ASP.NET

Re: How to stop text_changed event on a particular button click

5-Oct-09 22:44

I let u know about a simple reproducable code.
Drag an asp text box control.
Drag an HTML button control.

Make the autopost back of textbox=TRUE
protected void TextBox2_TextChanged(object sender, EventArgs e)
      {

            Response.Write("hi");
      }

function Button1_onclick() {
alert('clicked button');
}

Run it. Enter any text in text box and click on button. Button will display "hi", it will not trigger its own event. So I want that on button click, TextBox2_TextChanged event should not take place. IN any other condition, it shold work fine.

Christian Graus5-Oct-09 23:48

Re: How to stop text_changed event on a particular button click

5-Oct-09 23:48

amittinku wrote:
Drag an asp text box control.
Drag an HTML button control.

Well, that sucks. Anyone who uses the designer, is obviously on the wrong track. The designer sucks.

amittinku wrote:
So I want that on button click, TextBox2_TextChanged event should not take place. IN any other condition, it shold work fine.

That sounds like a real bug in ASP.NET. I assume you have other buttons, which would still fire the text changed ? It's a real bug if the text change event on the server, stops the client side onclick from working. Perhaps instead of using OnClientClick, you should use onclick directly ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

amittinku6-Oct-09 0:03

Re: How to stop text_changed event on a particular button click

6-Oct-09 0:03

Hi Christian,
You are right. After entering emp id in text box, if i directly click on any button, textchanged event takes place. So could not get any solution yet how to stop textchanged event if we click on a button.

Note:As button is HTML control, so i am using onclick event only.

Christian Graus6-Oct-09 0:19

Re: How to stop text_changed event on a particular button click

6-Oct-09 0:19

So perhaps you need to use an ASP.NET button for it to hook into the ASP.NET events engine properly ?

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

amittinku6-Oct-09 0:20

Re: How to stop text_changed event on a particular button click

6-Oct-09 0:20

whether use asp button or html button, does not matter.

Christian Graus6-Oct-09 1:05

Re: How to stop text_changed event on a particular button click

6-Oct-09 1:05

You're saying that ASP.NET is fundamentally broken. I'd google to see what other people have done, because surely other people have had the same issue.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Arindam Tewary6-Oct-09 7:03

Arindam Tewary

6-Oct-09 7:03

This happens because in asp textbox if AautoPostBack is set to true, page is posted back when user leaves the control ( here textbox). So basically, when you click the button, first you leave the textbox control and then you click on the button. Hence TextBox' postback the data to server and as the page is reloaded you dont see any alert message. Subsequent click on button shows the alert message.

I just replicated your situation.

<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true" ontextchanged="TextBox1_TextChanged"></asp:TextBox>
        <input type="button" id="btnOK" value="OK" onclick="return Button1_onclick();"/>


<script language="javascript" type="text/javascript">
    function Button1_onclick() 
    {
        alert('clicked button');
        return false;
    }
    </script>

Thanks,
Arindam D Tewary

Re: How to stop text_changed event on a particular button click

Christian Graus6-Oct-09 10:08

Re: How to stop text_changed event on a particular button click

6-Oct-09 10:08

Of course, that's what auto postback means. D'Oh! | :doh:

I've never used it, so I didn't really think it through, I just assumed that the event fired when he pushes a button to post back.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

amittinku7-Oct-09 16:57

7-Oct-09 16:57

That I got. But what's the solution?

shared variable

Blikkies5-Oct-09 21:39

5-Oct-09 21:39

Do anyone use shared variable in their ASP projects?

Amit Patel19855-Oct-09 21:44

Amit Patel1985

5-Oct-09 21:44

Hi All,

U can use shared variable if u have requirment.one place u can use i think where u want to display how many user logged in currently in ur website

Thanks and regards

Amit Patel

Blikkies5-Oct-09 21:48

5-Oct-09 21:48

I have found a problem with shared variable, same variable is used if you open two tabs with the same url.

nagendrathecoder5-Oct-09 21:59

Re: shared variable [modified]

5-Oct-09 21:59

Thats right, you'll face this problem.
You can use Session variables in place of Shared. Smile | :)

Blikkies5-Oct-09 22:03

5-Oct-09 22:03

Same problem with session, thats why i use shared.

modified on Tuesday, October 6, 2009 4:10 AM

nagendrathecoder5-Oct-09 22:05

5-Oct-09 22:05

No Way, how are you using them? Sniff | :^)

Can you show your code?

Blikkies5-Oct-09 22:09

5-Oct-09 22:09

shared shouldnt be referenced in both tabs, both tabs should have their own.

nagendrathecoder5-Oct-09 22:13

5-Oct-09 22:13

I don't think this is true. D'Oh! | :doh:

Shared variable is common.
In my beginnings days, i also used Shared variable but then i got same problem. Then i used Session variables which solved my problem.

Basic thing is, for what purpose you are using Shared or Session variables.

Blikkies5-Oct-09 22:23

5-Oct-09 22:23

I used shared variable to store User ID that I reference in different instances. What i understand is that two different tabs runs same class but all variables are initialized, in other words both tabs runs the sam class but variables are not the same.

nagendrathecoder5-Oct-09 22:39

5-Oct-09 22:39

Blikkies wrote:
two different tabs runs same class but all variables are initialized

This is what i am telling you, opening a new tab will initialize all variables but not shared variable, shared variable will retain its previous value. I also used shared variable for storing user ids and i got stuck up.

Try to use Session Variables, assign session variable after successful login, it won't definitely repeat on new tab. Smile | :)

Thanigainathan.S6-Oct-09 3:15

Thanigainathan.S

6-Oct-09 3:15

Its common for the application. So whichever user changes the variable it gets changed.

You can use session variable if needed.

Thanks,
Thani

India is Mythical and so we are

Christian Graus5-Oct-09 23:55

5-Oct-09 23:55

A shared variable will be the same for all users of the website, but will be reset to the default value every time the web server gets reset. As a result, I can't imagine a valid use for one in a website. If I found I had a valid use for one, I would use it, but if I want to persist a value across all pages, I'd use a database, so it doesn't get reset by IIS.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Blikkies6-Oct-09 1:57

6-Oct-09 1:57

I used sharing variable in one of my sites backend, I have a grid that shows delegates with a button in each row that update that delegate details, when the user click on one of the buttons, i set the Sharing Variable equels to that Delegate ID that will be used to update that user, the problem that a faced is when i open two tabs with the same URL, they both reference the same variable that caused data to be override in database causing duplicates. In your previous reply, you said "A shared variable will be the same for all users of the website", does it mean that Shared Variables is used global like Application Variable?

Christian Graus6-Oct-09 10:11