ASP.NET » Validation

We have 33 Validation tutorials, you can see below:


Self Validating ASP.NET Text Box


How to extend web form controls to be self validating so you don\'t have to mess with validation controls.


Details  •  Read Tutorial  •  Views: 944  •  Rate: 5 (1 votes)  •  Feb 23 2007 - 11:52

Multiple File Upload With Progress Bar Using Flash and ASP.NET


How to use Flash to upload multiple files, and in a medium-trust hosting environment.


Details  •  Read Tutorial  •  Views: 759  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:43

Custom Validation Summary in ASP.NET


Replace the ugly ValidationSummary control text with your own, customizable popup summary window.


Details  •  Read Tutorial  •  Views: 946  •  Rate: 5 (1 votes)  •  Feb 16 2007 - 07:33

ListControl SelectedItem Validator


RequiredField Validator for ASP.NET ListControl derived webserver controls


Details  •  Read Tutorial  •  Views: 370  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:32

CustomValidator with XMLHttpRequest object


CustomValidator which uses XMLHTTpRequest to make validation.


Details  •  Read Tutorial  •  Views: 358  •  Rate: 3 (1 votes)  •  Feb 16 2007 - 07:32

Building an ASP.NET custom web control: a textbox and validator in one


In this article we will have a look at implementing a custom web control. This web control will inherit from the TextBox web control, and will automatically add a required field validator at run-time.


Details  •  Read Tutorial  •  Views: 494  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:31

Implementing an ASP.NET Validator - UriValidator


An article describing how to implement a custom ASP.NET validator.


Details  •  Read Tutorial  •  Views: 326  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:30

A Better ValidationSummary Control for Data Driven Applications


The ValidationSummary Control can be easily subclassed to make data driven web applications more code-friendly.


Details  •  Read Tutorial  •  Views: 399  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:29

Smart Validation Summary


An article demonstrating creation of a custom ASP.NET validation summary control with highlighting of invalid form fields intelligently.


Details  •  Read Tutorial  •  Views: 503  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:29

Client/Server-side ASP.NET Credit Card Validation Control


Article discussing new version of ASP.NET Credit Card Validator, including both server and client-side checks and VS.NET designer support.


Details  •  Read Tutorial  •  Views: 805  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:27

Single Control Validation Solution


A single control to validate a .NET Web Form.


Details  •  Read Tutorial  •  Views: 390  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:27

ASP.NET Validators Unclouded


Demistifying the mysterious ASP.NET validator controls, allowing fast and painless validation of Web Forms.


Details  •  Read Tutorial  •  Views: 347  •  Rate: 0 (0 votes)  •  Feb 16 2007 - 07:26

Dangers of using OnChange/ViewState for validation.


This article demonstrates serious bugs and security vulnerabilities that can be easily introduced by using the ASP.NET OnChange event for validation.


Details  •  Read Tutorial  •  Views: 337  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:24

ValidationScriptGenerator


This article gives you a solution for generating a client side validation script in a component model that you can reuse in an ASP.NET project.


Details  •  Read Tutorial  •  Views: 395  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:24

Transferring Control Focus through Custom Validation File, in ASP.NET


Validation controls will not set the focus to the appropriate control when the validation fails. This can be achieved using a custom validation file.


Details  •  Read Tutorial  •  Views: 318  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:23

Group Validation Buttons


This article will teach you how to create your own ASP.NET buttons and image buttons that enable only a set of validators that are attached to these controls on your ASP.NET page.


Details  •  Read Tutorial  •  Views: 413  •  Rate: 5 (1 votes)  •  Feb 02 2007 - 13:22

Combine RegularExpression Validation Control with RequiredField Validation Control


RequiredField and Regular Expression validation together... you can use this control in place of group required field and regular expression validation controls.


Details  •  Read Tutorial  •  Views: 524  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:22

SSN Validation Web Service


This article describes the implementation of an ASP.NET Web Service which can be used for SSN format validation.


Details  •  Read Tutorial  •  Views: 378  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:21

List Validator


Validates a ListControl to ensure at least one RadioButton or CheckBox is checked.


