Web Forms :: Validating For Mutually Exclusive Form Elements?

Aug 9, 2010

I need to validate that a user makes a selection from a select list OR they enter text into a textbox. I'm trying to figure out which validator to use. Is there a way to make a CompareValidator do this? Or would I need to write a custom validator? If custom, do I write one for each of the form elements, or does the validation happen upon submit?

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Web Forms :: Mutually Exclusive DropDownList Pair

Dec 4, 2013

I have two databound dropdown list controls...on a data entry form.

The catch is that i want the user to select only one....

I thought that a dropdownlist behaves like a combobox in winforms.....only to find that there is always a selected item...

And asp.net has no native combobox control...

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Web Forms :: Validate Mutually Exclusive Text Boxes?

Aug 26, 2010

Meaning only one of them can have a value, but not both.

I suspect one validation control can't handle both.

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Web Forms :: Make RadioButtons Mutually Exclusive - If One Is Selected Other Must Be Unselected

Jun 27, 2012

I have 2 radio button in my page. Now I can click both of them i want when i select  Radionbutton1  then Radiobutton2 be deselect i mean  i can just click on one of radiobutton ....

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Forms Data Controls :: Checkboxlist Control: Mutually Exclusive Selection Of ALL?

Feb 11, 2011

I have a checkboxlist control showing Q1,Q2,Q3,and Q4 and with AppendDataBoundItems="True" I added:-

<asp:ListItem Value="*">ALL</asp:ListItem>

I want when people select All, the checkboxes for Q1, Q2, Q3, and Q4 are cleared and the "All" box remain checked. How to do it ?

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Forms Data Controls :: Radio Buttons Are Not Mutually Exclusive When Used In A Repeater (or ListView)

Feb 15, 2011

"Radio Buttons Are Not Mutually Exclusive When Used in a Repeater" according to KB #316495 http://support.microsoft.com/kb/316495. This bug also exists with ListViews, and I am having a hard time developing a workaround. Is there a solution or workaround available? I'm using Visual Studio 2010.

(Here is my ASPX. I want rbGroupedSession and rbFees to be mutually exclusive. Databinding and setting controls visible attribute to true/false is done in the code-behind. I'm also setting the RadioButtons "GroupName" property correctly in the code-behind, but it gets changed when rendered in the browser -- which is bug KB #316495)..


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Data Controls :: Select One Checkbox From Multiple Checkbox Columns Of Grid (mutually Exclusive)

Aug 12, 2013

I have 5 checkbox columns in my grid .. like

Id      Chk1   Chk2    Chk3   Chk4  Chk5

I want select only one checkbox among 5 checkboxes if user selects one checkbox another which are checked are need to uncheck. How can i do this in client side .....

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Load Dynamic List Of Elements AFTER FINISHED Loading Of Several Form Elements?

Mar 1, 2010

I have...a dynamic populated select box several input boxes a submit button form fields are loaded initially using cookies several dynamic populated divs

I want... start loading the content of my DIVs after all FORM elements have been loaded completely (= filled with data, select boxes are populated)

Sample code:


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Web Forms :: Validating With A Custom Html Form?

Jan 7, 2010

I have a custom html form, I created new asp.net site in the web developer 2008.

My question is, When i create a validating for this textbox and run the page, it tells me error, i tried to make the validating control id and (control to) same as name and id of my textbox but all didn't not work out?

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Web Forms :: Non-validating Button Will Not Postback Invalid Form?

Nov 10, 2010

(Using ASP.Net 2.0 on Visual Studio 2005, coding in C#)I write in the hope that someone will be able to provide a clue as to how I might best overcome this issue:I've got a form with 2 RequiredFieldValidators, and 2 buttons. Button 1 has 'CausesValidation' set to 'False', and populates some of the other fields on the form from the database (via a postback).Button 2 fires the validation, then if the form is valid brings a javascript popup confirmation box and then, if true, it puts the data in the form into an email.All this is working fine. However......My problem is this: If I press button 2 with my required field(s) empty, the form quite correctly refuses to submit, and highlights the appropriate field(s) with a red *.But: if I then press button 1 (my populating button) it DOES NOT FIRE until I press it a second time!Code snippet follows (markup only - I will of course post code-behind if nec. but I don't think it is)

<script type="text/javascript">
function ConfirmSubmit()


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Web Forms :: Modifying ASP Form Elements With Javascript?

Mar 3, 2011

I'd like to change some properties of ASP Form Elements via Javascript and I am having a very difficult time doing so. The element is defined as:


But Im not having any luck modifying it with Javascript like this:[Code]....

one thing I noticed is that (At least in VS2010 intellisense) the elemtn doesn't seem to have a disabled attribute like a standard HTML


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Web Forms :: Request A Form Elements From External Webpage?

Jul 22, 2010

there are a form in a page like this :


how we can request that form dynamically and make it in my webform ?

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Web Forms :: Disabling Form Elements Until Page Is Rendered Completely

Jul 20, 2013

How to Disabling the form elements until the page is rendered completely.

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Validating Form In Sharepoint?

Sep 23, 2010

I developed a screen in which there are fields like first name,username,password and email. I validated these fields using javascript and came to know that javascript is not that safe. So i decided to validate on server side also. My question is whether i can use asp controls like requiredfieldvalidator, regularexpression validator to validate the form or i have to validate through server side coding??

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MVC :: Validating Form Values Before Insert?

Sep 21, 2010

Before committing the record from the postback of the Create or Edit method in my controller, I validate the values in the form against some business rules in the GetRuleViloations() of this domain object. The following rule example is written in two ways. The 1st one validates against the numeric values in form, the 2nd one validates using the associated object (lookup table in database) description via the foreign key. I would like to use the 2nd method, but during the Create postback the associated object is always null.


