Dropdownlist Losing Value On Postback


How to force a postback on a value change of a dropDownList. 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 Parameters. I'll cover the following topics in the code samples below: DropDownListPage, EventArgs, ArrayList, Class, and Ajax Asynchronous Javascript. net MVC, C#. The TextBox used along with the jQuery DatePicker is set as ReadOnly and hence it does not retain the value set on Client Side using jQuery DatePicker. 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. How to get DropDownList selected item without postback in asp. But when I enter values in them and get a postback the values are gone. In addition to selecting items within the dropdown list, this demo allows end-users to select items by entering semicolon-separated series of an item text into the ASPxDropDownEdit edit box. Dropdownlist selected value lost after postback. In this article I will discuss more about handling dropdownlist in the postback of the ASP. Minimal working example is below:. NET Forums on Bytes. For example, storing an Integer in viewstate can be accomplished like this: VB. com :: Ajax HTMLEditorExtender losing value on postback. Selecting a name from list will do a PostBack to the server and fetch more details about the employee from an SQL Server table. NET DropDownLost loses values on PostBack. dropdownlistfor. My problem is when you click on search button after you have selected a region and a category there is a post-back and the value selected are lost after this post back. Solution walkthrough. Jim_Stanley. how to retain value of dropdown list after postback which is extended by ajax cascading dropdownlist extendar. 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 browser only sends back the selected value to the server. We have confirmed this (unable to obtain the “id” of the selected item during postback) as bug and a defect report has been logged for this. I'll cover the following topics in the code samples below: DropDownListPage, EventArgs, ArrayList, Class, and Ajax Asynchronous Javascript. if i select country from ddlcountry , country related states comes in ddlstates. Ive made a control with 2 textboxes and 1 dropdownlist. Also, I have a dropdownlist "SouCategorie" which is filled from a list "Sous categorie". Most often, the key field name in the database has the 'integer' type, so I suggest you set ValueType to "System. I'll cover. 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. I tried to reload the page from the onchange event of the first drop down but this loses the selected value. Here is some example code for overriding the render method (in VB and C#) and declaring a potential value for the dropdownlist ddCar. Here is the code with the control that I am trying to run a postback with; the id. 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. Retain / maintain / preserve State (values) of dynamically created controls on PostBack in ASP. net c# example code demonstrate us how can we get the DropDownList web server control's Selected item while DropDownList AutoPostBack property set to false. In the article I will going to address those two questions. Join a community of over 2. ProductName. by Scott Mitchell. net dropdownlist control. * The value of the textbox IS NOT lost after postback. The ModalPopup control in the AJAX Control Toolkit offers a simple way to create a modal popup using client-side means. NET AJAX Ajax. net 2003 and Visual Studio 2010. Is there a workaround for this behaviour? I use netadvantage v2010. Selected Index Changed event for asp:DropDownList (VB. Programming Languages I have a webgrid with dropdownlist and onchange it postback the page. We need a DropDownList control for our demo. I came across with this problem , when i call the textbox from code and take its Text property the value is "" nothing, i thought hmmmmm weird , what is happening , why…. DropdownList to preserve the value. With the custom RadWindow dialog the client-side API of both controls is used to handle the events of all needed controls. If you don't want to do a postback on adding every and each hobby, you can either: - use a session variable to store the edited user's state and add the hobbies with an ajax call - use a multiselect listbox instead of dropdowns. UserControl values lost on PostBack - ASP. After the great custom drop-down list styles made by Hugo in his tutorial Custom Drop-Down List Styling, we wanted to make it simple to create a custom structure from a normal select input (without multiple option selection). How can i preserve the value of the @Html. if i select country from ddlcountry , country related states comes in ddlstates. Download Code or Download PDF. (PROBLEM) 6. Is there a workaround for this behaviour? I use netadvantage v2010. Inside page load event i first checked whether it is postback, if yes then i am setting the value attribute of textbox with the value of password textbox. The page on_load event loads the default value of each dropdown box. hi, How can I make dropdownlist no postback - I have a dropdownlist which I put a code in selected indexchanged -basically for every indexchanged the code will connect to sql and get values then populate textboxes with values. Dropdownlist control is the one of the most used controls in asp. But when I enter values in them and get a postback the values are gone. Postbacks are commonly seen in edit forms, where the user introduces information in a form, hits "save" or "submit", causing a postback. Another postback occurs, the value is picked up and written to XML, no more problems. postback the DropDownList box is losing the values. I am not sure I understand what you mean. Datatable Reload Without Postback. selectedvalue properties in my coding, which are both very important. The page on_load event loads the default value of each dropdown box. 0 Any help would be greatly appreciated. I can click the drop down and the list will be there. Rate this: dropdownlist losing value on postback. This article will explain you how you can Bind DropDownList In MVC WebGrid and Retrive Value Using Asp. DropDownList web control and place it inside the phControlHolder lose the values that the user has. Steve's solution involves the addition of a simple server control in the Web Form, a technique that works in a myriad of browsers. 