Retain Dropdown Selected Value After Postback Javascript


NET AJAX Grid. NET Applications Before we proceed, we need to keep in mind one thing. session makes it easy to keep. I have developed a sharepoint custom webpart, in which I have a combobox which includes some values like Mumbai, Chicago, Singapore. after entering first record value in textbox then button click textbox value is. DropDownList selected value lost on postback load as well any javascript function that are related to drop down list? causes the ddl to lose its selected. How can i keep the dropdown value also remain selected after. The problem is to retrieve the choice that is made in the second dropdown. Programmatically Preselect Dropdown Using Javascript. A dropdown list provides a method of selecting only one option from a lots of options while only using up as much space as a single option except while a selection is being made. Active Bootstrap Tab Looses Its Selected Index on PostBack in ASP. I work mostly on intranet stuff so not only I know that JS is enabled, what browser they are using (and what version), even what their default screen resolution is. - To keep the radio button or checkboxes selected, we set a variable with the "checked" attribute for the selected button. The post is receive in the controller but the value selected is empty. when I select something from repeater, an asyc postback it is happen but the scroll is not maintain the position. Use jquery. keep-maintain password textbox value during postback asp. 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. Finally __doPostBack() function invokes the submit. but in my code is iserted exactly after the div. here in second page if we click on "Cancel button" it come back to previous page and maintain the whatever the previous selected value in the drop down list using only "POSTBACKURL". When I select an item from the ddl and select the 'edit' button, it pulls up an additional form to edit the record (based upon Drop Down List in a Datagrid and keeping selected value after postbacks. Javascript Combobox. It is currently setup to do a postback and that works, but even using caching the performance hit is bad. I was trying to collect the seleted value from a dropdownlist which was in the repeater. Maintaining the selected value of a dropdownlist after postback I have these 2 dropdownlists, datalist control on a user control page, the model is that if a value is selected from the first dropdownlist, it uses the value to populate the second dropdownlist control and after selecting a value from the second dropdownlist control, the datalist. New here? Start with our free trials. Through view model. 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. NET MVC framework. Download source code for Several Ways to populate DropDownList Controls. net fileupload control & not the html one. NET AJAX Persistence Framework. NET Forums on Bytes. In this post, I am explaining how to bind 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. 0; How To Bing GridView with Custom Class; passing data from javascript to asp. Using a requests. 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. But on PostBack, the DropDownList controls have lost all the ListItem options not even the SelectedValue! items and since the selected value is based on the. The following sections explain how to get the values on the post back in these controls. Is there anything we could be doing differently to workaround this? Thank you. I've used VB to create a page whereby if a certain value from a ddl is. the problem is that if server-side validation fails, input-values are not manteined. Join a community of over 2. Net,Postback is a mechanism where the page contents are posted to the server due to an occurence of an event in a page control. MVC is doing all the postback through jquery and there is no server transfer of values so the tab value couldn't be stored in a hidden field Jquery - Maintain the selected tab after postback MCV4 Jquery. on page load i am saving dropdown selected value in viewstate here is my code retaining value of dynamic dropdownlist. I have dropdownlist with list of years,i need to check the value selected in the dropdownlist with the previous value selected in javascript code. This method will call automatically when we change the dropdown selected index or value. But if you are using updatepanel in your application and doing asynchronous post back you will find that the events are not binded with the elements nor the initialization Javascript code is executed after each asynchronous postback. Net languages. It's common to spend hours on something trivial, such as displaying a selected value in a DropDownList on postback, or getting that selected value in a controller. The DropDownList control supports strongly typed HTML helpers represented by lambda expressions that have model or template passed into the View. Javascript Combobox. postback, in order to fill the second dropdown according to the value selected in the first dropdown. This article will primarily showcase two techniques