NET Control (and retain state after postback mark up) - gist:1536344. ASPxComboBox may lose its selected value after a postback in the following situation: - You have non-unique ValueField values; - You have not defined a correct ASPxComboBox. Net FileUpload After PostBack. DropDownList Postback clears the selected value. Other dropdownlists where new values have been added also reset and lose their new values. The page on_load event loads the default value of each dropdown box. DropDownList lost SelectedItem at PostBack I click on my btnSeach and my selectedindex of dropdown goes to first index always my code is: Based on your description, it seems that you create the DropDownList dynamically, and hope to get the selectedValue on server side. If you're concerned with reloading data over and over, no worries, Kentico. I have been struggling with this for over a week and posted in a few forums - to no avail. The problem here is that, if the the people editor control is disable, and when he clicks the button PeopleEditor is just an empty string. How do I get the default value, <--Choose City--> as selected value again. 5 and have the following problem: My database has to keep track of doctoral students' extra-curricular activities. * The value of the textbox IS NOT lost after postback. The pre-populated values on the page load is missing from the control. It seems like my 2nd DropDown is bounded on every postback even if it's not because of SelectedIndexChanged of my 1st DropDown. Problem: You're using the Html. 1) Checked if the text box has the attribute called “Value” present. The ModalPopup control in the AJAX Control Toolkit offers a simple way to create a modal popup using client-side means. Dropdownlist does not keep value when postback JQuery - Losing Drop down and textbox value on postback Textbox Losing its Value after Postback on Repeater_ItemCommand. If the drop-down list allows multiple selections, the first selected option is returned. I'll cover. Any suggestions. However, here in this article I’ll show you how to implement Ajax Cascading DropDownList in Asp. Download Code or Download PDF. NET Forums on Bytes. If the dynamic Web controls are not added at the correct time in the page's lifecycle, the values entered by the visitor will be lost on postback. This raises a couple issues because we may not know all of the legal values the control can take. Join a community of over 2. Dynamically created controls are lost on PostBack and hence we need to recreate the dynamic controls in the PreInit event of the page. Founds lots of similar problems in forums but can't find anything that works for me. Download Sample App or Download PDF. I want the user to be confirm whether they do indeed want to change the value, which on post back fires a server side event (selectedindexchanged). You want to get the selected value. Load on demand works fine, but when i select an item that's further in the list, the selection is lost after a postback and jumps to the first visible item in the list. To solve the problem with exceptions after change of the drop-down selected item, you need to create controls for old value of the drop-down first and then for the new value in the even handler. I have tried changing some IE settings under Internet Options and even resetting the defaults, but it still doesn't work. Net has provided a feature using which controls like DropDownList, CheckBoxList, RadioButtonList, etc. NET AJAX ComboBox. But it doing postback but I don't want postback. i have added start value "-1" to both dropdown after bindand check in javascript if dropdownlist content is [Select] value"-1" then alert and return falseBut Validation is proper for ddlCountry and for. NET AJAX Ajax. Form except CheckBoxList control. Create dropdownlist dynamically with autopostback property true 2. dropdownlistfor. I am surprised that relatively simpler controls like DropDownList and RadComboBox do not provide the updated values when a form is posted to the server. DropDownList Within Composite Control Is Losing Selected Value On Postback Feb 23, 2010 I am building a composite server control that currently only has a TextBox and a DropDownList. (in the rendered source). (The DropDownList is only populated when the page is not postback) Help please. get or set a value that indicate whether a postback to the server automatically occurs when the user changes the list selection. DropdownList and i am populating it with data, but whenever postback occurs the selected value of the dropdown lost. Text of the textbox that it references on button click (postback) it comes back blank. How to get value from TextBox, RadioButtonList, DropDownList, CheckBox through JavaScript In this article I am going to show how to get value from asp. Introduction In this article we