'宣言 Public Overloads Function Validate( _ ByVal dataValue As Object, _ ByVal targetType As Type, _ ByVal constraintFlags As ValueConstraintFlags, _ ByVal formatProvider As IFormatProvider, _ ByVal format As String, _ ByRef errorMessage As String _ ) As Boolean
public bool Validate( object dataValue, Type targetType, ValueConstraintFlags constraintFlags, IFormatProvider formatProvider, string format, ref string errorMessage )