of doing so. Net; Active Bootstrap Tab Looses Its Selected Index on PostBack in ASP. In the div with scroll I have a repeater control. Find out when the value changed. TAGs: JavaScript, jQuery, HTML, DropDownList. What it didn’t show was how to capture the selected value in the DropDownlist. how to control the selection tag from autopost back. net using c#, vb. NET DropDownList to Enabled = False. How can I achieve this. getElementById ` drop the window, and forget your form. After edit a row in the grid drop down provider it go to page load and Sync with the grid datasource afterwards the dropdown values gets changed. You can populate the value from viewBag but to keep the value after postback its wise to use Model always. Maintaining the selected value of a dropdownlist after postback I have these 2 dropdownlists, datalist control on a user control page, the model is that if a value is selected from the first dropdownlist, it uses the value to populate the second dropdownlist control and after selecting a value from the second dropdownlist control, the datalist. If the dropdownlist is enabled, the selected value remains the same after a postback. My Page_Load code is nearly identically to Ricks in terms of binding to an object data source. To preserve the selected value after postback, my previous comment will be helpful. # re: jQuery "Auto Post-back" Select/Drop-Down List Good point. >> My code selects a value and then when it returns from postback it should still be their. Larry, As per your suggestion if you run the code and have multiple post back to the same page you end up with duplicate list box items. By using this site, I'd like to maintain the selected value when I get my resulthow do I do that?. net Ajax asyncronus postback probs; Problem retaining values of dropdownlist controls after postback; Postback, session state ETC; Dynamically adding DropDownList - if I set ID. html through javascript. Create a Table in SQL Server. Net; Maintain Selected Bootstrap Menu on MasterPage after PostBack using jQuery in. Javascript Combobox. I want to Retain dropdownlist selected value after postback, I am trying hard to understand how to retain a dropdownlist selected value after postback. There are couple of ways to make your jQuery work after async postback. DropDownList is completely empty after postback. Here Mudassar Ahmed Khan has explained with an example, how to get the selected Text and Value of DropDownList inside SelectedIndexChanged event in ASP. NET AJAX Persistence Framework. In my ASPX file, I have the following additional code:. I'm trying to filter the contents of a dropdown based on the selection in another dropdown, using this MSDN blog post and forum post. while refresh page i need to maintain th. net server ctrl) from clientside jscr; dropdownlist does not retain its selectedindex value on postback. Hello guys in this video we will see how to retain the selected vlue of dropdown even after postback in javascript. In this article, we will see how to pass javascript values on postback and then access these values in your server side code. Introduction: In this article I am going to explain with example How to get DropDownList selected value/item and based on that value fetch the detailed data and show/display in GridView and Label/TextBox controls in asp. Leave Premisssion ="Com OFF">Com OFF when my page use autopostback i lost the selected value from the above dropdown. Doing or Raising Postback using __doPostBack() function from Javascript in Asp. In this process we have to keep our drop down box selected to the option. I have dropdownlist with list of years,i need to check the value selected in the dropdownlist with the previous value selected in javascript code. Function To Get DropDownList Text Value – [JavaScript] Following is the JavaScript code that will return the selected value or text from. I have 2 dropdowns. NET Data Grid Control. Using Auto-Postback with CascadingDropDown (VB) 06/02/2008; 2 minutes to read +1; In this article. net using C#. Maintain Bootstrap Accordion current pane state after PostBack in ASP. aspx that uses a master page. NET web server controls causes postback (Button,Imagebutton). net TextBox after postback event Lalit Raghuvanshi Introduction : In this article i am going to explain with example How to maintain or preserve the password value in the TextBox controls during/on/while/even after the occurrence of post back event in asp. The value was set as well as the number of options. With the help of Telerik support, the final solution was to EnableLoadOnDemand for the Country and City combos, and create an event handler for the OnClientDropDownOpening event of the Country and City combos that finds the value of the parent combo and passes it via. I also used Updatepanel but after that the action what I want its not happening. Hello guys, i'm using bootstarp for tabs, i've tried everything, but nothing seems to work, can someone please help me, this is the code I have so far, i took it from another forum, it work with jquery TAB, but not with bootstarp, can someone