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Validating That A Form Input Is Not Empty?

Jul 28, 2010

I have this code for Form Submit..

<input type="submit" runat="server" id="buttonSubmit" value="Add" style="width:100px;" />

My BeginForm is like this..
<% using (Html.BeginForm("Insert", "StudentController", FormMethod.Post, new { @id = "exc-" }))

I have one textbox in my view I need to check my textbox is empty or not if it is Empty display alert box saying please Enter some value in textbox other wise go to controler..

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Web Forms :: Force C# To Not Rename Input Elements To Work Consistently With Form.GetValues?

Jan 6, 2010

HOW TO Force C#/ASP.NET to not rename input elements to work consistantly with Form.GetValues.

ASP.NET changes the "name" property of input elements set with "runat=server" to match their ID property at run time. This causes server-side calls to HttpRequest_Page.Form.GetValues to now be able to get the expected Form element.


.aspx page...

<input type=text id=txtMY_NAME name="MY-NAME" runat=server>
<input type=hidden id=hidMY_SECRET name="MY-SECRET" runat=server>

.aspx.cs file:

string csNAME = HttpRequest_Page.Form.GetValues("MY-NAME"); // Fails...
string csSECRET = HttpRequest_Page.Form.GetValues("MY-SECRET"); // Fails...

The reason why this fails is because ASP.NET changes the "name" properties of these controls to match their "ID". Thus at run time they become as such:

.aspx at run-time

<input type=text id=txtMY_NAME name="txtMY_NAME" runat=server>
<input type=hidden id=hidMY_SECRET name="hidMY_SECRET" runat=server>

I do not want ASP.NET doing this. I do not want to change the naming convention of my id properties either. In fact, I need the ID to be different than the name, as I use client side script to change/create/delete controls on the fly.

What can one do?

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C# - How To Use Multiple Form Elements In MVC

Feb 21, 2011

So I am new to ASP.NET MVC and I would like to create a view with a text box for each item in a collection. How do I do this, and how do I capture the information when it POSTs back? I have used forms and form elements to build static forms for a model, but never dynamically generated form elements based on a variable size collection.

I want to do something like this in mvc 3:


How do I do a text box for each guest? And how do I capture them in the action method that it posts back to?

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MVC :: Iterating Through Form Elements With Same Name?

Mar 21, 2011

Currently, I have a list of PhoneNumber objects that I display. Here's an example of the output of the view:


Notice the naming of these elements: name="existing_phone[labels][6]", name="existing_phone[numbers][6], name="new_phone[labels][]", name="new_phone[numbers][].Back in the Classic ASP days, I recall being able to do something along the lines of:


And that would give me a 2d array of phone numbers to work with. This doesn't seem to work in .NET. Has anyone tried to do something similar that can point me in the right direction?For new phones, I should simply be able to iterate through each item and insert into the database. For existing phones, I should be able to update (or delete if the label or number are blank) records based off of the id number supplied in the array.OR..if anyone has a better, alternate solution, I'm open to something else.

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Creating Images From Form Elements?

Feb 21, 2011

I have a form with a bunch of labels and images on it. Is there a way I can capture parts of that form into an images file (jpg/bmp, etc)? Ideally I could specify the x-y coordinates, and save that to a jpg.

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Whole Elements Are Wrapped Inside A Form?

Nov 17, 2010

As you know froms could lead to accessbility issues and unlike PHP when I was dealing with it, everything in ASP.NET we can say is wrapped inside a form. As you know not every elements is a form element and from accessbility point of view the screen readers have what is called 'forms mode' which only interact with form elements. Can anyone calrify why is that in ASP.NET?

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Access Elements Of A Form In Another .cs File?

Dec 15, 2010

I have a xaml page. I can access all its controls in xaml.cs. Is there anyway I can access the controls of the xaml page in a different .cs class file?

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.NET MVC : Ignore Latter Route Elements In Url For A Form's Action

Mar 2, 2010

I have a URL /products/search where Products is the controller and Search is the action. This url contains a search form whose action attribute is (and should always be) /products/search eg;

<%using( Html.BeginForm( "search", "products", FormMethod.Post))

This works ok until I introduce paging in the search results. For example if I search for "t" I get a paged list. So on page 2 my url looks like this :


It shows page 2 of the result set for the search "t". The problem is that the form action is now also /products/search/t/2. I want the form to always post to /products/search.

My routes are :routes.MapRoute( "Products search",
new { controller = "Products", action = "Search", query = "", page = 1 });
routes.MapRoute( "Default",
new { controller = "Home", action = "Index", id = "" });

How can I force Html.BeginForm(), or more specifically Url.Action( "Search", "Products"), to ignore the /query/page in the url?

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C# - Encrypt The Names Of Http Form Elements?

Mar 15, 2010

I have a form with certain elements, input boxes, check boxes etc. I need to encrypt the names of these input boxes and check boxes. I'm currently using a Rijndael encryption/decryption method through c# however this is making the encrypted names too long to be passed in a post. Is there a better way to get decent encrypted names? my purpose is to have the names encrypted before the post happens so if someone views the code behind the names are already encrypted.

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AJAX :: Populate All Generated Form Elements Using AutoCompleteExtender?

Sep 30, 2010

Is it possible to populate all generated form elements using AutoCompleteExtender? Now i have one textbox called Userid when i put some number it is listing the list of IDs from the database using AutoCompleteExtender. I need to make, if selected ID correct, other Form Field should fill with relevant data. Currently i am filling it with TextChange event for the UserID field, but it is reloading the whole page. So Is there anyway can be filled all Form Elements using AutoCompleteExtender?

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