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. Join a community of over 2. Make GridView Work Like DropDownList Where Can Enable Postback? How To Make DropdownList No Postback; Asp. net with c# which dynamically generates 6 textboxes, 2 dropdownlist box and 2 buttons. To remove the flicker from the page, I placed my drop down list in an update panel, but now it does not postback. I recently ran into the altogether common problem of the Html. The CascadingDropDownList extender, which comes with the AjaxControlToolkit library, is designed to work with a web service. Any suggestions. 0 Any help would be greatly appreciated. The dropdownlist "SousCategorie" is filled from the dropdownlist "Categorie". Been struggling with this for many hours. 3) If the value is there I used jQuery datepicker API option called "setDate" to initialize the datepicker again with the value user entered. The dropdownlist is loaded with crmservice calls to the entity on pageload in my asp. How can i preserve the value of the @Html. The amount of columns returned are based on a user's selection critiera from the page. 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. When click in any tab and click in any autopostback control, the DropDownList in ftab are load again and lost the selected value. 0 To reproduce using the code below, press button 1. AutoPostBack property allows controls which cannot submit the Form (PostBack) on their own and hence ASP. Gets or sets a value indicating whether a postback to the server automatically occurs when the user changes the list selection. Here Mudassar Ahmed Khan has explained how to use ViewState with dynamic controls i. 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. Now, DropDownList will look at the provided default selected value and displays it. Hi, I have a dropdownlist in side a gridview, Onselectedindexchanged I want to some action. 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. We have confirmed this (unable to obtain the “id” of the selected item during postback) as bug and a defect report has been logged for this. For saving the edited values in the grid, there is another button called "Save" on the same page. Dropdownlist control allows user to select only single item at a time. I can reload the dropdown after postback but how do keep the value that was selected? Belos is the code I am using. We have confirmed this (unable to obtain the "id" of the selected item during postback) as bug and a defect report has been logged for this. By using jQuery map functions we can set dropdownlist selected value based on value or text. if javascript adds a new value, when the postback is processed on the server, the server side DropDownList has no matching item to select. In a page I have a link; clicking on it opens a dialog and sets a textbox value for that dialog. NET I have a page menu. NET Forums on Bytes. Event validation checks the incoming values in a POST to ensure the values are known, good values. And I was able to view the value of domainTypeOid upon initial page load. and what about a dynamically created requiredfieldvalidator for a dynamically created textbox or dropdownlist in a webUserControl(. I'll cover. In above code, I’m checking what the selected value was using LINQ query and then using that value inside SelectList. In above code, I'm checking what the selected value was using LINQ query and then using that value inside SelectList. I am populating a dropdownlist based on the selection from another dorpdownlist. Introduction In this article we will learn how to maintain the state of dynamically created controls in asp. Dynamically created controls are lost on PostBack and hence we need to recreate the dynamic controls in the PreInit event of the page. Join a community of over 2. But i want to maintain whatever password i have entered in the textbox across postback. Hi guys On tweeter template I changed the template to keep the searchbox on all pages. hi, How can I make dropdownlist no postback - I have a dropdownlist which I put a code in selected indexchanged -basically for every indexchanged the code will connect to sql and get values then populate textboxes with values. 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. 6m developers to have your questions answered on Dynamically created combo box losing value after multiple postbacks of UI for ASP. if javascript adds a new value, when the postback is processed on the server, the server side DropDownList has no matching item to select. August 30, 2014, 4:12am #1. The control may sometimes work correctly 5 or 6 times in a row, but the 7th time it seems to lose the selected item value, and the text entered in the textbox. and what about a dynamically created requiredfieldvalidator for a dynamically created textbox or dropdownlist in a webUserControl(. DropDownList web control and place it inside the phControlHolder lose the values that the user has. PostBack is the name given to the process of submitting an ASP. net using c#. [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. When I select a value in the dropdownlist I get a postback and the value I selected is selected even after the postback. *When the drop down list value changes and the postback occurs the data that I had. I had this issue when dynamically populating a drop down box using javascript on a previous user selection. Dynamically created controls are lost on PostBack and hence we need to recreate the dynamic controls in the PreInit event of the page. Dim column_name As String = column_x. This article will also help us to deploy the custom field on the server. DropDownList Postback clears the selected value. But in the postBack the selected values cannot be retrieved. I tried to reload the page from the onchange event of the first drop down but this loses the selected value. The problem is that on postback the system only gives me values for combo boxes that were changed by the user. 