make it work for bootstarp or another way to prtevent chaging the app after post back? thanks. Maintain The State Of Checkbox After Postback (Ins Showing data from multiple tables effectively us How To Validate Calender Control in Asp. net webpage code-behind. dropdownlist losing value on postback. Options added to select list with JavaScript lost on postback. setItem("SelItem", selVal); SelItem is a variable in which we are setting the value of selVal. EnableViewState="False" Selected value is not saved. net hiddenfield control to store the selected tab and after postback we can get the last selected tab value from this hiddenfield control and select that tab again. keep-maintain password textbox value during postback asp. # re: jQuery "Auto Post-back" Select/Drop-Down List Good point. First, the values have to be set using sessionStorage. on this function I get selected values from dropdownlist and I save it in local storage:. >> My code selects a value and then when it returns from postback it should still be their. Web Custom Control: getting a updated value on Load event after a postback; which values are sent with a postback? Event Handler doesn't fire immediately upon postback?. Based on the seleted vaue in the dropdown the datafrom webpart is filtered. When the Button is clicked, the Reset JavaScript function is executed. NET AJAX Grid. But when the grid is loaded back with the sorted data, the dropdown selected value is lost and its set to the first value. How to keep DropDownList1 selected value after postback? How to set option: selected in multiple selects; How to stop default scrolling after postback? how to choose selected option in select/option in HTML? How to set selected dropdown option using jquery in a form with multiple selects? Javascript to hide selected option. Three ways to populate selected value in DropDownList on Edit or Update views - MVC Please maintain the naming convention (like I used 'StudentId') so that by. Common Dropdownlist Operation in ASP. I try to save the selctedItem. net Ajax asyncronus postback probs; Problem retaining values of dropdownlist controls after postback; Postback, session state ETC; Dynamically adding DropDownList - if I set ID. by Christian Wenz. For example, when we select a state in States DropDownList, it will populate the City DropDownList based on the state selected for a persona. while refresh page i need to maintain th. The Parameters. Create dropdownlist dynamically with autopostback property true 2. For the purposes of this example we will use. Is PostBack is a property of the Asp. Using Auto-Postback with CascadingDropDown (C#) 06/02/2008; 2 minutes to read +1; In this article. text property has the previous value. Thank you for the update. 6m developers to have your questions answered on SelectedValue lost on postback in dynamically added user controls of UI for ASP. For example: 1) Dropdownyear-2011 Dropdownmodelofthecar-listof cars. JQuery :: Maintain Html Input Value After Postback? Feb 24, 2011. Expected Results: Click the dropdown arrow on the AreaOfRespASPxComboBox to change the search criteria and the list is shown to select another item. Net page so we need some trick to retain the selected tab even after postback. I need some guidance on how to resolve this. But when the grid is loaded back with the sorted data, the dropdown selected value is lost and its set to the first value. The value of the Page. MVC is doing all the postback through jquery and there is no server transfer of values so the tab value couldn't be stored in a hidden field Jquery - Maintain the selected tab after postback MCV4 Jquery. 6m developers to have your questions answered on Selected value is empty after postback of UI for ASP. 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. Description: One of the common annoying problem that developer face while creating Asp. However when i select a new value nothing really happens. If you select a different value it. 2)If i select Dropdownyear-2011 again. I was stuck here. One using Hidden variables and the other using the __doPostBack() javascript method. net hiddenfield control to store the selected tab and after postback we can get the last selected tab value from this hiddenfield control and select that tab again. During PostBack, compete page is reloaded hence all the variables created in JavaScript are lost hence I have shown with an example how you can preserve your JavaScript objects, variables and data without using ViewState across PostBacks. This method will call automatically when we change the dropdown selected index or value. So, The datasource model values changes also be reflected with enable property into dropdownlist. Join a community of over 2. A dropdown list provides a method of selecting only one option from a lots of options while only using up as much space as a single option except while a selection is being made. The CascadingDropDown control in the AJAX Control Toolkit extends a DropDownList control so that changes in one DropDownList loads associated values in another DropDownList. Get