ASP.NET.in.a.Nutshell.Second.Edition [Electronic resources] نسخه متنی

This interface defines members used for validation controls. The
Validate( ) method is used to examine supplied
information, compare it with the valid parameters, and update
IsValid property appropriately. The
ErrorMessage contains the message that should be
generated for the user when the supplied information is not valid.

When creating a custom validation control, you do not need to
implement this interface. Instead, you should inherit from one of the
validation classes in the
System.Web.UI.WebControls namespace. The base
class, System.Web.UI.WebControls.BaseValidator,
implements this interface.

public interface 
IValidator  {
// Public Instance Properties
public string 
ErrorMessage {set; get; }
public bool 
IsValid {set; get; }
// Public Instance Methods
public void 
Validate ( );
}

Implemented By

System.Web.UI.MobileControls.BaseValidator,
System.Web.UI.WebControls.BaseValidator

Returned By

ValidatorCollection.this

Passed To

ValidatorCollection.{Add( ), Contains(
), Remove( )}