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. For saving the edited values in the grid, there is another button called "Save" on the same page. Add value to asp:DropDownList dynamically (VB. I need to retain its value in every postabck(. If you are starter then you will be searching for ways to do this. got many similar pages that work, but this page is losing the selection each time I submit the form, and I don't know why. i'm using a code in asp. Reset DropDownList selected value on PostBack using jQuery. 3) If the value is there I used jQuery datepicker API option called “setDate” to initialize the datepicker again with the value user entered. We have confirmed this (unable to obtain the “id” of the selected item during postback) as bug and a defect report has been logged for this. The dropdownlist is loaded with crmservice calls to the entity on pageload in my asp. 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. Say this is my GridView bound to a SqlDataSource that get’s the products details. private void CreateDropdownListEmployee(string id,Panel pnl,. net application. 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. The effect is more or less the same. I have a DropDownList that obtains its values from a database. Finally returning them to the jQuery AJAX function which in turns adds them to the Product dropdownlist. 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. Join a community of over 2. In my previous article I had discussed How to bind IList with MVC dropdownlist. 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. NET MVC, postback is handled differently then how it is handled in ASP. I am working with VS 2010, in Windows7, on IIS7. When I click on submit button, it register a blank value in my database. 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 ListItem class saves just its Text and Value property values in ViewState - it simply neglects its Attributes collection. I found that the key value had several blank spaces before the actual value. in oninit you need to add code on the server side that adds the new value to the DropDownList. Just for a better appearance. This property can use viewstate to store its value rather than a member variable that would lose the value over a postback. In this article I am going to discuss how to postback a form on ASP. 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. NET AJAX Persistence Framework. August 30, 2014, 4:12am #1. Following is my Contro, ID #3816411. I need to retain its value in every postabck(. Net Ajax to develop this custom field. NET Control (and retain state after postback mark up) - gist:1536344. 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. DropDownList in Templated Control losing Items value on postback I'm using a DropDownList control in a Templated Control. Due to this I wants to rebind this control again, that time it lose the selected value. 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 filte. 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. NET AJAX Grid. 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. Inside page load event i first checked whether it is postback, if yes then i am setting the value attribute of textbox with the value of password textbox. hi, How can I make dropdownlist no postback - I have a dropdownlist which I put a code in selected indexchanged -basically for every indexchanged the code will connect to sql and get values then populate textboxes with values. NET AJAX Persistence Framework. Finally returning them to the jQuery AJAX function which in turns adds them to the Product dropdownlist. 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 Ajax to develop this custom field. I am getting the drop down but I am not able to see the F4 values in drop down. I don't know how this is happening, but a dropdown control I have is resetting to the 2nd value on the list anytime a postback occurs. the value of the ID will change on every postback. This will trigger Page postback every time DropDownList SelectedIndex changes. 5 and have the following problem: My database has to keep track of doctoral students' extra-curricular activities. How to get a drop down list with the selected value across the Post back. Here is the sample for this. Creating forms for the web is one of them. Hi, Im trying to make my own web custom control. Jim_Stanley. Can any one helpme out in stoping the PostBack. 