Grid Cells Editing Validation

The 'validationRules' property determines the validation rules of the column values. The available set of rules are: 'min', 'max', 'minLength', 'maxLength', 'minDate', 'maxDate', 'null', 'email', 'required', 'requiredTrue' and 'pattern'. A cell editor is active until a valid value is entered by the user. In this demo, 'First Name', 'Last Name' and 'Product Name' are with 'required' and 'minLength' validation rules. The 'Quantity' and 'Unit Price' columns are with 'min' and 'max' set to '1' and '20'. validation rules.