will learn how to maintain the state of dynamically created controls in asp. Load on demand works fine, but when i select an item that's further in the list, the selection is lost after a postback and jumps to the first visible item in the list. NET MVC framework. net 2003 and Visual Studio 2010. Master/Detail Filtering With a DropDownList (VB) 03/31/2010; 7 minutes to read +1; In this article. Finally returning them to the jQuery AJAX function which in turns adds them to the Product dropdownlist. textbox value lost upon postback - ASP. how to retain value of dropdown list after postback which is extended by ajax cascading dropdownlist extendar. Re: Pasting Pivot Table as Values losing Borders and formatting If you select ONLY the table of the pivot you can copy and paste values with the table formatting. ValueType property value. but customer wants to see those values in SM30( TABLE MAINTAINCE GENERATOR) when creating the values in Drop down instead of in a F4. You can find dropdownlist in visual studio's standard controls group. NET AJAX Grid. How to Make a Drop-Down List Change Depending on Selection in a Different List in Microsoft Excel Enter the values you need for the first drop-down list in column A on the new sheet. This property can use viewstate to store its value rather than a member variable that would lose the value over a postback. I wired up an event that handled the postback but couldn't even get the dropdown ID to find the selected value let alone the row. Hi there, Need your help, i am a begginer - working with Java Stuidio Creator. Hi, I want to use a Dropdownlist on a Web User Control (ascx). ProductName. This article will explain you how you can Bind DropDownList In MVC WebGrid and Retrive Value Using Asp. 1) Checked if the text box has the attribute called “Value” present. my problem is i have textbox,button with two dropdownlists, dropdownlists are inside gridview. UserControl values lost on PostBack - ASP. It seems like my 2nd DropDown is bounded on every postback even if it's not because of SelectedIndexChanged of my 1st DropDown. I am building a composite server control that currently only has a TextBox and a DropDownList. Selecting a name from list will do a PostBack to the server and fetch more details about the employee from an SQL Server table. BSP view losing selected value from dropdown list box the information or the structure and field have nothing to do in your code and that´s why you lose the value. Rate this: dropdownlist losing value on postback. net application is to maintain the image on PostBack i. I am surprised that relatively simpler controls like DropDownList and RadComboBox do not provide the updated values when a form is posted to the server. private void CreateDropdownListEmployee(string id,Panel pnl,. Family values and contentment Your speed will fall from 60 to 1 and your car's horsepower will drop down from 250 to 5. Form loads with the correct value in the textbox, and the dropdown optiosn populated, but the selected value is lost. NET Web Service application in Microsoft Visual Studio 2008. Any suggestions. get or set a value that indicate whether a postback to the server automatically occurs when the user changes the list selection. If you are starter then you will be searching for ways to do this. Hai all,I am face the problem with dropdownlist value inside gridview. So I keep the value in a temporary variable before rebind. I need to retain its value in every postabck(. In Focus Saving DropDownList Selected Value Across PostBack in MVC. If the user selects another value in the drop-down, I want the grid rows to reload (via callback), taking the user's selection into account (basically rebuilding the grid with a new DataSet). Using Auto-Postback with CascadingDropDown (C#) 06/02/2008; 2 minutes to read +1; In this article. Load on demand works fine, but when i select an item that's further in the list, the selection is lost after a postback and jumps to the first visible item in the list. The text boxt are populate manualy but the DropDownList are populate dynamicaly from database. keep selected value after postback dropdown list Jun 23, 2011 05:06 AM | lvbasanta | LINK I have many dropdownlist binded to a datasource that is used to save items to a database, everythinng works, but when i save the items to the database i want to keep the last selected value of my dropdown to make more inserts with the same values. Net DropDownList from getting Lost / Cleared / Reset on PostBack when the Submit button is clicked. I have a page that contains some dynamically created controls (TextBox and DropDownList). I have a ASP DropDownList that gets populated on the Page_Load event, after i select an item and hit a button the selected item gets cleared and the first item in the DropDownList gets