Validation Server Control

Validation server controls are used to validate user input.

Validation Server Control

Validation server controls are used to validate the data of input controls. If the data does not pass validation, an error message is displayed to the user.

The syntax for creating a Validation server control is:

<asp:control_name id="some_id" runat="server" />
Validation Server Control Description
CompareValidator Compares the value of one input control with another input control or a fixed value.
CustomValidator Allows you to write a method to handle the validation of input values.
RangeValidator Checks the input value within a range of two values.
RegularExpressionValidator Ensures that the value of the input control matches the specified pattern.
RequiredFieldValidator It is an input control that becomes a required (mandatory) field.
ValidationSummary Display a report of all validation errors in the web page.