# Contain

## ShouldContain

```cs
var mrBurns = new Person { Name = "Mr.Burns", Salary = 3000000 };
var kentBrockman = new Person { Name = "Kent Brockman", Salary = 3000000 };
var homer = new Person { Name = "Homer", Salary = 30000 };
var millionaires = new List<Person> { kentBrockman, homer };
millionaires.ShouldContain(mrBurns);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/EnumerableShouldContainExamples.ShouldContain.codeSample.approved.cs#L1-L5) | [anchor](#snippet-EnumerableShouldContainExamples.ShouldContain.codeSample.approved.cs)

**Exception**

```
millionaires
    should contain
Mr.Burns
    but was actually
[Kent Brockman, Homer]
```

### With Predicate

```cs
var homer = new Person { Name = "Homer", Salary = 30000 };
var moe = new Person { Name = "Moe", Salary = 20000 };
var barney = new Person { Name = "Barney", Salary = 0 };
var millionaires = new List<Person> { homer, moe, barney };
millionaires.ShouldContain(m => m.Salary > 1000000);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/EnumerableShouldContainExamples.ShouldContain_Predicate.codeSample.approved.cs#L1-L5) | [anchor](#snippet-EnumerableShouldContainExamples.ShouldContain_Predicate.codeSample.approved.cs)

**Exception**

```
millionaires
    should contain an element satisfying the condition
(m.Salary > 1000000)
    but does not
```

## ShouldNotContain

```cs
var homerSimpson = new Person { Name = "Homer" };
var homerGlumplich = new Person { Name = "Homer" };
var lenny = new Person { Name = "Lenny" };
var carl = new Person { Name = "carl" };
var clubOfNoHomers = new List<Person> { homerSimpson, homerGlumplich, lenny, carl };
clubOfNoHomers.ShouldNotContain(homerSimpson);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/EnumerableShouldNotContainExamples.ShouldNotContain.codeSample.approved.cs#L1-L6) | [anchor](#snippet-EnumerableShouldNotContainExamples.ShouldNotContain.codeSample.approved.cs)

**Exception**

```
clubOfNoHomers
    should not contain
Homer
    but was actually
[Homer, Homer, Lenny, carl]
```

### With Predicate

```cs
var mrBurns = new Person { Name = "Mr.Burns", Salary = 3000000 };
var kentBrockman = new Person { Name = "Homer", Salary = 3000000 };
var homer = new Person { Name = "Homer", Salary = 30000 };
var millionaires = new List<Person> { mrBurns, kentBrockman, homer };
millionaires.ShouldNotContain(m => m.Salary < 1000000);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/EnumerableShouldNotContainExamples.ShouldNotContain_Predicate.codeSample.approved.cs#L1-L5) | [anchor](#snippet-EnumerableShouldNotContainExamples.ShouldNotContain_Predicate.codeSample.approved.cs)

**Exception**

```
millionaires
    should not contain an element satisfying the condition
(m.Salary < 1000000)
    but does
```