It seems to me that any method of input I provide for a user needs some scrutiny, but I have never seen someone implement a single set of validation that all inputs must pass.
Is there some basic validation you do on every single field a user can type in to? For the sake of simplicity let's just talk about text boxes.
Do you add any code to watch for control characters?
I am trying to figure out what are the basic assemblies required to run a basic ASP.NET 4.0 website. Say.. a website with just a label in it. I looked online and didn't find a list there. I know installing the framework 4.0 will give me all the dlls but I just need the basic ones that will make a basic site work on ASP.NET 4.0.
View 1 RepliesI have data annotation validators:
[Code]....
On EDITION form I have only fields: 'title' and 'message' (without field 'link'), but for 'link' is still triggered validation. How can I exclude 'link' from validation in action. I have tried:
[Code]....
But this doesn't work. I still see: "The link field is required.". What is the solution ?
I have a form in MVC3 that includes a check box to copy data if it is the same as a previous form. If the checkbox is checked, it populates the text box with the content from the hidden field. Here's a sample to illustrate what I'm doing:
[Code]....
When the box is checked, it calls FillInfo(), which uses DHTML to fill the TextBox called "ThisInfo" with the value of the hidden field "DefaultInfo."
Here's the problem: if the form fails validation (e.g. "ThisInfo" is a required field and is left blank), the hidden "DefaultInfo" box is getting cleared out -- which I DON'T want it to do. As a result, when the checkbox is clicked, it is copying empty data into the "ThisInfo" field.
How can I establish validation on form fields such that upon submit button, fields that do not follow validation change their background colour?
View 6 RepliesIn my .aspx page which derives from a master page I have a contact form which uses some validation, such as the RequiredFieldValidator and RegularExpressValidator.At top of my page I have a link bar and whenver I am at contact.aspx I can't navigate to the other pages as if that I need to fill in the necessary data so that it satisfies the validator. How can I fix this?
View 1 RepliesI 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]....
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.
View 2 RepliesI've got an ASP.NET 4 site on which I want to allow people to put '<' in their password. However, .NET gets in the way by blocking (what it sees as) an attempt to put HTML in a form field. I know I can turn off input validation entirely, but I only want to turn it off for this one field. Does anyone know an easy way to do that?
View 2 RepliesI'm trying to use a field validator to make sure one of my list boxes has a selection before the user is able to proceed to the next page. i'm having is that if the validation message is triggered, all of the buttons on my page loose functionality.Meaning, if I purposely trigger the validation control, I can't get rid of the error message and none of my buttons do anything when clicke after this.
The majority of the HTML:
[Code]....
Is there something that I need to add to the code behind of the page or the Java Script that I'm using?
I have three asp checkbox controls and button click. If any of those three checkboxes is not selected it shoudld validate . How can i accomplish this?
i have imported data from excel to datatable but i need to validate port no column which should
allow only numeric value and also i need to check the single quotes and need to replace to double quotes.
I have got a label that displays the result of the last action (ie "Success - Record Upload") I also have a Validation Summary and when validation fails i want to clear the label so it no longer displays the result of the last action.
View 4 RepliesHere is a code for my web form control
<asp:TextBox runat="server" ID="txtUsername"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="txtUsername" runat="server" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>
<asp:CustomValidator OnServerValidate="checkUsername" ID="CustomValidator1" runat="server" ControlToValidate="txtUsername" EnableClientScript="true" ClientValidationFunction="checkUsername" ErrorMessage="CustomValidator"></asp:CustomValidator>
Client side validation
<script type="text/javascript">
function checkUsername(source,args){
alert("test");
/* alert(args.Value);
[Code]....
I'm trying to user ValidatorCalloutExtender on my login page but I'm having some trouble with it. I have two TextBoxes, two RequiredFieldValidators and two ValidatorCalloutExtenders. Here's my page's code:
[Code]....
So, my problem is quite simple, I guess. When the user press "ButtonLogin", the first ValidatorCallout is displayed requesting that the user enter his username. The validation text for the password field isn't displayed. If I enter the username and then try to post the form again, the validation text for the password isn't displayed at all. The text is displayed only after I click on TextBoxPassword. Is there any way to solve this? If I wasn't using ValidatorCalloutExtender, text for both validators would be displayed. So, I'm guessing that internally both validators actually trigger. The second isn't displayed because the first one is already been displayed. But even after entering text on the first textbox, the text doesn't come up. I believe it's still thinking that the first validator is been displayed.
I have studied Phil Haack's post [URL]about custom validation, however, I can not get this to work for my case. I need something like the "PropertiesMustMatch" validator in a default MVC2 project generated by Visual Studio.
None of my custom javascript gets called. I am registering the custom adapter in Application_Start using DataAnnotationsModelValidatorProvider.RegisterAdapter(....). In the DataAnnotationsModelValidator derived class, GetClientValidationRuls is never even called.
What is going on here? Maybe this type of validation where your validation attribute has to be applied to a class, not a propety, does not yet work with the RTM release of Visual Studio 2010.
How can validate Password field using Custom validater control in asp.net 2.0 ?
