DL.Plugin.Validation
Simple lightweight validation for properties in .NET projects
Usage
Use IValidationObject with ValidationRules to provide a validation to a property
public IValidationObject<string> Login { get; } = new ValidationObject<string>
{
ValidationRules = { Your list of validation rules }
};
Trigger a validation
Login.Validate();
You can access the result of validation like this.
Login.IsValid
Binding example
.Bind(IsValidProperty, "Login.IsValid");
.Bind(ErrorMessageProperty, "Login.Message");
.Bind(ValueProperty, "Login.Value");
Custom Validation
Simply implement IValidationRule
public class NotEmptyValidationRule : IValidationRule<string>
{
public string Message { get; set; }
public ValidationResult Validate(string value)
{
return !string.IsNullOrWhiteSpace(value) || !string.IsNullOrEmpty(value)
? ValidationResult.Valid()
: ValidationResult.Invalid(Message);
}
}
Examples
Usage for Xamarin.Forms project with pure MVVM architecture can be found in samples