5 and have the following problem: My database has to keep track of doctoral students' extra-curricular activities. but I want to fill the listbox from an xml file. But, currently our Dropdownlist control behavior is, during the postback, the value in the Dropdownlist textbox alone is obtained. Unfortunately, on my home PC that has Windows 7 and IE 8 installed, the drop-down menus just do not work (they do on my office PC that has XP Professional and IE 7). Skip to main content. So, we’ve come up with this little plugin that will allow some custom styling of the drop-down list. The dropdownlist "SousCategorie" is filled from the dropdownlist "Categorie". If, say, the script was programmed to only accept capital letters, then a drop-down menu would secure that no invalid entries were made. Use Popup To Postback/Update It’s Parent/Opener Without losing ViewState Values And Close JIT (Just In Time) Debugger with Visual Studio. Due to this I wants to rebind this control again, that time it lose the selected value. losing attributes on postback; adding a value to Session object; Adding an additional option to a bound dropdown list; Adding dropdownlist to a datalist; moving items from one list box to another; Removing Items From A preloaded Dropdown list Please help; Dynamically adding DropDownList - if I set ID also, I lose PostBack EventHandler. In this article we will try to bind child Dropdown on selection change of parent Dropdown, say Country to State or Sate to City, by using jQuery which will call an action in controller and return JSON for selected id, and with the help of jQuery append values to child. I have a HTMLEditorExtender on my page and when I try to access the. Disabled checkbox loses value on postback Ext. Other dropdownlists where new values have been added also reset and lose their new values. There are cases in which you may want to trigger postback/ajax request to the server when the user clicks a grid data row anywhere (not only when hitting a button/checkbox/other control in the row). when i m using the hiddenfield in the master pageit says it doesnt not exit in the page behind of the menu. On further analysis I noticed that while populating the dropdownlist, user is passing an empty string to “value” property of dropdownlist. Net; DropDownList Values getting cleared after PostBack in ASP. If you are starter then you will be searching for ways to do this. 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. In this article I am going to discuss how to postback a form on 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. selectedindex or. 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. How to select an item in a DropDownList by value Asp. Return Value: A String, representing the value of the value attribute of an element in the drop-down list. 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). Who knew eight practices could feel so thorough? Because while we've only seen the Carolina Panthers take the field a week's worth of training camp, including at Fan Fest on Friday night in. I am looping through the products and creating select options from them i. NET controls, sometimes after a partial page postback, the functionality suddenly stops working. Like described in the title, i' trying to use a dropdownlist for post back page. How do I save value in gridview after postback without using database. In the gridview, I got a dropdown list for each line that pre-selects an option depending on the DB value for that. Maintain selected value during postback. Just for a better appearance. Retaining drop down list box value of a form after posting From a drop down list box or combo box visitor selects one option and submits the form. 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. Problem in gridview in link button:Invalid postback or callback argument coming based on the value selected in the first dropdown list. By using jQuery map functions we can set dropdownlist selected value based on value or text. and what about a dynamically created requiredfieldvalidator for a dynamically created textbox or dropdownlist in a webUserControl(. On Load I'm populating it with values, but upon submit ie. dropdownlist ClearSelection() method clears out the list selection and set the selected property of all items to false. Dropdownlist control is the one of the most used controls in asp. This is why when extending, say, the CheckBoxList (as we did in ListControl Items and Attributes) to support item-level attributes the extended control does not remember the attribute values - the ListItem isn't saving it!. You want to get the selected value. I also used Updatepanel but after that the action what I want its not happening. protected int NumberOfControls { get { return (int)ViewState["NumControls"]; }. The drop down will have a list of Employee names. I need to retain its value in every postabck(. So, I see that the issue is present when assigning a value to the textbox through client-side code but not when its value is set through server-side code. Unfortunately, on my home PC that has Windows 7 and IE 8 installed, the drop-down menus just do not work (they do on my office PC that has XP Professional and IE 7). Download Sample App or Download PDF. How to create a dynamic dropdown list in Excel and how to edit or delete a drop down box. 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. The DropDownList will not retain it's values when a Postback is done (caused by a submit button being pressed), and I cannot use the. Any pointers?. Hi, I want to use a Dropdownlist on a Web User Control (ascx). AddItemInList() function adds a new ListItem into the DropDownList based from the values entered from the TextBox Control. Join a community of over 2. View 4 Replies Similar Messages: Losing Textbox Value On Postback? Jun 9, 2010. Let's say I have a DropDownList of product categories and a ListView of products based on the category selection in the DropDownList. How to get a drop down list with the selected value across the Post back. the value of the ID will change on every postback. Dropdownlist will render on page at runtime without value being populated. Thus on many occasions we need to preserve the state and values of such properties across PostBack. Net; DropDownList Values getting cleared after PostBack in ASP. keep the value of a dropdown after postback. For example if I choose a category "Category1", I get in the dropdownlist" SousCategorie " all sub categories relative to the category1. If you're concerned with reloading data over and over, no worries, Kentico. 