Web Forms :: Onselectedindexchange Event Without Autopostback?
Oct 6, 2010
I have a nut for a manager who changed my form and added _top so that I could redirect a response to a parent window, anyway, I have two .net forms and now he tells me I can't do any posting back on my child window. I have lots of .Net event callbacks that use autopostback on this child window. He told me he believes I can do all the necessary event code through his Javascript client-side scripting that he loves so dearly. I don't think he knows .NET very well even though he acts like he does. the microsoft server coding world and without replacing every object in my child window (there are many) with html and resorting to an html page (God help me Bill Gates I'm coming to get you) is there anyway I can have my events (onselectedindexchanged onclick ... ie) to call javascript functions without an autopostback on any of my controls ?
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Sep 7, 2010
I have dropdownlist that located inside a repeater, how can i get OnSelectedIndexChange event of this dropdownlist? i want to use this event to set TextBox value olso inside this repeater, i try this code
[Code]....
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Aug 3, 2010
I want to show a window , when user select value from drop down list.I am to use animation Extender for that.Do we have onSelectedIndexChange or Onchange events for Animation Extender?
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Jan 8, 2011
I am having a problem with dropdownlist auto post back set to true...
In my project I have to hide and display two other dropdown lists depends on selected index change of a main dropdown..
I set the auto postback to true and I am hiding and displaying the dropdowns on user selection...Everthing is working fine..
But I am having a very hard time when user types when the dropdown got focus..this is very annoying situation..if type one word its doing a postback and they are unable to type further...
is there any way to fire this onselectedindex change event on blur or on enter key press...is there a way of doing it with java script or jquery...
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Mar 29, 2010
I am using an asp.net autopostback enabled dropdown list. Here i want to restrict the autopostback property fot the value "Select" in the ddl. I have used javascript for this purpose. but not working.My code look like this.
[Code]....
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Dec 13, 2010
i have set autopostback property for text box . will it fire when java script desable at client side
<asp:TextBox ID="Slider1" runat="server" OnTextChanged="Slider1_TextChanged" AutoPostBack="True" >
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Jul 27, 2010
I am still a beginner, so pardom me. I have this stage problem which i am having a difficult time to solve. I have two link buttons and a gridview. In my gridview, I have a select system used for my OnSelectedIndexChanged. Now when the select in the gridview is clicked on, it populates certain into in a textbo xand it is also changes the name of my linkbutton to update. The problem I am having is based on the fact, after the name of my linkbutton is changed, one of my linkbutton gets repositioned as well. So instead of having this stillLinkbutton1 Linkbutton2I get this insteadLinkbutton1Linkbutton2
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Mar 25, 2010
I have an update panel which contains a number of controls. The update panel is triggered by the OnSelectedIndexChanged event of a dropdownlist called: ddlUSCitizenshipStatus. It works as expected when I selected a new item.
However, if I leave ddlUSCitizenshipStatus with the default value, and then click "submit" button on the page, the requiredfieldvalidators say there is an error on ddlUSCitizenshipStatus (which it should, as I never selected a value). So I then choose a value, the error message goes away on ddlUSCitizenshipStatus, however the updatepanel does not refresh. I've debugged this locally and the OnSelectedIndexChanged event for ddlUSCitizenshipStatus does not fire.
If I choose an item in the ddlUSCitizenshipStatus list a second time, the OnSelectedIndexChanged server event fires and the update panel refreshes and works as expected.The issue is, I have to select an item in ddlUSCitizenshipStatus twice, after failed validation, before the updatepanel it's sitting in updates.The submit button on the page looks like this:
[Code]....
If I remove my custom OnClientClick script, making the submit button look like this:
[Code]....
The dropdownlist, update panel, and reguiredfieldvalidator all work as expected. However, I need to run that custom "ValidatePage()" script when the button is clicked.Below is what my ValidatePage script looks like. I've been troubleshooting this for more hours than I can count.... I hope someone is able to help me. Please let me know if you can figure out why ddlUSCitizenshipStatus doesn't update the updatepanel until the second click after a failed validation.
[Code]....
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Jun 8, 2010
I have 2 textboxes and a submit button inside a .net composite server control. I tried to only postback when submit button is clicked. I set autopostback = false for both textboxes. But either one still trigger submit button's onclick event by hitting "Enter" inside textbox. How can I stop postback by enter key?
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May 3, 2010
i duno why, when i put a autopostback in my drop downlist, after the postback, my content HTML editor and the flash button all disappear.
i have put the enable view state = true. but it still happen.
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Feb 23, 2011
I am an asp.net newbie and encountered problem with postback. I have created a web form and put some web controls and set their AutoPostBack property to True.
