Choose the right statement about validation controls. Can have multiple validation controls on a single input control.A RangeValidator is used when input must conform to a pre-defined pattern.Only the RequiredFieldValidator checks empty controls.Page Validation enables you to verify that all of the controls on a page are valid before the controls perform some action.a.ii, ivb.ii, iii, ivc.i, iii, ivd.i, ii, iv

The correct answer is c. i, iii, iv.

Explanation:

i. You can have multiple validation controls on a single input control. This is true because you might want to check for more than one condition on a single input. For example, you might want to check if a field is not empty and if it contains a valid email address.

ii. A RangeValidator is not used when input must conform to a pre-defined pattern. This statement is false. A RegularExpressionValidator is used for this purpose. A RangeValidator is used to ensure that a user’s input is within a specified range of values.

iii. Only the RequiredFieldValidator checks empty controls. This is true. The RequiredFieldValidator control ensures that the required input controls are not left blank.

iv. Page Validation enables you to verify that all of the controls on a page are valid before the controls perform some action. This is also true. Page validation is a feature that checks all the validation controls on a page to ensure that they are valid before any action is performed.