Validation Controls

How many types of validation controls are provided by ASP.NET ?
There are six main types of validation controls :-

RequiredFieldValidator It checks whether the control have any value. It's used when you want the control should not be empty.
RangeValidator It checks if the value in validated control is in that specific range.
Example TxtCustomerCode should not be more than eight length.
CompareValidator It checks that the value in controls should match some specific value. Example Textbox TxtPie should be equal to 3.14.
RegularExpressionValidator When we want the control value should match with a specific regular expression.
CustomValidator It is used to define UserDefined validation.
ValidationSummary It displays summary of all current validation errors.