CODEWITHSUNDEEP
.netc#-5.0fluentvalidation
Ghanshyam Shukla
Ghanshyam Shukla

Reputation: 113

What Is the Regex Patten for only special characters not digits and alphabets (Using fluent validation with .Matches())?)

For Example:

Rule(x=x.Password)
    .Matches(@"(**?:[^​˜!@#$]*[˜​!@#$]**){" + count+ "}")
    .WithMessage("Password should contain at least {0} special character(s)", count);

Here in above not matches all special characters like dot,plus+ etc.

Upvotes: 2

Views: 5145

Answers (2)

prabhakaran S
prabhakaran S

Reputation: 728

Declare regex variable like below line.

readonly Regex regEx = new Regex("^[a-zA-Z0-9]*$");

Refer below code for usage.

RuleFor(x=x.Password).Cascade(CascadeMode.StopOnFirstFailure)
             .Matches(regEx)
             .WithMessage("Password should contain at least {0} special character(s)", "Password"));

Upvotes: 6

mosyu
mosyu

Reputation: 57

I don't know how to use a single regex to do this. But you can use custom validator for your validation.

class CustomerValidator : AbstractValidator<Customer>
{

    public CustomerValidator()
    {
        RuleFor(customer => customer.Name).SetValidator(new PasswordValidator());
    }
}

class PasswordValidator : PropertyValidator
{
    private const int Count = 3;
    private readonly Regex regex;
    const string expression = @"[^A-Za-z0-9]";

    public PasswordValidator()
        : base(() => "Property {PropertyName} is not in the correct format.")
    {
        regex = new Regex(expression, RegexOptions.IgnoreCase);
    }
    protected override bool IsValid(PropertyValidatorContext context)
    {
        if (context.PropertyValue == null) return false;
        var collection = regex.Matches((string)context.PropertyValue);
        return collection.Count >= Count;
    }
}

Upvotes: 1

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