View 1 RepliesI have a web forms where i have 10 required field validators for 10 textboxes. Validation group for these required field validator needs to be determined when the page loads. I tried to change the validator in the .cs file but failed.
rfvBT.ValidationGroup = "registration";
i am working on web-form for which I have set the validation summary showmessagebox = "true". I have two required field validators, which trigger on a checkbox's OnCheckedChanged event....now my problem is, when I hit submit, the page does not submit if I do not enter any values in the text boxes..which is correct behavior but it does not point out to the error or does not display the message box...i have to scroll up to see what is wrong with he page and then try to enter the values...I do not understand why my message box does not show up or at least why my setfocusonerror which is set to true does not show me the text boxes. find my code below.....
View 1 Repliesi am working on web-form for which I have set the validation summary showmessagebox = "true".
I have two required field validators, which trigger on a checkbox's OnCheckedChanged event....now my problem is, when I hit submit, the page does not submit if I do not enter any values in the text boxes..which is correct behavior but it does not point out to the error or does not display the message box.
i have to scroll up to see what is wrong with he page and then try to enter the values...I do not understand why my message box does not show up or at least why my setfocusonerror which is set to true does
not show me the text boxes...
find my code below...
[Code]....
[Code]....
[Code]....
i am using the required field validation and Reqularexpressioncontrol in gridview. Fields are in the gridview are in template, but only the edit button it is not templeted, this edit buton is of type Imagebutton and same goes with canel and update.
1_ Do i have to use the Templeted fields for edit/cancel/ and update as well in order to use the validation?
2_Validaiotn should only work when user clicks on the Update button, it should not trigger when cancel button fired.
I'm using Data Annotations to validate my fields, Eventhough field is marked with Required Attribute the DropdownList/ListBox Value doesn't fire up to show they are required. how can I solve this.
View 3 RepliesI'm a total newbie with MVC -- learning it with MVC3 using Razor.
I just watched the video on PluralSight and was just following along with the example. I created my own Movie and MovieRepository objects. I then created a strongly typed view for adding a new movie. This is what's in the view:
[Code]....
My Movie object looks like this:
[Code]....
If I click submit without entering anything in the input field, I get validation messages i.e. The Rating field is required or if I enter non-numeric data, I get The field Rating must be a number.
I didn't wire this and wanted to understand where this is coming from.
I am creating a fairly straight forward form for collecting data about vendors. I have a requirement that says the email address is required for a certain payment method and not other payment methods. The way I currently have this implemented is using a dropdownlist for the payment method and a TextBox for the email. I have been using ValidatorCalloutExtenders on all the other input fields with great success, but this is the first case where I need to be able to turn the validator and extender behavior on and off based on a selection of the dropdownlist.
I have tried many things and have searched these forums and google until my hands and eyes got tired, but have yet to find success, hence this post. I am aware of the dispose and $create methods, and that is currently what I am trying to do, but after the create occurs, while the behavior has been created, it doesn't seem like it has been created completely or something. To implement this, I am using a function tied to the onChange Event Handler of the drop down list. The function essentially checks the dropdownlist selection value and if it is NOT "ACH", then it finds the behavior attached to the requiredfieldvalidator attached to the email textbox and calls the dispose method on that behavior, if the selection value IS "ACH" then the method calls
$create(AjaxControlToolkit.ValidatorCalloutBehavior, { "closeImageUrl": "/VendorMaintenanceForm/WebResource.axd?d=IJFIM0l1l2KBLbEjcc5eS12jNidTRT60rU5Tz_Vg2CIJnYpw0GWOKDcVthhDzk9qkoREy7KswErAqM-kEQdJ5c18thtoit9YPZB3oq-EKdE1&t=633129167627987742", "highlightCssClass":
"HighLight", "id": 'emVal', "warningIconImageUrl": "/VendorMaintenanceForm/WebResource.axd?d=IJFIM0l1l2KBLbEjcc5eS12jNidTRT60rU5Tz_Vg2CIJnYpw0GWOKDcVthhDzk9qpoLKUlLQVCOCBk1mUhtC-YfwF57Tw0d676WGnnWiYI41&t=633129167627987742", "width": "300px" }, null, null,
$get("ctl00_MainContent_RequiredFieldValidator5"));
The reason I say this, is because once the page loads, the default value is to have the validator disabled, then if I select the payment method that enables the validator, it seems to work fine, but then if I cycle through the payment method choices again, I end up with a null pointer exception to the TextBox element when the validator is trying to apply the highlightCssClass on form validation. So, to summarize, it seems like when the page loads, things get built correctly, but then when I start doing the dispose and $create, things are recreated correctly so that when the submit button click causes validation, the validator throws a null pointer exception.
I know it can be hard to debug this sort of thing using words, but I was just wondering if I am going about this the right way or if there is an easier way to conditionally enable/disable a requiredfieldvalidator and validatorcalloutextender.
Is it possible that i can use same validation rules more than one time on same field in jquery ?
For ex. if i have one textbox and i want to validate it. can i use two regular expression which can be checked one after another ?