dropdown selected value from Code behind. ASPX Page Grid. I am using multiple chosen select and from the controller when I try to open my form in the edit I am not getting value populated in the drop-down field. cshtml) and maintaining dropdownlist state during postback some of them given below - Use viewbag property. SumoSelect is a jquery plugin which beautifully renders a single or multiple HTML select element. But it doing postback but I don't want postback. Net; Maintain Bootstrap Accordion current pane state after PostBack in ASP. How to keep/retain password value in the asp. here in second page if we click on "Cancel button" it come back to previous page and maintain the whatever the previous selected value in the drop down list using only "POSTBACKURL". Three ways to populate selected value in DropDownList on Edit or Update views - MVC Please maintain the naming convention (like I used 'StudentId') so that by. while refresh page i need to maintain th. I can get the dropdown loaded but after postback it is empty. There are two distinct scenarios: The page is loaded for the first time and the dropdown selection is set to some default value, say ‘US’ for the country selection. It looks like, if i select another value from DropDownList, the selected value isn't changed. The problem is to retrieve the choice that is made in the second dropdown. I was stuck here. The list does not drop down and display. Expected Results: Click the dropdown arrow on the AreaOfRespASPxComboBox to change the search criteria and the list is shown to select another item. Here I will explain how to set dropdownlist selected value on page load or code behind in asp. I can't figure out how to keep the option selected once the page has refreshed though. I can reload the dropdown after postback but how do keep the value that was selected? Belos is the code I am using. Download Code or Download PDF. cshtml) and maintaining dropdownlist state during postback some of them given below - Use viewbag property. Dropdownlist Get/Set Value: Get and set drop-down box selected value. Net; Maintain Bootstrap Accordion current pane state after PostBack in ASP. How can i keep the dropdown value also remain selected after. >> Other places in the code it posts back and the one that was selected returns fine Ok. All, I have a datagrid, where I have a drop down list for one column. sir i m creating dropdown dynamically and bindinded it to the database but how to make default value --Select-- and how to remove selected dropdown value from next coming dropdown. Maintain Bootstrap Accordion current pane state after PostBack in ASP. NET MVC Postback - dropdownlist example - Altaf Khatri, Los Angeles - 10/04/2009 Here we can get the dropdownlist selected value by accepting it as part of. dropdownlist losing value on postback. Features: Bind dropdownlist from database data in ASP. Using Auto-Postback with CascadingDropDown (C#) 06/02/2008; 2 minutes to read +1; In this article. In my last blog, I had attached a video that showed how to create a DropDownlist that’s connected to a database. Can any one helpme out in stoping the PostBack. I want to retain the value that was selected in Combo box even after a post back. Net; Maintain Selected Bootstrap Menu on MasterPage after PostBack using jQuery in. Maintain The State Of Checkbox After Postback (Ins Showing data from multiple tables effectively us How To Validate Calender Control in Asp. ex: I selected Drop down list which contains year, if the user selected 2012 as year on post back of page it should be selected as 2012 value, in classic asp. But when the grid is loaded back with the sorted data, the dropdown selected value is lost and its set to the first value. while refresh page i need to maintain th. net dropdownlist using JavaScript onchange event from client-side. There is a lot of ways to bind dropdownlist in asp. 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. When validating a form, to retain the initially filled value in a text box after the submit button has been clicked, we use value="" in the text. Dropdownlist Get/Set Value: Get and set drop-down box selected value. The problem is that the password field which has been filled up before is cleared after postback. The problem is to retrieve the choice that is made in the second dropdown. In this post, I am explaining how to bind dropdownlist in ASP. NET Using Jquery. Also I can not find the div and script in the client side view source code. NET AJAX ComboBox. try to simply do a ` document. However, in Internet Explorer the behavior is different and the selection always goes back to the initial value. Please guide me. In fact only two ASP. Thank you for the update. text or the selectedIndex but always this is set to 1. DropdownList to preserve the value. 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 page so we need some trick to retain the selected tab even after postback. Re: [javascript-l] Retaining Selected Options in Dropdown menu, after clicking submit button Posted by Ram_Kishore (Software Engineer) on Sep 14 at 7:22 AM Mark as helpful HI, After when u submit the data you store in a request or session scope the. 