Web Forms :: Check If Radiobutton Has A Selection Before Comparing The Value?
Jun 10, 2010
I have an if/then statement in my code behind that looks what which radio button of a radio button group a user selected and then runs some other code. I'm running into a problem that I hadn't forseen where a user skips the question. (It isn't a required field). So, how do I tell my code behind to first check to see if the user made a selection, and then, if they did, do my if/then...
i am having one test application and in this application i am having 4 radiobuttons and two linkbuttons one is next and one is previous and when i am selecting radiobutton and after clicking next the previous selected radiobutton selection is going i want to maintain the radiobutton selection how to achieve this.
when we select a check boxes creat dynamic check boxes. I have a main catagory check box when we select this main catagory check box creat subcatagory check boxes related to main catagory dynamically.
I use some checkboxes (paid/completed) outside a repeater and 2 radiobuttons (sent/backorder) inside the repeater. I use an update button to update the checkboxes which works fine.
I use below code that reads the radiobutton status on page load.
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How can I add a new radiobutton selection into the update button event?
I want to make a single selection in radiobutton in a gridview. I have added "GroupName" in radiobutton attributes but it only works in column which suppose to have a single selection in the entrire gridview. Another problem is getting the value of the radio button. Selected radio button value must appear in a textbox once it was clicked/checked.
What I am trying to achieve here is as follows. I have a mailing system that works great, I have users from a datasource being looped through and having that message sent to the users that are in that datasource. But my question now is, because I will have multiple queries/datasources (for different users in the mailing system for different purposes), is there a way I can bind a datasource to a radio button and then have that selected radio button be used for the mailing datasource?
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As you can see with this line Dim dt As DataTable = DirectCast((DatasourceOptInMembers.Select(DataSourceSelectArguments.Empty)), DataView).Table I want to have the DatasourceOptInMembers dynamic vs a statically assigned datasource. So baically if another options is selected it will use that datasource instead.It appears simple, although unsure of how to construct this.
I have two strongly Typed partial views (Developers list and Testers list) and the respective views are Developers.ascx and Testers.ascx Now I want to load one partial view based on the radiobutton selected.
How to read the value of the radiobutton option? if anyone can provide Code snippet or some guidelines.
Here is my parent Controller Code & View:
Parent Controller:
[HttpGet] public ActionResult View IT People List(string type) { var developers = from d in itEntity.Developers select s; return View(developers); } Parent View: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Mvc.Master" Inherits="System.Web.Mvc.ViewPage<IEnumerable<DataModel.Developers>>" %> <asp:Content ID="Content2" ContentPlaceHolderID="cphHead" runat="server"> </asp:Content> <asp:Content ID="Content1" ContentPlaceHolderID="cphContent" runat="server"> <h2>View All IT Dept List</h2> <table> <tr> <td><label for="txType">Select List:</label> </td> <td> <%= Html.RadioButton("Type", 1, true)%> Developers <%= Html.RadioButton("Type", 2, false)%> Testers </td> </tr> <tr> <td colspan = 2> <%Html.RenderPartial("Developers", Model);%> </td> </tr> </table> </asp:Content> Two strongly Typed Controllers are: [HttpGet] public ActionResult Developers() { var developers = from d in itEntity.Developers select d; return View(developers); } [HttpGet] public ActionResult Testers() { var testers = from t in itEntity.Testers select t; return View(testers); }
i have radio button list and one textbox in gridview if the value is yes text has to enable otherwise i need disable the text box in grid view how do this?
I have string which came from the database,now i want to compare each charater of the string with the radiobuttonlist value and check box list value and select both radiobutton list and checkboxlist.
Here i write down some code but its just select 2 item of the each radiobuttonlist and checked all checkboxlist.
I have group of radio buttons, each group ranges from 5 - 27 radiobuttons. And if any radio button in a group is checked I store 1 in db else I store 0. Now I'm checking each radiobutton using if loop to see if they are checked and set database value. I'm also trying to use the code below. Is there a good/better approach to check if they are checked or not?Current code:
'rname is radiobutton prefix for a given group 'cnt is number of radiobuttons in the group Private Function RadioIsChecked(ByVal rname As String, ByVal cnt As Integer) As Integer
I have a check box list with some items. I want to make it a single selection. A Radio button list won't work because I need it to allow no selection. It may work if it has allows users to deselect the item selected(like in a check box). The second problem would be that instead of simple text I want a text with link.
The data is populated in the gridview dynamically at runtime The number of rows vary each time The auto postback event has been set to true I need to capture the rows that are selected, When I try to capture the button click event; the gridview is null(I understand that it has to be rebound on each postback). Hence this is not working
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I also tried this, the rowcommand event; It is also not getting generated. The gridview rowcommand is not getting fired
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I need the rows which are selected using the checkbox in the above mentioned sceanrio.
I want a code for disabling the second radio button if i click the first radio button. Only details regarding to first radio buttton should be displayed. The details of second radio button should be invisible.
Note: The answer marked as the answer, answers the questions in the Title. However, my underlying problem, using type ahead dropdowns, is solved by moving to IE8.
I have a drop down list that when I CLICK a NEW selection I want to cause a postback ("this.form.submit()") But only if the click on the dropdown list just changed the selection.
Note that OnChange will NOT work because when the selection is changed by the keyboard I would not want to postback because it is a type ahead dropdown list.
I also suppose I could use OnChange and check if the change was caused by the mouse.
Maybe if we can come up with both solutions and i'll see which works better?
EDIT: More information:
AutoPostback = true; will not work. (don't want it to post back when the selection is changed by the keyboard)
onBlur = doPostBack; I tried this, but the result is not optimal. The user has to click off the ddl after making a selection with the mouse.
Another way to state what I want to do, i think, is do a postback when both the OnChange and OnClick events fire at the same time.
I am currently using DevExpress ASPxGridView and want the selection check box to show a redcross image on selection or empty when unselected. Is there any javascript library to do such a thing. If so can you provide me an example.
The problem is that rblNavigation.SelectedValue is not the value that the user has selected to trigger this event. How do I get the value the user has just selected?I'm using C# and this selection event is inside my MasterPage.
I am having trouble comparing two dates. One is captured from input, other one is predefined. Please see the code below: I enter this date in the textfield: 04-12-2001
Dim idatum As Date If Date.TryParseExact(aankoopdatumIDclm.Text, "dd-mm-yyyy", Nothing, System.Globalization.DateTimeStyles.None, idatum) = False Then 'idatum is true at this point...