2) If the attribute is present I checked if it has some value which the user entered/selected before postback. 0 TextBox Ready Only losing client side changes, values across postback? Well, this has been under discussion for sometime and I knew this was a known issue although it was a design change in ASP. The dropdownlist is loaded with crmservice. 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. AutoPostBack property allows controls which cannot submit the Form (PostBack) on their own and hence ASP. I tried to reload the page from the onchange event of the first drop down but this loses the selected value. 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. Enable/Disable ASP. Selecting a name from list will do a PostBack to the server and fetch more details about the employee from an SQL Server table. The CascadingDropDownList extender, which comes with the AjaxControlToolkit library, is designed to work with a web service. 6m developers to have your questions answered on RadAjaxManager losing drop down list value after Ajax postback of UI for ASP. Net FileUpload After PostBack. A postback is an HTTP POST to the same page that the form is on. 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. you could look in the form collection for the value. when i m using the hiddenfield in the master pageit says it doesnt not exit in the page behind of the menu. i'm using a code in asp. Net C# without creating a web service. Here Mudassar Ahmed Khan has explained with an example, how to prevent the Selected Item Value of ASP. And there is no code in my html page or code behind where I clear the value of Hidden1. Net DropDownList will be referenced using JavaScript or jQuery on Client Side and then its SelectedIndexChanged event will be called by making use of the __doPostBack JavaScript function. How to force a postback on a value change of a dropDownList. I'm using the SELECT [ Variable, Attribute ] syntax. Dynamically created controls are lost on PostBack and hence we need to recreate the dynamic controls in the PreInit event of the page. However, here in this article I’ll show you how to implement Ajax Cascading DropDownList 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 dropdownlist's selected item's index change. Founds lots of similar problems in forums but can't find anything that works for me. DropDownList is not retaining selected index on PostBack I am going to try and map my flow out and explain as best as possible. To remove the flicker from the page, I placed my drop down list in an update panel, but now it does not postback. Here Mudassar Ahmed Khan has explained how to use ViewState with dynamic controls i. Disabled checkbox loses value on postback Ext. Can any one helpme out in stoping the PostBack. 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. Recent posts by Ankit Bhatt. How to get DropDownList selected item without postback in asp. In a page I have a link; clicking on it opens a dialog and sets a textbox value for that dialog. It seems like my 2nd DropDown is bounded on every postback even if it's not because of SelectedIndexChanged of my 1st DropDown. [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. This works fine, but now the users want another drop down box to be added and filled with different options depending on what they pick from the first drop down box. We have confirmed this (unable to obtain the “id” of the selected item during postback) as bug and a defect report has been logged for this. 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. How do I save value in gridview after postback without using database. The ID of the control, “DropDownList1,” is also passed to the _doPostBack function and stored in the _EVENTTARGET hidden field. 0 To reproduce using the code below, press button 1. In this article we will try to bind child Dropdown on selection change of parent Dropdown, say Country to State or Sate to City, by using jQuery which will call an action in controller and return JSON for selected id, and with the help of jQuery append values to child. I am working on ASP. To remove the flicker from the page, I placed my drop down list in an update panel, but now it does not postback. Two dropdownlists are one is ddlcountry and another one is ddlstates. On clicking save button, the page is getting posted back and gridview values are getting cleared, due to which i am not able to save the latest data. users to select an item. 3) If the value is there I used jQuery datepicker API option called "setDate" to initialize the datepicker again with the value user entered. net using c#. Please help me. 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. I had this issue when dynamically populating a drop down box using javascript on a previous user selection. I am populating a dropdownlist based on the selection from another dorpdownlist. NET MVC I have a dropdown list with places, that are available on the selected time span. This is a major problem when editing data as by default, the first value is selected and saving would mean the first value is used. Form except CheckBoxList control. if javascript adds a new value, when the postback is processed on the server, the server side DropDownList has no matching item to select. In a normal ASP. 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.