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. I have a website on NET 2. Download source code for Several Ways to populate DropDownList Controls. on this function I get selected values from dropdownlist and I save it in local storage:. My dropdownlist: DropDownList selected value set by jQuery doesn't hold value at postback - jQuery Forum. All, I have a datagrid, where I have a drop down list for one column. SSRS Parameter default value is blank when deployed to server Change CSS class name dynamically using javascript: Setting. Building Cascading DropDownList in ASP. To retain the selected value in the dropdown on refresh, sessionStorage is used to store the value within the user's browser. EnableViewState="False" Selected value is not saved. We can get selected text value from dropdown or asp. Is there a workaround for this behaviour? I use netadvantage v2010. and when the hour dropdown changes i put the selected value into the textbox. net button to post everything to server side (and eventually validate). DropDownList selected value lost on postback load as well any javascript function that are related to drop down list? causes the ddl to lose its selected. NET Using Jquery. Doing or Raising Postback using __doPostBack() function from Javascript in Asp. A dropdown list can contain a range of items. best viewed with JavaScript. i dont understand 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. The dropdownlist is loaded with crmservice calls to the entity on pageload in my asp. keep-maintain password textbox value during postback asp. This method will call automatically when we change the dropdown selected index or value. Active Bootstrap Tab Looses Its Selected Index on PostBack in ASP. However, in Internet Explorer the behavior is different and the selection always goes back to the initial value. You can get the selected values of DropDownListFor control in postback by passing the parameter as a string array in code behind. Postback in classic ASP? This is an existing project, and the way they implemented it before was to post to a 2nd ASP page, run the ASP code to check the value, then redirect back to the 1st page if the value was found to be "already used". Hi, I have a dropdownlist in side a gridview, Onselectedindexchanged I want to some action. As a result, any value that is set on the client side will be lost after the round trip unless it is restored on the server side. Looking for the help. Also I can not find the div and script in the client side view source code. – Debajit Mukhopadhyay Nov 17 '14 at 9:32 I populate dropboxes using ajax method,how can keep values like that. However, the DropDownList control also stores the list of displayed values any of which can be selected and posted back. NET MVC or ASP. Get each value of Dropdownlist in Gridview after Postback So i have here a dropddownlist inside a gridview. Trouble in retaining values of dropdownlist, textboxes, and other controls when dropdownlist selectedindexchanged event is triggered, the controls are inside a user control and this user control inside a parent user control with an update panel. All, I have a datagrid, where I have a drop down list for one column. In web pages while form submission many time we commonly use drop-down list, this post explains how to get / fetch dropdown list selected value. You can't jump into ASP. Yii postback value for dropdownlist. Active Bootstrap Tab Looses Its Selected Index on PostBack in ASP. Download source code for Several Ways to populate DropDownList Controls. Maintaining the selected value of a dropdownlist after postback I have these 2 dropdownlists, datalist control on a user control page, the model is that if a value is selected from the first dropdownlist, it uses the value to populate the second dropdownlist control and after selecting a value from the second dropdownlist control, the datalist. SumoSelect is a jquery plugin which beautifully renders a single or multiple HTML select element. Since the dropdown's items gets cleared after every postback there isn't any new item changed really so it makes sense. By using this site, I'd like to maintain the selected value when I get my resulthow do I do that?. NET AJAX or an You want to flex your ninja skills. 