#19 Validation Control - ASP.NET C# WEB FORM |
Description:
validation script : copy the below script in your code.
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appSettings
add key="validationSettings:unobtrusiveValidationMode" value="None"
/appSettings
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In ASP.NET Web Forms, validation controls are used to perform input validation on the client side as well as the server side. These controls help ensure that user inputs meet specific criteria before the data is processed.
Here are the main types of validation controls in ASP.NET Web Forms:
1. RequiredFieldValidator
Ensures that the user does not skip an input field.
2. CompareValidator
Compares the value of one input control to another input control or a fixed value.
3. RangeValidator
Checks that the value of an input control is within a specified range.
4. RegularExpressionValidator
Ensures that the value of an input control matches a specified regular expression pattern.
5. CustomValidator
Allows you to write custom validation logic.
6. ValidationSummary
Displays a summary of all validation errors on the page.
Usage in a Web Form
To use these validation controls in a web form, include them inside a form tag and use a submit button to trigger the validation.
Server-Side Validation
While client-side validation is convenient, it is essential to validate input on the server side as well, to ensure security and data integrity. You can check the Page.IsValid property in the server-side event handler.
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