Can Manually Scroll Up To Top Of Page To See Required Field
Jan 14, 2010
I've currently got a RequiredFieldValidator added to the top 3 fields of each generated set of questions. The questions are dynamic, and what I'd love to do is pop up a red "YOU MISSED SOME FIELDS...blah blah" msg above the Submit button when the user misses those top fields. (I did do this previously with a custom validator, but I've had trouble doing this w/the dynamic fields that I've created.)Right now, if you miss a top-3 field, the page just does nothing, and the user has to manually scroll up to the top of the page to see "required field" pop up in red next to the missed field.
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Feb 17, 2011
I have required field validators in my ASP.NET application form.
In the button click event of the FORM, i.e. OnClientClick(), I am calling a javascript function to validate the controls in this same page. Due to this the required field validators are not getting fired.
I need both the javascript function be fired on the button click , as well as required field validators also to work efficiently.
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Jan 11, 2010
I need to add a Required Field Validator to a text box on my page. When I add the validator the following happens when I run the page:
When I click the submit button the page doesn't submit because the page is invalid. No error message displays despite my having set the ErronMessage. When I click inside the text box that has the Validation, then the Required error message shows. When that textbox loses focus the error message goes away. The only way I can get the page to function correctly is if I create 2 Validators for the same text box. The first validator is set to have an ErrorMessage of "" and the second one is a regular error message.
I have used these before many upon many times and never experienced this. Below you will find the Source code.
[Code]....
This code is the only way I am able to get the validation to function correctly where the ErrorMessage displays when I leave the field blank. I appreciate any help on resolving this issue. I have deleted/re-added the validation control many times. This is the only page this type of error happens on.
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Jul 15, 2010
I have created a form with several textboxes and a dropdown list and assigned a required field validator to each of them. I also have a master page with several links to other pages, some made using <a href=..> and some linkbuttons. The problem I am having is that when I click the linkbutton links they do not redirect to the proper page, rather they trigger the validators for all textbox fields and display the validator characters next to each textbox (and the dropdown). When I fill out the form, those links redirect properly. The links created using <a href=..> do not cause this problem.
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Oct 5, 2010
How can we use required field validator on User Control in aspx page*strong text*
I have one user control that have one drop down. I am using this control on my page. I want to use required field validator on this drop down.
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Nov 25, 2010
Can a required field validator be called from the code behind page?We have several check boxes and some of them require the user to enter a date, but not all of them.(This is not a checkbox list, but individual checkboxes).Any 1 of 6 different checkboxes selected makes a txtBox visible for users to enter a date.If they don't select one of these checkBoxes which require a date - it doesn't matter, the form will still be valid.I don't think validation groups can work here so looking towards doing through .vbHere's the existing code:
Public
Sub chkBoxI_CheckedChanged(ByVal sender
As
[code]...
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Mar 17, 2014
How can I validate the page using this javascript on Asp Button Control.
function PrintPanel() {
var panel = document.getElementById("<%=pnlContents.ClientID %>");
var printWindow = window.open('', '', 'height=700,width=1000');
printWindow.document.write('<html><head><title>Trainee Appraisal Form</title>');
printWindow.document.write('</head><body >');
printWindow.document.write(panel.innerHTML);
printWindow.document.write('</body></html>');
printWindow.document.close();
setTimeout(function () {
printWindow.print();
}, 500);
return false;
}
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Print Only"
OnClientClick = "return PrintPanel();" />
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Apr 1, 2011
I have a DetailsView on the page and I have made one of the fields a TemplateField. In the EditItemTemplate and InsertItemTemplate I have a DropdownList that is databound to a table in my Sql Server database. I wanted to add an initial value to the DropdownList
namely "- select -" .
I set the AppendDataBoundItems property to true and added the initial value as a ListItem.Markup of the DropdownList
<asp:DropDownList ID="DropDownList_HP" runat="server"
AppendDataBoundItems="True" DataSourceID="SqlDataSource_HP" [code]...