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. Web Custom Control: getting a updated value on Load event after a postback; which values are sent with a postback? Event Handler doesn't fire immediately upon postback?. Get each value of Dropdownlist in Gridview after Postback So i have here a dropddownlist inside a gridview. Here I will explain how to set dropdownlist selected value on page load or code behind in asp. asynchronous post back at selected index change of another dropdownlist. net dropdownlist Invalid postback or callback argument. The problem is that the password field which has been filled up before is cleared after postback. I try to save the selctedItem. For example, both TextBox and DropDownList support event validation, and both have their own ID stored in the validation field. Maintain Selected Bootstrap Menu on MasterPage after PostBack using jQuery in ASP. Hi, I am new to jquery and had a basic question but I couldn't find out how to do this in the API. Leave Premisssion ="Com OFF">Com OFF when my page use autopostback i lost the selected value from the above dropdown. However, the DropDownList control also stores the list of displayed values any of which can be selected and posted back. For example: 1) Dropdownyear-2011 Dropdownmodelofthecar-listof cars. NET AJAX ComboBox. In jQuery we get drop-down list selected by using. Is PostBack property will be set to true when the page is executing after a PostBack and false otherwise. Just get a value from asp:TextBox and asp:DropDownList and save it to sharepoint list item. >> Other places in the code it posts back and the one that was selected returns fine Ok. – Debajit Mukhopadhyay Nov 17 '14 at 9:32 I populate dropboxes using ajax method,how can keep values like that. When I select an item from the ddl and select the 'edit' button, it pulls up an additional form to edit the record (based upon Drop Down List in a Datagrid and keeping selected value after postbacks. Two dropdownlists are one is ddlcountry and another one is ddlstates. Net using C# and VB. Here Mudassar Ahmed Khan has explained how to get selected Text and Value of HTML Select DropDownList in OnChange event using JavaScript and jQuery. text or the selectedIndex but always this is set to 1. I can't figure out how to keep the option selected once the page has refreshed though. Please guide me. I have tried to put the dropdownlist id and selected value. net button to post everything to server side (and eventually validate). net using c#, vb. 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. Jim_Stanley. However, the DropDownList control also stores the list of displayed values any of which can be selected and posted back. In jQuery we get drop-down list selected by using. Maintain selected value during postback. I have created a JSP page and i placed a dropDownList on. net hiddenfield control to store the selected tab and after postback we can get the last selected tab value from this hiddenfield control and select that tab again. I can get the dropdown loaded but after postback it is empty. 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. How to resolve these issues?. 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. All works fine without "DropDownList". ex: I selected Drop down list which contains year, if the user selected 2012 as year on post back of page it should be selected as 2012 value, in classic asp. I need when clicking on second radio button to refresh the page and keep selection on second radio button, I am trying that as below, but it does not work. why and how static variable retain their value after postback form ?. Maintain control Values after PostBack I want to check the selected values of the controls created dynamically, but the problem is that they are lost on post-back. How to keep DropDownList1 selected value after postback? How to set option: selected in multiple selects; How to stop default scrolling after postback? how to choose selected option in select/option in HTML? How to set selected dropdown option using jquery in a form with multiple selects? Javascript to hide selected option. Part of the issue is that you seem to be executing this code on every postback. Its cross device, cross browser all in one solution for complex select related problems. I don't think this is the accual problem anymore though. The CascadingDropDown control in the AJAX Control Toolkit extends a DropDownList control so that changes in one DropDownList loads associated values in another DropDownList. I also used Updatepanel but after that the action what I want its not happening. This article will primarily showcase two techniques of doing so. You can get the selected values of DropDownListFor control in postback by passing the parameter as a string array in code behind. For the purposes of this example we will use. How to retain the css even after postback? If I dont use the update panel then the dropdown collapses everytime i select a value, but the value and style is retained. Download Code or Download PDF. 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. As a result, any value that is set on the client side will be lost after the round trip unless it is restored on the server side. Maintain control Values after PostBack I want to check the selected values of the controls created dynamically, but the problem is that they are lost on post-back. ) don't bind to model values on Postback, but rather get their value directly out of the POST buffer from ModelState. So, I wrapped the gridview that is fed by the dropdownlist in an UpdatePanel, left the dropdownlist outside of the UpdatePanel, and then set up a trigger that causes the UpdatePanel to do a partial page postback. Create dropdownlist dynamically with autopostback property true 2. 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.