selected. I had this issue when dynamically populating a drop down box using javascript on a previous user selection. The tag is in the master page. NET partial page postback Published 31/08/2011 When using JQuery to hook up events to your ASP. ddlState is in update panel. how to retain value of dropdown list after postback which is extended by ajax cascading dropdownlist extendar. In above code, I'm checking what the selected value was using LINQ query and then using that value inside SelectList. Master/Detail Filtering With a DropDownList (VB) 03/31/2010; 7 minutes to read +1; In this article. * The value of the textbox IS NOT lost after postback. On Load I'm populating it with values, but upon submit ie. UserControl values lost on PostBack - ASP. Problem with dropdownlist in a webpart You also need to set them on every postback. Problems creating a foreign key in Sql Server: Update or Add Custom Field in JIRA using Atlassian C# API: AutoCompleteExtender bug with Bing Maps. I am surprised that relatively simpler controls like DropDownList and RadComboBox do not provide the updated values when a form is posted to the server. The Scaffolding method. In the above code snippet, first parameter is the name of the DropDownList, second parameter is the collection of SelectListItem to be used as the data source of the DropDownList and third parameter is the default value that will be selected if "Select = true" is not specified in any of the SelectListItem. The problem is that on postback the system only gives me values for combo boxes that were changed by the user. Set Selected Value for DropdownList on Clientside using Javascript May 29, 2010 collecteddotnet 3 Comments Sometimes we need show the dropdownlist control with some selected value after some activity ( without server postback ) on the web page. net webpage code-behind. How to select an item in a DropDownList by value Asp. The SelectedIndexChanged the 1st DropDown is always called on postback and so it throws "populateDdl()" at every PostBack (if a value is selected). If the form validation fails then we have to show again the same form asking for changes in input data and submit again. Creating forms for the web is one of them. When we browse and select an image in FileUpload control and PostBack occurs before final submission then FileUpload control looses its value and we have to again select the image. On Load I'm populating it with values, but upon submit ie. NET DropDownList. I can click the drop down and the list will be there. Dropdownlist selected value lost after postback. NET I have a page menu. However , when I clicked on one of the values in the drop down , the page submitted and reloaded but the script (above) was missing in the new page(). I am setting the DataValueField property of the ddl that I populate at runtime and. Well you should remember that each page is different so while navigating from one page to another the only way you can keep the value is by say storing it in session and in the master page set it to the selected value. NET AJAX Persistence Framework. I've set up the field in the Data Master as a Category with the necessary options and tested the form in isolation to show the drop. How can i preserve the value of the @Html. I'll have to admit, this is one of the only unfortunate nuances that I've come across in the ASP. set { Session["ModificationMode"] = value; }} In the PageLoad, I set it's value. By default behavior of Syncfusion DropDownList, if DataSource is bound from code behind once on rendering the control. NET Forums on Bytes. There are options like using AJAX callbacks on selectedIndex change of dropdownlist but sometimes it is needed that you postback the entire form and render it again. God put eyes in the front of our head, feet pointing forward, and arms that move forward freely. by Scott Mitchell. if i select country from ddlcountry , country related states comes in ddlstates. Now after the Postback, I am losing it's value having a a NullReferenceException. Hi, Im trying to make my own web custom control. by Christian Wenz. Not sure if anyone every had this problem but my custom aspx page loses all the value and text when I hit the asp submit button. August 30, 2014, 4:12am #1. Problem is not able to find the dropdown list's selected values. # re: JQuery Tab: Retain Selected Tab Across Postbacks in ASP. Gets or sets a value indicating whether a postback to the server automatically occurs when the user changes the list selection. NET Control (and retain state after postback mark up) - gist:1536344. The SelectedIndexChanged the 1st DropDown is always called on postback and so it throws "populateDdl()" at every PostBack (if a value is selected). RemoveItemInList() function remove's the Selected ListItem from the DropDownList control. For