Details  •  Read Tutorial  •  Views: 446  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:18

Custom Validation Scripts - Extending the client side script functionality


Override the default implementention of client side validation of ASP.NET and modify the default functionality by adding focus to error fields and individual alerts for each invalid field


Details  •  Read Tutorial  •  Views: 420  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:18

Enhancing the presentation of standard validator outputs


How flexible is the normal functionality of ASP.NET validators? In this article, I am going to show how to customize the appearance of the attached control of a validator during an error situation on the server or the client side, or even call a custom client function without postback.


Details  •  Read Tutorial  •  Views: 322  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:17

CustomValidator dependent on multiple controls.


Example of how to require that the user enters at least one of multiple textboxes.


Details  •  Read Tutorial  •  Views: 693  •  Rate: 0 (0 votes)  •  Feb 02 2007 - 13:17

Adding ASP.NET validation at runtime


An article describing how to add errors to the validation summary at runtime


Details  •  Read Tutorial  •  Views: 458  •  Rate: 2 (1 votes)  •  Jan 23 2007 - 14:46

ASP.NET Required TextBox (Graphical RequiredFieldValidator)


An ASP.NET custom TextBox control with a built-in RequiredFieldValidator, providing a similar look and feel to the Windows Forms ErrorProvider.


Details  •  Read Tutorial  •  Views: 388  •  Rate: 0 (0 votes)  •  Jan 23 2007 - 14:43

Credit Card Validator control for ASP.NET


Article outlining how to create a credit card validator control fully derived from BaseValidator.


Details  •  Read Tutorial  •  Views: 500  •  Rate: 3 (1 votes)  •  Jan 23 2007 - 14:42

Multiple Fields Validator - An ASP.NET Validation Control


Discussing the MultipleFieldsValidator that validates a group of fields in which at least one is required, like phone number, mobile phone number, or email. It inherits the BaseValidator and uses some new cool ASP.NET 2.0 features.


Details  •  Read Tutorial  •  Views: 651  •  Rate: 0 (0 votes)  •  Jan 23 2007 - 14:41

Validate using RequiredFieldValidator


In this tutorial you\'ll find out how to validate a TextBox and RadioButtonList control on a webform using RequiredFieldValidator, which will show a warning and stop the submission of the form if a required field has no value.


Details  •  Read Tutorial  •  Views: 448  •  Rate: 5 (1 votes)  •  Jan 22 2007 - 12:22

Client/Server-side ASP.NET Credit Card Validation Control


Article discussing new version of ASP.NET Credit Card Validator, including both server and client-side checks and VS.NET designer support.


Details  •  Read Tutorial  •  Views: 1787  •  Rate: 0 (0 votes)  •  Sep 10 2004 - 19:58

Credit Card Validator control for ASP.NET


Article outlining how to create a credit card validator control fully derived from BaseValidator.


Details  •  Read Tutorial  •  Views: 1544  •  Rate: 5 (1 votes)  •  Sep 10 2004 - 19:56

ASP.NET Validators Unclouded Recommended


Demistifying the mysterious ASP.NET validator controls, allowing fast and painless validation of Web Forms.


Details  •  Read Tutorial  •  Views: 1158  •  Rate: 0 (0 votes)  •  Sep 10 2004 - 19:54

Single Control Validation Solution


A single control to validate a .NET Web Form...


Details  •  Read Tutorial  •  Views: 865  •  Rate: 3 (1 votes)  •  Sep 10 2004 - 19:53

Implementing an ASP.NET Validator - UriValidator


An article describing how to implement a custom ASP.NET validator.


Details  •  Read Tutorial  •  Views: 826  •  Rate: 1 (1 votes)  •  Sep 10 2004 - 19:51

Effective Email Address Validation


In this article, we would discuss a very brief and overall technique to verify the email addresses of the users that signup for a web account.


Details  •  Read Tutorial  •  Views: 997  •  Rate: 4 (1 votes)  •  Sep 10 2004 - 19:49