public static void AddRequiredValidator <TReturnType>(this ValidatableViewModelBase validatableViewModel,
Expression <Func <TReturnType> > expression, string validateErrorMessage = null)
{
string propertyName = expression.GetMemberName();
((IValidate)validatableViewModel.Validator).Register <TReturnType>(propertyName, i =>
{
if (i is null)
{
return(ValidateResult.Invalid);
}
return(ValidateResult.Valid);
}, validateErrorMessage ?? $"{propertyName} is NULL");
}
public static void AddMinLengthValidator(this ValidatableViewModelBase validatableViewModel,
Expression <Func <string> > expression, int minLength, string validateErrorMessage = null)
{
string propertyName = expression.GetMemberName();
((IValidate)validatableViewModel.Validator).Register <string>(propertyName, i =>
{
if (i is null)
{
return(ValidateResult.Invalid);
}
if (i.Length < minLength)
{
return(ValidateResult.Invalid);
}
return(ValidateResult.Valid);
},
validateErrorMessage ?? $"{propertyName} MinLength is {minLength}");
}
internal Validator(ValidatableViewModelBase validateOwner)
{
_owner = validateOwner;
_ownerType = validateOwner.GetType();
}