example if I choose a category "Category1", I get in the dropdownlist" SousCategorie " all sub categories relative to the category1. But it doing postback but I don't want postback. How to Make a Drop-Down List Change Depending on Selection in a Different List in Microsoft Excel Enter the values you need for the first drop-down list in column A on the new sheet. Instead of this you can use CheckBox. The Demo & Download links are. NET Data Grid Control. also , the table structure that displays in the page is non exsistent in the jsp page. Net; DropDownList Values getting cleared after PostBack in ASP. This property can use viewstate to store its value rather than a member variable that would lose the value over a postback. Download Code or Download PDF. Join a community of over 2. NET on 11/5/2013 // Next time submit and Session has values but FileUpload is. Getting the selected value of dropdownlist: At any point in time, only one item in the dropdown list can be selected. In a grid I put a dropdownlist with autopostback=true the items where just static (1,2,3-10). But each postback clears any text field data input or selected. Instead of this you can use CheckBox. Make GridView Work Like DropDownList Where Can Enable Postback? How To Make DropdownList No Postback; Asp. The CascadingDropDown control in the AJAX Control Toolkit extends a DropDownList control so that changes in one DropDownList loads associated values in another DropDownList. NET Web Service application in Microsoft Visual Studio 2008. The SelectedIndexChanged the 1st DropDown is always called on postback and so it throws "populateDdl()" at every PostBack (if a value is selected). Hi, Im trying to make my own web custom control. Retain / maintain / preserve State (values) of dynamically created controls on PostBack in ASP. Hello, Am facing this peculiar problem with a dropdownlist in the Gridview. Well you should remember that each page is different so while navigating from one page to another the only way you can keep the value is by say storing it in session and in the master page set it to the selected value. In Focus Saving DropDownList Selected Value Across PostBack in MVC. Posted by Sharpcnet under ASP. i have added start value "-1" to both dropdown after bindand check in javascript if dropdownlist content is [Select] value"-1" then alert and return falseBut Validation is proper for ddlCountry and for. The CascadingDropDown control in the AJAX Control Toolkit extends a DropDownList control so that changes in one DropDownList loads associated values in another DropDownList. The ASPxDropDownEdit's Text property stores a list containing selected items (that is, values of their Text property), separated by semicolons. Hi, Can you further elaborate your problem? your retain value is for nxt drop down list? how many drop down list you have?. We at times come across a requirement where a feature in a web application is supposed to behave similar to that of its windows counterpart. To solve the problem with exceptions after change of the drop-down selected item, you need to create controls for old value of the drop-down first and then for the new value in the even handler. net - Get The Cascading Dropdownlist To Work In A Gridview Edittemplate Fields? Asp. Here Mudassar Ahmed Khan has provided solution to a problem where the selected value of the jQuery DatePicker TextBox is lost after PostBack in ASP. [Solution]Dropdownlist not retaining selected item on Postback Introduction In this article we will look into an alternative solution to the problem with dropdownlist where selecteditems are not retained on postback. DropDownList helper rendering a drop down list with no value selected. i'm using a code in asp. I also used Updatepanel but after that the action what I want its not happening. Just for a better appearance. The DropDownList control supports strongly typed HTML helpers represented by lambda expressions that have model or template passed into the View. Here is some example code for overriding the render method (in VB and C#) and declaring a potential value for the dropdownlist ddCar. 