Market! It's just like...it's just like...A MINI-MALL!

mr.mohsen15-Aug-07 7:15

mr.mohsen

15-Aug-07 7:15

thank you but i need a code to change the type property of a textbox(html element) from 'text' to 'password'

msma

Guffa15-Aug-07 7:11

15-Aug-07 7:11

mr.mohsen wrote:
how can i change the type property of a textbox from 'text' to 'password' with javascript??

You can't. Once the type has been set for an input element, it can't be changed. You have to create a new element.

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single minded; short sighted; long gone;

problem in work with javascript

ToddHileHoffer15-Aug-07 7:14

ToddHileHoffer

15-Aug-07 7:14

Yeah one option would be to have two textboxes on the page. Then change the Style.Display property to show one or the other which can be done easily with Javascript.

I didn't get any requirements for the signature

mr.mohsen15-Aug-07 5:56

mr.mohsen

15-Aug-07 5:56

hi dear friend's

oh my god
im alone and alone
and nobody close me
no body know me
nobosy love me
nobody like me
but i have u
you like me
u love me
u power me
and u are all of my things...
thank u

WTF?

leckey15-Aug-07 6:11

leckey

15-Aug-07 6:11

Bad poetry certainly does NOT belong in a programming forum.

_____________________________________________
Flea Market! It's just like...it's just like...A MINI-MALL!

Re: WTF?

Steve Echols15-Aug-07 18:23

Steve Echols

15-Aug-07 18:23

He must be a Vogon. Smile | :)

- S
50 cups of coffee and you know it's on!

Dynamic User Control loading: Javascript error on Request.Form[...]

Talal Sultan15-Aug-07 5:44

Talal Sultan

15-Aug-07 5:44

Hi all,

I'm trying to load a user control dynamically into a web form. As I understand it, in order for the Placeholder to have a viewstate, I need to load the control in it before the Page load. So I'm trying to do that in the OnPreLoad method.
I have a link button on the web form. When I click it, I would like to load the user control in the placeholder. The first thing I do is save the UniqueID of the link button in the session. Now in order to be able to check which control has triggered the postback, I match the saved value in the session with the value of this.Request.Form["__EVENTTARGET"]. If they are equal, I go ahead and load the control.

Now the issues I'm having:

First, when the page loads for the first time, I have a javascript error that says
'null' is null or not an object Confused | :confused:

The page continues to work however and when I click the link button, the user control is loaded and is displayed.

Now I have a button in the user control, when I click it, the user control disappears again on postback. I'm guessing this is because the placeholder didn't hold the viewstate as I expected. Would that be due to that Javascript error? The code I'm using is this:

if (this.Request.Form["__EVENTTARGET"] == (string)Session["linkID"])
{
    uc = (UserControl)Page.LoadControl("modules/AddFeatureType.ascx");
    PH_AddFeature_AddType.Controls.Add(uc);
}

where uc is declared globally in the page class.

When I remove this code, no javascript error anymore.

So my questions are: 1-Has anyone encountered a similar javascript problem and if yes, what is causing it exactly? 2-Is OnPreLoad the correct method to place the user control load process to maintain viewstate during postbacks?

Any other insights or issues concerning dynamic user control loading are welcome and appreciated.

Thanks.

-- If this is a post that has been helpful to you, please vote for it. Thank you!

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

Re: Dynamic User Control loading: Javascript error on Request.Form[...]

Talal Sultan15-Aug-07 6:07

Talal Sultan

15-Aug-07 6:07

Ok I found the problem. In the beginning I was loading the user control statically in the web form and then when I wanted to try to load it dynamically, I commented the line where I call it.

<td>
<asp:PlaceHolder ID="PH_AddFeature_AddType" runat="server"></asp:PlaceHolder>

</td>

This resulted in the comment tags to appear in the html code, I have no idea why actually. Anyway, I removed the comment completely and now the page loads without javascript errors and when i click the button in the user control, the required field validator of my textbox works.

