Validating integer datatype with regularexpressionvalidator

For comparing a date against a fixed value, you can simply use the date validator and specify its $min or $max property.

If you need to compare two dates entered in the form, e.g.

Info: How to determine if a value is empty or not is a separate topic covered in the Empty Values section.

Default value from database schema could be loaded via load Default Values() method of the model. If you do not specify them, they will take the values of the attribute and the model class being validated. intval, boolval, ...) to ensure a specific type for an attribute, you can simply specify the function names of the filter without the need to wrap them in a closure: This validator checks if the input value represents a valid image file.

Int32Int32Not Null Validation This rule ensures that the input value has been entered and is therefore not null.

Integer Range Validation This rule validates that an integer lies within a range of values specified in its two required parameters:min An Int32 value that specifies the minimum number allowed in this An Int32 value that specifies the maximum number allowed in this field.

Example of Using Validation Rules Let’s assume that you have a simple registration form with two fields: Name and Email Address.

String and Data References String Not Null Validation This rule ensures that the input value has been entered and is therefore not null.

Regular Expression Validation This rule validates that a string conforms to the regular expression specified in its required parameter: Pattern A string value that holds the regular expression pattern to use.

You can apply one or more validation rules to a data type field to control the user’s input.

For example, you want to ensure that the user: C1 CMS comes with a predefined set of validation rules that you can apply to data type fields, too. Each type of field has its own set of validation rules.

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It also may change attribute's value if normalization or IPv6 expansion is enabled.

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