2199 and am wondering if with the WebDataGrid control, it is possible to persist template column controls and values on postbacks and / or callbacks without having to recreate them each and every time in the Preinit event. Dynamic Controls Lost On Postback. The CascadingDropDown control in the AJAX Control Toolkit extends a DropDownList control so that changes in one DropDownList loads associated values in another DropDownList. This is done by saving the data / class objects / variable in a ViewState object and then fetching it from it whenever needed. This will trigger Page postback every time DropDownList SelectedIndex changes. net - Get The Cascading Dropdownlist To Work In A Gridview Edittemplate Fields? Asp. User re-selects value from dropdown. Dynamically created DropDownList loses selected Item on Postback When click import button, this will displays a first item from dropdownlist only. Because on postback control will be reinitialized and the datasource will not be set if it is bind page load event when postback is false. net projects. In this article we will examine how to add dynamic Web controls to a page in such a manner that you will not need to worry about losing form field values on postback. NET Control (and retain state after postback mark up) - gist:1536344. I lose selected value in ASP dropdownlist after postback when a text box becomes visible after user selection Hello, I am new to ASP 3. Here Mudassar Ahmed Khan has explained with an example, how to prevent the Selected Item Value of ASP. Dropdownlist selected value lost after postback. LockScreenAfterDDLChange(DropDownList, message) - much like LockScreenAfterClick, this method locks the screen after the passed-in DropDownList control has been changed on the client-side. net - DropDownList After Postback All Values/index Lost. The ID of the control, “DropDownList1,” is also passed to the _doPostBack function and stored in the _EVENTTARGET hidden field. Form except CheckBoxList control. how to retain value of dropdown list after postback which is extended by ajax cascading dropdownlist extendar. Of course during a postback the LOAD event does not call the Populate_Dropdown routine but since the INIT now does even during postback, it is working fine again. There have been a few issues. Make GridView Work Like DropDownList Where Can Enable Postback? How To Make DropdownList No Postback; Asp. How to populate a DropDownList based on another DropDownList selected value? Populate Dropdown on the basis of another dropdown value in PHP using Create Multiple Dependent Drop Down Lists. In a grid I put a dropdownlist with autopostback=true the items where just static (1,2,3-10). The dropdown list populates with the relevant values and I am able to select a particluar item from the dropdown list without any postback issues etc, I am also able to grab the selected value when doing a postback or where I have some javascript/ajax function that is trying to workout if the user has selected something. As I noted, since the DropDownList does not provide updated values upon postback of a form, I use the ASP. NET Web Service application in Microsoft Visual Studio 2008. On PostBack however (the ListItemCollections are not re-generated on postback) the ListItems in the dropdownlist contain the. populate a "ReadOnly" text box with another textbox's value onblur (OnTextChanged with codebehind) so that two are in synch, and the "driver" textbox is the "control value" for the read-only textbox. I have a DropDownList that obtains its values from a database. Use Popup To Postback/Update It’s Parent/Opener Without losing ViewState Values And Close JIT (Just In Time) Debugger with Visual Studio. All, I've been banging my head against the wall for hours now, and my co-workers don't have an. This article, by Steve Stchur, looks at how to easily maintain scroll position on postback in ASP. I am populating a dropdownlist based on the selection from another dorpdownlist. it is not a good idea. In a page I have a link; clicking on it opens a dialog and sets a textbox value for that dialog. Hi, Can you further elaborate your problem? your retain value is for nxt drop down list? how many drop down list you have?. One of the elements is a checkboxlist. it is normal that value will gone after postback, store in session or viewstate to retain the value - Se0ng11 Aug 5 '14 at 10:29 use UpdatePanel and put this DropDownList and LinkButton inside it. Each time the selection of one the DropDownList controls changes, the CascadingDropDown makes a call to a specified web service to retrieve the list of values for the next DropDownList in the set. When having a custom control that has some controls in it (e. Not sure if anyone every had this problem but my custom aspx page loses all the value and text when I hit the asp submit button. protected int NumberOfControls { get { return (int)ViewState["NumControls"]; }. I am a believer that user controls should not fetch data, so I am trying to pass data from the page through usercontrol (#1) to a nested usercontrol (#2) to fill a dropdownlist. populate a "ReadOnly" text box with another textbox's value onblur (OnTextChanged with codebehind) so that two are in synch, and the "driver" textbox is the "control value" for the read-only textbox. One simple way to store small values in viewstate is to use a property instead of a member variable. Re: Pasting Pivot Table as Values losing Borders and formatting If you select ONLY the table of the pivot you can copy and paste values with the table formatting. keep selected value after postback dropdown list Jun 23, 2011 05:06 AM | lvbasanta | LINK I have many dropdownlist binded to a datasource that is used to save items to a database, everythinng works, but when i save the items to the database i want to keep the last selected value of my dropdown to make more inserts with the same values. Join a community of over 2. Here Mudassar Ahmed Khan has explained with an example, how to prevent the Selected Item Value of ASP. jQuery is not included at all. I'll cover. 