Comparison Functions

GreaterThan

Ensures the value being validated is greater than a specified value.

Methods

Broken Rule

Value must be greater than '{other}'.

Example Usage

Using type instance.

var validator = new ValidatorBuilder<int>()
    .GreaterThan(18)
    .Build();

var result = validator.Validate(16);

Using selector expression.

var validator = new ValidatorBuilder<Employee>()
    .GreaterThan(e => e.Age, 18)
    .Build();

var result = validator.Validate(new Employee { Age = 20 });

Using For function.

var validator = new ValidatorBuilder<Employee>()
    .For(e => e.Age, v => v.GreaterThan(18))
    .Build();

var result = validator.Validate(new Employee { Age = 17 });

GreaterThanOrEqual

Ensures the value being validated is greater than or equal to a specified value.

Methods

Broken Rule

Value must be greater than or equal to '{other}'.

Example Usage

Using type instance.

var validator = new ValidatorBuilder<int>()
    .GreaterThanOrEqual(18)
    .Build();
  
var result = validator.Validate(16);

Using selector expression.

var validator = new ValidatorBuilder<Employee>()
    .GreaterThanOrEqual(e => e.Age, 18)
    .Build();

var result = validator.Validate(new Employee { Age = 20 });

Using For function.

var validator = new ValidatorBuilder<Employee>()
    .For(e => e.Age, v => v.GreaterThanOrEqual(18))
    .Build();

var result = validator.Validate(new Employee { Age = 17 });

LessThan

Ensures the value being validated is less than a specified value.

Methods

Broken Rule

Value must be less than '{other}'.

Example Usage

Using type instance.

var validator = new ValidatorBuilder<int>()
    .LessThan(18)
    .Build();
  
var result = validator.Validate(16);

Using selector expression.

var validator = new ValidatorBuilder<Employee>()
    .LessThan(e => e.Age, 18)
    .Build();

var result = validator.Validate(new Employee { Age = 20 });

Using For function.

var validator = new ValidatorBuilder<Employee>()
    .For(e => e.Age, v => v.LessThan(18))
    .Build();

var result = validator.Validate(new Employee { Age = 17 });

LessThanOrEqual

Ensures the value being validated is less than or equal to a specified value.

Methods

Broken Rule

Value must be less than or equal to '{other}'.

Example Usage

Using type instance.

var validator = new ValidatorBuilder<int>()
    .LessThanOrEqual(18)
    .Build();
  
var result = validator.Validate(16);

Using selector expression.

var validator = new ValidatorBuilder<Employee>()
    .LessThanOrEqual(e => e.Age, 18)
    .Build();

var result = validator.Validate(new Employee { Age = 20 });

Using For function.

var validator = new ValidatorBuilder<Employee>()
    .For(e => e.Age, v => v.LessThanOrEqual(18))
    .Build();

var result = validator.Validate(new Employee { Age = 17 });

Range

Ensures the value being validated is within (inclusive) a specified value.

Methods

Broken Rule

Value must be in range '{lower}' to '{upper}'.

Example Usage

Using type instance.

var validator = new ValidatorBuilder<int>()
    .Range(18, 30)
    .Build();
  
var result = validator.Validate(24);

Using selector expression.

var validator = new ValidatorBuilder<Employee>()
    .Range(e => e.Age, 18, 30)
    .Build();

var result = validator.Validate(new Employee { Age = 20 });

Using For function.

var validator = new ValidatorBuilder<Employee>()
    .For(e => e.Age, v => v.Range(18, 30))
    .Build();

var result = validator.Validate(new Employee { Age = 17 });

Compare

Ensures two resolved values from the target of selector expressions are equal.

Methods

Broken Rule

Value must be equal to value of {rightSelector}.

Example Usage

Using selector expressions.

var validator = new ValidatorBuilder<LoginModel>()
    .Compare(m => m.Password, m => m.PasswordConfirm)
    .Build();

var result = validator.Validate(new LoginModel 
{ 
    Password = "StrongP@ssw0rd",
    PasswordConfirm = "StrongPassw0rd"
});

CompareGreaterThan

Ensures the value of the target of the first selector expression is greater than the value of the target of the second selector expression.

Methods

Broken Rule

Value must be greater than value of {rightSelector}.

Example Usage

Using selector expressions.

var validator = new ValidatorBuilder<TwoNumbersModel>()
    .CompareGreaterThan(m => m.Number1, m => m.Number2)
    .Build();

var result = validator.Validate(new TwoNumbersModel 
{ 
    Number1 = 8,
    Number2 = 7
});

CompareGreaterThanOrEqual

Ensures the value of the target of the first selector expression is greater than or equal to the value of the target of the second selector expression.

Methods

Broken Rule

Value must be greater than or equal to value of {rightSelector}.

Example Usage

Using selector expressions.

var validator = new ValidatorBuilder<TwoNumbersModel>()
    .CompareGreaterThanOrEqual(m => m.Number1, m => m.Number2)
    .Build();

var result = validator.Validate(new TwoNumbersModel 
{ 
    Number1 = 8,
    Number2 = 7
});

CompareLessThan

Ensures the value of the target of the first selector expression is less than the value of the target of the second selector expression.

Methods

Broken Rule

Value must be less than value of {rightSelector}.

Example Usage

Using selector expressions.

var validator = new ValidatorBuilder<TwoNumbersModel>()
    .CompareLessThan(m => m.Number1, m => m.Number2)
    .Build();

var result = validator.Validate(new TwoNumbersModel 
{ 
    Number1 = 7,
    Number2 = 8
});

CompareLessThanOrEqual

Ensures the value of the target of the first selector expression is less than or equal to the value of the target of the second selector expression.

Methods

Broken Rule

Value must be less than or equal to value of {rightSelector}.

Example Usage

Using selector expressions.

var validator = new ValidatorBuilder<TwoNumbersModel>()
    .CompareLessThanOrEqual(m => m.Number1, m => m.Number2)
    .Build();

var result = validator.Validate(new TwoNumbersModel 
{ 
    Number1 = 7,
    Number2 = 8
});