Now I have another issue related to the field validators, I'm not sure if I should created a new thread for it or not.

In that same page with the user control, I have 1 textbox in the webform and 1 textbox in the user control, both have required field validators attached to them. I also have two buttons, one in the web form and one in the user control.

My problem is that when i click the button inside the user control, the field validator of the textbox located in the web form activates. My question: is there a way to have some kind of scope for the button? I would like only the field validator of the user control to activate when i click the button inside the user control. Is there a way to accomplish such a thing?

Thanks.

Talal

-- If this is a post that has been helpful to you, please vote for it. Thank you!

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
--Rich Cook

ASP.Net page displayed on a PDA problem

bobh052615-Aug-07 5:38

bobh0526

15-Aug-07 5:38

Hi all,

I have an ASP.Net 2.0 application that my customers use. I now have the need to allow my customers to connect via their PDAs. Just one ASP.Net page is involved here. This page has a Gridview control and the user can enter some info which updates a SQL table. The gridview has some textboxes where the user can change some values. Pretty standard stuff. So I made the gridview real small so that it will fit on a PDA. Everything works except that my textboxes are very wide. I tried making the width small but no luck. But other properties like font=bold, font-size, forecolor, etc. I can change and these change do appear on the PDA. But everything I try to make the width small fails. It is very frustrating since this will perfectly if I can just get these darn widths correct! I know there is a mobile framework and special controls just for mobile devices. But that would require me to write a new web page and learn about these new controls. I was hoping I could salvage my existing web page. Can anyone help?

Thanks,
Bob

Inheritance in web controls

Dermot O S15-Aug-07 3:42

Dermot O S

15-Aug-07 3:42

hi,
Is it Possible to create a base web control and then inherit from it in other user web controls?
For example, id like to create a web control that encapsulates all the ajax logic, a title bar, some buttons etc. Then id like to create some sub controls that would inherit from that, so that i could create, for example a gridview control, and it would be ajax enabled and have a title bar etc...
I cant see any way to do this in visual studio (2005). When i create a control, i cant set that as the superclass for another control, ie: inherit from it.

Ive been programming for several years, but never worked on a web project large enough to think about something like this. If its not possible, what are the general ways people encapsulate common functionality in web controls on the web? Confused | :confused:

Thanks

Guffa15-Aug-07 3:48

15-Aug-07 3:48

Dermot O S wrote:
When i create a control, i cant set that as the superclass for another control, ie: inherit from it.

Yes, you can.

What have you tried that led you to believe that you can't?

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single minded; short sighted; long gone;

Dermot O S15-Aug-07 4:07

Dermot O S

15-Aug-07 4:07

Well, In a web project, I create a control and call it BaseControl.ascx I put some text into it eg: "This is the base control".

I then create another control and call it MyControl.ascx. I modify the code-behind to inherit from BaseControl instead of System.Web.UI.UserControl and in the markup i change the Inherits= value to BaseControl.

I attempt to build it and i get 5 errors

I get 4 x
Error 1 'Context' is not a member of 'BaseControl'. C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\sitetwo\51cc156d\f50c0ac4\App_Web_ms78fiky.0.vb 37

and one:

Error 3 property 'SupportAutoEvents' cannot be declared 'Overrides' because it does not override a property in a base class. C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\sitetwo\51cc156d\f50c0ac4\App_Web_ms78fiky.0.vb 68

When I double click the errors it brings me into that randomly named, auto generated file: App_Web_ms78fiky.0.vb

Am I doing this wrong? Thanks for your previous quick reply by the way.

Paddy Boyd15-Aug-07 4:37

Paddy Boyd

15-Aug-07 4:37

I don't think you need to change the inherits= value in the markup...

Guffa15-Aug-07 8:16

15-Aug-07 8:16

Paddy is right. The Inherits property determines what class the ascx page is inheriting from, and you don't want to change that, as that would turn the ascx page from a "MyContol" to a "BaseControl".

---
single minded; short sighted; long gone;