6m developers to have your questions answered on How to persist DropDownList selected index and value on postback from RadGrid FilterTemplate of UI for ASP. NET MVC framework. Net has provided a feature using which controls like DropDownList, CheckBoxList, RadioButtonList, etc. Here is the sample for this. Select the value of asp:DropDownList Selected Item (VB. This article, by Steve Stchur, looks at how to easily maintain scroll position on postback in ASP. Join a community of over 2. How do I access checkboxList selected values after postback if they are rotated? Dynamically loaded checkbox values lost after dropdownlist changed selection. This is done by saving the data / class objects / variable in a ViewState object and then fetching it from it whenever needed. 6m developers to have your questions answered on Dropdownlist get's lost after invalid form submit of Kendo UI for jQuery DropDownList. Net AJAX for SharePoint. Dim column_name As String = column_x. C# - Possible To Re-DataBind A DropDownList Upon Postback Triggered By SelectedIndexChanged Event? Feb 3, 2011. Any suggestions. Use the DropDownList control to create a single-selection drop-down list Gets or sets a value indicating whether a postback to the server automatically occurs. I am populating a dropdownlist based on the selection from another dorpdownlist. To remove the flicker from the page, I placed my drop down list in an update panel, but now it does not postback. And I was able to view the value of domainTypeOid upon initial page load. in oninit you need to add code on the server side that adds the new value to the DropDownList. The Winning Team is on Facebook. This raises a couple issues because we may not know all of the legal values the control can take. DropdownList to preserve the value. 0 Any help would be greatly appreciated. August 30, 2014, 4:12am #1. If the dynamic Web controls are not added at the correct time in the page's lifecycle, the values entered by the visitor will be lost on postback. When RadConfirm is used, the button's click() method is used to initiate the postback if the user confirms the action. keep dropdownlist selected value after postback dropdownlist selected value after. As long as there is no postback happening, I see the list getting populated correctly but after a postback, my dropdownlist is empty. I want the drop down box to be on a different worksheet. After losing starting job, Toronto FC's Alex Bono finally gets a chance to play "Obviously there's shock value to it when it comes and it first hits you," Bono said Monday of his drop down the. The drop down choices are given in SharePoint, so that is where the options are coming from. Is there a workaround for this behaviour? I use netadvantage v2010. In this article I will describe after binding data or values from an XML file to a DropDownList when we will select a particular item in the DropDownList it will display the selected item without any post back to the server. I have a dropdownlist with the autopostback set to true. This article will also help us to deploy the custom field on the server. Set asp:dropdownlist value statically (VB. protected int NumberOfControls { get { return (int)ViewState["NumControls"]; }. and what about a dynamically created requiredfieldvalidator for a dynamically created textbox or dropdownlist in a webUserControl(. Inside an update panel I have two dropdownlists. Using Auto-Postback with CascadingDropDown (VB) 06/02/2008; 2 minutes to read +1; In this article. Retain / maintain / preserve State (values) of dynamically created controls on PostBack in ASP. Hi, Can you further elaborate your problem? your retain value is for nxt drop down list? how many drop down list you have?. I have a DropDownList that obtains its values from a database. Here I will explain how to use jQuery to set dropdownlist selected value or text based on value / text or jQuery set dropdownlist value based on value or text with example. Dynamic Controls Lost On Postback. Answered Active Solved. JQuery breaks after ASP. How to load the dropdownlist box without postback? eg: if you choose country in one dropdown the corresponding states wil fetch in another dropdo. ) The problem might be in the LoadPostData. Selected Index