Some of the controls are listbox, checkbox. However, the SelectedIndexChanged and OnCheckChanged do not fire automatically when an item is selected from the listbox for example or when the checkbox is checked. I noticed that the commands I put in the SelectedIndexChanged and OnCheckChanged is only fired when a button is clicked.
e.g. The code below that sets the text of a label is being fired only when a button is clicked even if the autopostback property of the listbox is set to TRUE.
protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
ListItem myItem = ListBox1.SelectedItem;
Label1.Text = myItem.Text;
}
Again, I would like the Label's text to change when an item is selected from the listbox and not only when a button is clicked.
What else could I be missing to make autopostback work?
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Jun 26, 2010
I have a gridview with checkboxes going down the side for each item. Some are enabled and others are not. At the top of the page is a checkbox which when checked will make all the checkboxes on the side enabled. THis is not working and I have tried 2 variations. What am I doing wrong?
[Code]....
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Feb 4, 2010
I have 5 textboxes in aspx page, and their AutoPostBack property is True. When I write something to first textbox and press tab key to write something to second textbox, the second textbox don't be focused. I have to select second textbox with mouse to write something it. I want to focus the second textbox by pressing tab key after write something to first textbox. HOW Can I do this?
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May 14, 2010
When a user clicks a control that has autopostback=true, the screen refreshes and scrolls back to the top of the page. Is there a way to avoid this and have the page stay in the position it's in?
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Jan 7, 2011
Is there a way to have a textbox autopostback when the 5th character is entered into the textbox?
I have a zipcode textbox that I would like to fire an autopostback as soon as the 5th character is entered. Currently I have it so it will fire when tabbed out of or when the next textbox is clicked in but it would save one step for the customer if it fires on the fifth character.
[Code]....
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Jan 19, 2011
I have a webform with multiple input textboxes. each box is used in computing somethings, and i am doing these calculations within the TextChanged event for each textbox...this way after the user enters each entry, all calculations requiring that data is performed. I have also set EnableViewState="true" and AutoPostBack="true" cause I am trying to have the textbox keep their data displaying on AutoPostBack. The form is not behaving the way I want it to...right now, if a user inputs data in one field and switches focus to the next, the previous box losses it's data. Is there a way i can get this behaving the right way? I basically just want all the controls to keep their data on AutoPostback.
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Mar 2, 2011
What is autopostback? Please explain me with a small example with client/Server.
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Sep 14, 2010
I have a checkbox with autopostback property. I just want to ask because everytime I check the box It appears on the upper part of the page. How can I make it without changing its location when I check the box.
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Jun 29, 2010
I have a checkboxlist with autopostback set to true, the checkbox list inside a panel and together they are inside an update panel.
when I first check one item everything is fine but when I try to check another one a javascrip error fires.
"Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Specified argument was out of the range of valid values. "
this is my code:
[Code]....
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Apr 27, 2016
When I select the item in 1st dropdownlist, values are fetched from database and want to display in second dropdownlist... but the autopostback is not working for the 1st dropdownlist..
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Feb 23, 2011
I have a webform that the user inputs a date via a javascript popup calander, then it auto populates a textbox with 45 days after the inputed date.
My question is is there a way to have a postback once the input date loses focus. Here is my page.
ASPX
[Code]....
C#
[Code]....
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Feb 2, 2011
I have controls and some has AutoPostBack set to true.
i.e
<asp:CheckBoxList ID="cblTest" runat="server" AutoPostBack="true"
OnSelectedIndexChanged="cblTest_SelectedIndexChanged" >
</asp:CheckBoxList>
How can I capture which control has triggered the autopostback event when it runs again in the Page_Load method.
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Jun 21, 2010
How to give a label Autopostback abilty
what i tried is lblarr.Attributes.Add("AutoPostBack","AutoPostBack");
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Mar 22, 2011
I've got a server control that renders out a series of dropdownlist and a checkbox that all have autopostback set to true. When the control renders the onchange event binding is not written out!
Controls are defined as protected, named and added to the controls collection in OnInit, and rendered via RenderControl(writer). Page.requiresPostback is also set.
ANy ideas why this might be? I'm scratching my head.
/* chopped version of the code in question */
[Code]....
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Nov 28, 2010
I have on site three textbox controls, RequiredFieldValidator with each textbox and button (without any code). I have problem, when I set autopostback property of textbox controls to true. Regardless, that EnableClientScript sets to true or false, validation error dissapears - or show only few seconds. Helps only set CausesValidation property of textbox to true. And my question - if autopostback is set to true, should I set causesvalidation to true too to make proper validation process? Why it doesn't work?
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