FORM values on post back
okay... another dumb nubie question here... I am building a form with three dropdown controls to drill down through category, sub-category and product. I have each set to post back so that when the user selects the main category the sub-category should be populated based on the value of the main control. The controls (or at least the first one) are binding to a WebService class. But or some crazy reason I can't seem to access the value of the main category to supply it to the sub category WebService. However the selected value of the main category is mai...Form DropDownList not posting back
I made this form with a DropDown box. It refreshes the page when you select an item, but it doesn't post back the information. I can't figure out why. The Request.Form("cboFilter") never gives me anything but an empty string. Why is this?Okay here's my code in the form runat=server part:<asp:DropDownList ID = "cboFilter" runat = "server" AutoPostBack = "true"></asp:DropDownList>
Then here's my code-behind:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim fi...Dropdownlist not posting back selected values.
My data base looks like this. My dropdownlist has the vacancy_num as the DataTextField and description as DataValueField. If I select a vacancy_num and do a post back to place the 'description' name as a label using the DataValueField for the value, The vacancy_num ALWAYS selects the first vacancy_num in the sequence.
Example: I choose B1000/2. Postback returns B1000/1. I choose B4000/3, postback returns B4000/1. Why does it not keep the value I selected?? I have noticed that if I replace the DataValueField to point to the vacancy_num it works fine. But then I don't have a descri...Value of DropDownList without post back
I have a DropDownList populated by an ArrayList (manually filled). I want to capture the SelectedIndex value of the DropDownList at form submission. All attmepts have left me with the first value of the list, and not the selected item.
Is it not possible to get this value to change without the _OnSelectedIndexChange event on postback?
A common cause of this is re-binding the dropdown in PageLoad on every postback. That causes the user's selection to be overlayed before the page processing cycle reaches the point where your postback events are processed.
Check "If Not Is...Prevent browser refreshes from posting back an already-posted-back form?
HiI have a formview in insert mode for inserting items into a gridview. Each item is some description text, a price, and a quantity. I'm using SqlDataSource controls while I learn about the New Way of Doing Things.If I insert an item, and then refresh the now-posted-back page in my browser, the same item gets inserted again. I would like to prevent this, ideally without response.redirecting on FormView.ItemInserted every time a new item is inserted. I don't think it'd be a question of clearing the inputs and validating for data, would it? I mean, an F5 will repo...Does AJAX Post all form data back to server?
Hi allRecently, I am studying Asp.net AJAX and find one question. Please see below code excerpt:<form id="form1" runat="server"> Maxium: <asp:TextBox runat=server ID=maxValue Text=2500 /> <br /> <ajaxToolkit:ToolkitScriptManager ID="ScriptManager1" runat="server" /> Result: <asp:UpdatePanel runat =server ID="ResultPanel"> &nb...DropDownList and CheckBoxList not holding value during post back
Hi, I have a dropdownlist (and a CBL) that is not holding it's selectedIndex value when the page is posted back. I've looked for answers and have seen and tried many things such as setting autoPostBack/enableViewState/etc. But, nothing is working.... Any ideas? I've also read that certain controls do not by default post their values back if they are within an HTML table that is within a HTML form. As I know, all of my asp.net server controls are within the aspnetform form on the rendered page and both of these server controls are within a table. ...where is the value saved of the form controls(such as textbox) in post backs?
I have some puzzle in view state.I have just read an article in Msdn about view state.http://msdn2.microsoft.com/en-us/library/ms972976.aspx,It says, there are many stages in the life cycle of the page,and the Stage 2 is Load View State,the Stage 3 is Load Postback Data.In Stage 2 ,it says : During this stage, the view state data that had been saved from the previous page visit is loaded and recursively populated into the control hierarchy of the Page. And the Stage 3 is Load Postback data of the form controls,
My first question is: what is the difference of the view stat...Trouble getting selected value from DropDownList when posted back
I have a DropDownList inside a Repeater with AutoPostBack=True. I need to get the selectedvalue of the DropDownList so that I can populate another DropDownList based on its value. I was trying to do this in the Page_Load method but the value is coming back as null. Here's what I was trying. What am I doing wrong?
Thanks <asp:DropDownList ID="OfficeDDL" runat="server" AutoPostBack="true" /><br /> if (Page.IsPostBack)
DropDownList OfficeDDL = (DropDownList)EmployeeOfficeAddressRepeater.FindControl...AJAX modalpopup to post data back to web form
I have a form with a button on it. When the button is clicked, an ajax modalpopup is displayed and the user can then input some data into a text field and click another button that will query a database and return with a gridview of information pulled from the database. In the code behind I have the gridview_selectedIndexChanging set up to catch the index of the selected row and then pull the data from the cells into hidden text fields all within the popup. The OK button is tied to some code behind that should transfer the values in the hidden text fields to...After post back insert row in datagrid from form values
I am looking for the best control to allow the insert of row or rows based on form values from post back. This must be old but after two hours of search, I cannot find simple example of inserting row into datagrid without calling ds from db. DataGrid can not be editable and is few columns of simple strings. On postback I want to add new row to data grid while preserving row that is there. Using a session datatable is not an option as I do not want the table to expire with time. Thanks for any assistance in finding an example of this (what must be typic...Posting Values Form to Form Same App
I am attempting to understand how to pass form field values to another page's form field values. I can set up the Get values, Server.Transfer and discover the values that have been passed, but my problem is setting these values to the receiving page server side controls (textboxes in this case).
Any help in understanding this is appreciated.
Here's a simplified source:
Has Two Fields on a form
After validating, redirect to second page
Has Two fields on a form
Reads...How to maintain form controls value after user control post back?
hello experts, I have created filter grid in asp.net & C#.My form design has contains 3 dropdown controls and Filter grid(User control).Its working fine(filter), but one problem arise.the form controls are clear when i filter a grid(post back).I tried to reterive values using view state, hidden controls, i got only null values.Anyone please help, its urgent to me. Its my user control code.FilterGrid.aspx<%@ Control Language="C#" AutoEventWireup="true" CodeFile="FilterGrid.ascx.cs" Inherits="FilterGrid" %><style type = "text/css&...How to Pass data to pop up form, allow user to add new value, pass new value back to form to do Insert
Instead of opening window to ente...