This works fine for new input. The problem is however that the database already has records that were entered through a Windows Application and many of these records has a null value in this field and exceptions are thrown when I tried to open these records
and the system tried to set the SelectedValue of the DropdownList.After some more searching I found this help
http://msdn.microsoft.com/en-us/library/ms366709.aspx
So I changed the ListItem in the DropDownList markup to the following:
<asp:DropDownList ID="DropDownList_RefHospDV4" runat="server"
AppendDataBoundItems="True" DataSourceID="SqlDataSource_RefHosp" [code]...
This now solved the problem of opening a record where the value is null in the database, BUT now the RequiredFieldValidator is not validating anymore to make sure that a databound item is selected for this field and not the initial value "- select -". So basically now it is not checking anymore to see if valid input has been entered for the DropDownList and it accepts "- select -" thus it acts as if the field is not a required field anymore.
In short what is required is that I want to make sure that the user enters a valid selection in the DropDownList, but it must also cater for old records that do not have this field entered yet so that those old records can be opened in the DetailsView .Opening Old records (with null in that field):When these old records are opened in the DetailsView the DropDownlist should show "- select -" when the value in the database is null.
Saving records (old or new records):When saving the record in Insert mode or Update mode the RequiredFieldValidator should show that a valid input is not selected if the DropDownList is still on "- select -".
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Feb 3, 2010
I have a aspx page with a ascx control inside an ascx control and the required field validator is not hit on the action of the page.
The issue is with the 2nd nested ascx control. The field validators in the first ascx control validate correctly, but with the ascx control inside the ascx control there are issues.
The nested ascx control is a repeater control and this may be the reason, but I am unsure.
I'm not exactly sure what question to ask, but I'll list a few below.
How do I attach the field validators up a level to the 1st ascx control?
Is it possible to put required fields into a nested ascx control?
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Mar 7, 2011
Imagine the scenario of a contact form, whereby data is to be collected and further transmitted via email to the appropriate address. One of the important fields asks for an email address, pretty vital to instrumenting the call-back. So say I check for the entry of something, anything, in the mail address field using a RequiredFieldValidator; a further check in code will determine if the mail address supplied is usable, or not. Given that both of these checks are essentially validation, I would simply like to reuse the RequiredFieldValidator from my code-behind; is this possible? For example, something as simple as:
MyValidator.Show();
return;
What I have done in the past is add a Label to the form as well, and just use a similar tactic, only making the control visible as needs be and returning. Ideally I'd like to get rid of this altogether and simply use one control to output my error message. For an idea of current code, below is a skeletal listing, which, even as such, is the concept in its entirety: Within the page:
<asp:TextBox runat="server" ID="MailAddressTextBox" />
<asp:RequiredFieldValidator runat="server" ID="MailAddressValidator" ErrorMessage="Enter a valid mail address" ControlToValidate="MailAddressTextBox" />
<asp:Label runat="server" ID="MailAddressError" Text="Enter a valid mail address" Visible="false" />
And within the code-behind:
MailAddress enquirerMail;
try
{
enquirerMail = new MailAddress(MailAddressTextBox.Text);
}
catch
{
MailAddressError.Visible = true;
return;
}
The pitfall with the approach of hiding/showing error labels, other than the obvious of extra controls, is the maintenance of their visibility, and also a label for each error, or lists of messages and in-code alterations to the display.
Also, multiple validators is something I want to avoid, at least in this particular instance; a RegularExpressionValidator won't cut it here, as we all know just selecting the 'best' regex for parsing mail addresses can be a feat in itself, or maybe it will contain more characters than the actual page content + markup. Another reason for my aversion to regex, should you need one, is that, ultimately, I have to implement the above try/catch validation regardless, as even a 'validated' address may cause failure in the MailAddress constructor.
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May 7, 2015
Article here [URL] ....
The code only working for DataList what if I want replace it with ListView just cuz I need my items design responsive ...