Changed event for asp:DropDownList (VB. The Request object. Join a community of over 2. Controls are losing values on postback Hello I have two dropdowns in a gridview that need cascading functionality but I have experianced problems with the cascading drop down extenders in the past so I have decieded to write my own javascript. UserControl values lost on PostBack - ASP. DropDownList Within Composite Control Is Losing Selected Value On Postback Feb 23, 2010 I am building a composite server control that currently only has a TextBox and a DropDownList. Maintain the dynamic control events, data during postback in asp. This raises a couple issues because we may not know all of the legal values the control can take. Is there a workaround for this behaviour? I use netadvantage v2010. As long as there is no postback happening, I see the list getting populated correctly but after a postback, my dropdownlist is empty. Inside an update panel I have two dropdownlists. Dynamic Controls Lost On Postback. Let's say I have a DropDownList of product categories and a ListView of products based on the category selection in the DropDownList. The dropdownlist is loaded with crmservice. I have dropdownlist in which the items are filled from a data source and autopostback set to true. Any pointers?. Retain the state of dynamic created controls or maintain the data of dynamic created/ added user control on postback in asp. The following sections explain how to get the values on the post back in these controls. I'll have to admit, this is one of the only unfortunate nuances that I've come across in the ASP. So to retrieve the selected values we will use ViewState as shown below. it is not a good idea. Clicking the Add New Button will automatically populate the DropDownList with the newly added ListItem. The Demo & Download links are. Jim_Stanley. get dropdownlist values after postback hello guys im having an issue here, i have a dropdownlist with no items at first but at page load i get the items from database and bind them (object data source), the problem is when ever i made a postback i cant get the selected value how to get it thanks alot. The dropdown list named ShowDetail has two. To remove the flicker from the page, I placed my drop down list in an update panel, but now it does not postback. 3) If the value is there I used jQuery datepicker API option called "setDate" to initialize the datepicker again with the value user entered. User selects a value 4. hello, I want to ask how to keep the value selected in the dropdown list (within a search filter) when I navigate in the pages of the search results (using the pager), because I am losing the filter values on navigation, for example: after filtering products to choose only Laptops, and navigating to the second page of the search results, the products refresh and remove the condition. ixxx but i keep losing my DDL value every time i change from one page to another page. Dynamic TemplateColumns lose modified values on postback - ASP. Two dropdownlists are one is ddlcountry and another one is ddlstates. Is there some other way to have the lists on one sheet, get unique values and sort them, then reference them from a drop down on another worksheet?. This could prevent confusion for the script that handles the form input. Net [Solved] Bootstrap Modal Popup Auto Closes on PostBack in ASP. DropDownList selected value lost on postback This is causing the page to reload which causes the ddl to lose its selected value. dropdownlistfor. Hi, I need to save data in the grid when the user modifies and clicks on an asp button. NET controls, sometimes after a partial page postback, the functionality suddenly stops working. I am setting the DataValueField property of the ddl that I populate at runtime and. Dim column_name As String = column_x. NET controls like DropDown, Gridview etc. How to Make a Drop-Down List Change Depending on Selection in a Different List in Microsoft Excel Enter the values you need for the first drop-down list in column A on the new sheet. Then the control will lose its data binding on any post back actions. Dropdownlist control is the one of the most used controls in asp. Get form data: asp:checkbox, asp:DropDownList, asp:TextBox (VB. It is easy to get posted values after postback by the help of Request. net mvc3 how to keep dropdown list selected item after postback. net 2 anonymous bug delegate foreach interation loops Named Pipes Opener Popup Postback refresh Remote Debug ViewState VIsual Studio __doPostBack. Net FileUpload After PostBack. The problem is when I set the Dropdownlist items manually on postback the items are still their and the onSelectedItemsChange event fires. in oninit you need to add code on the server side that adds the new value to the DropDownList. User selects a value 4.