Control Required Field Article For Free

RequiredFieldValidator is basically doing validations against the required fields in the front end. The user must fill in all the mandatory fields, to ensure this we make use of RequiredFieldValidator.

Fields marked with are mandatory Using an asterisk () symbol content authors notify mandatory field. This is said to be one of the accessible modes of identifying a mandatory field, however this method also will be a problem with screen readers in certain times.

Add the "Required" attribute to the field that you want to make mandatory for insertion. The Required attribute requires the "System. ComponentModel. DataAnnotations" namespace.

Are you asking for representing mandatory fields in C# winforms or displaying message while submitting the data. To mark field mandatory you can use color coding or astrick() after field name or change font of the field caption to mark those field mandatory.

Required fields should be indicated with either a symbol or text, not just color. When providing an indicator for a required field, it should be placed right before the form field. This allows a screen reader to read the indicator to a screen reader user right before the user activates the field.

Using the Validation Controls in ASP.NET 2.0 The RequiredFieldValidator control enables you to require a user to enter a value into a form field before submitting the form. You must set two important properties when using the RequiredFieldValdiator control: ControlToValidate The ID of the form field being validated.

To validate a required entry Add a RequiredFieldValidator control to the page and set the following properties: Property. Description.Add a test in your ASP.NET Web page code to check for validity. For details, see How to: Test Validity Programmatically for ASP.NET Server Controls. The following example shows the .