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May 12, 2010
Is it possible to have "Required Field Validator" controls to validate more than one field (example I have 12 textboxes that are required. I want to try an avoid having 12 RFV controls. If a validation does get triggered, is there a way to display a customized message ("textA is empty" or "textB is empty") etc.?
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Nov 1, 2010
I have used a required field validator followed by a regular expression validator but the required field validator is not working.....
<asp:TextBox ID="txtSummary" runat="server" TextMode="MultiLine" Width="700px"
CssClass="txtStyle" Font-Names="Arial" MaxLength="1000"
ValidationGroup="Valtxt" TabIndex="2" Rows="4">
</asp:TextBox>
<asp:RegularExpressionValidator ID="regValSummary" runat="server"........
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Dec 11, 2010
I found a very piculiar care in ASP.Net MVC webpage submission to server. The model object is bound to the action event. It was working fine. I added another interger field to my model object and added a control to the webpage(.aspx). When I submit the page without entering data in the new field, I found that my ModelState.IsValid in the Action Event, is false and there is error registered as the field value is required. I am surprised why it will be a mandatory field? when I have not set is as Mandatory ? Is there some thing wrong I am doing? I putting the samples below.
New Filed in ASPX:
[Code]....
Controller Object :
[
{
AcceptVerbs(HttpVerbs.Post)]public
ActionResult AddDriver(Driver driver)
}
On submit of the page when control comes to the AddDriver Action event , I found the ModelState.IsValid is false.
why it is happening as I have not put any require attribute in the Model object's field.
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May 31, 2010
I have this in my Model
[Code]....
When on the view the validation doesnt fire stating that it is required - where as the other values do (such as strings or integer fields )- how does this work for Booleans?
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Jul 28, 2010
Page validation using Required field validator is not firing I configured everything and tested in other page and found its working fine.
I placed my controls under TabContainer is that the reason for not firing.
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Mar 28, 2010
I'm trying to write a form for a user to leave a testimonial on the website. I would like a group of inputs related to the users name (title, firstname and surname) or an input for their company name to be required. They can leave both if they like, but they must at least either fill in all the inputs related to their name or the input for their company name.can I do this with the RequiredFieldValidator?
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Mar 18, 2010
How to add required field support to custom web control? I can't see any doc on that?
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Feb 2, 2010
I have the need to remove my custom field validators on the clientside based on certain conditions
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Jun 24, 2010
I have a contact page with fields like E-mail Address, Name, Subject, and Message. I use a RequiredFieldValidator on each text box. They work fine when I test it with the Visual Studio built-in development server, but on IIS7, they don't work and they allow the Send button's click event to be fired.
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Dec 14, 2010
im currently doing a web application.
user are allow to insert some events.
but if user didnt insert any fields, error message should pop out.
but for my calendar view, if user didnt select any, it still can pass through but data is not stored.
so how do i set required field validators to calendar?
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Mar 15, 2011
I have Dropdownlist whose value field and text field are bind at runtime. it has --select-- as first item with a value of '0' and the rest of the values are bind at runtime.
I have given validaton group for both the control and the validator as "g1" and Intialvalue=0
But still the page is posting back even if I select '--select--' option.
[Code]....
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Apr 26, 2010
If I have a search object with a list of fields, can I, using the System.ComponentModel.DataAnnotations namespace, set it up to validate that at least one of the fields in the search is not null or empty? i.e All the fields are optional but at least one should always be entered.
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Mar 10, 2011
My Required validation for a field doesn't work because even the user didn't input anything, the watermark text is sent to the server. What's the best way to handle this? I'm using jquery and asp.net mvc.
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Feb 5, 2010
I have 2 date fields - From and To Date.Both are using required field validators, regular expression validtors and compare validators. When the user enters an invalid date range, e.g. 02-29-2010 to 02-29-2010 (non-leap year), the comparevalidator throws an 'from cannot be greater than to date range' error.Why am I seeing this error when From is not > To.Here's the code snippet
[Code]....
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