> For the complete documentation index, see [llms.txt](https://docs.shouldly.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.shouldly.org/documentation/equality/notbe.md).

# NotBe

`ShouldNotBe` is the inverse of `ShouldBe`.

## Objects

`ShouldNotBe` works on all types and compares using `.Equals`.

```cs
var theSimpsonsCat = new Cat { Name = "Santas little helper" };
theSimpsonsCat.Name.ShouldNotBe("Santas little helper");
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/ShouldNotBeExamples.Objects.codeSample.approved.cs#L1-L2) | [anchor](#snippet-ShouldNotBeExamples.Objects.codeSample.approved.cs)

**Exception**

```
theSimpsonsCat.Name
    should not be
"Santas little helper"
    but was
```

## Numeric

`ShouldNotBe` also allows you to compare numeric values, regardless of their value type.

### Integer

```cs
const int one = 1;
one.ShouldNotBe(1);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/ShouldNotBeExamples.NumericInt.codeSample.approved.cs#L1-L2) | [anchor](#snippet-ShouldNotBeExamples.NumericInt.codeSample.approved.cs)

**Exception**

```
one
    should not be
1
    but was
```

### Long

```cs
const long aLong = 1L;
aLong.ShouldNotBe(1);
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/ShouldNotBeExamples.NumericLong.codeSample.approved.cs#L1-L2) | [anchor](#snippet-ShouldNotBeExamples.NumericLong.codeSample.approved.cs)

**Exception**

```
aLong
    should not be
1L
    but was
```

## DateTime(Offset)

`ShouldNotBe` DateTime overloads are similar to the numeric overloads and also support tolerances.

```cs
var date = new DateTime(2000, 6, 1);
date.ShouldNotBe(new(2000, 6, 1, 1, 0, 1), TimeSpan.FromHours(1.5));
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/ShouldNotBeExamples.DateTime.codeSample.approved.cs#L1-L2) | [anchor](#snippet-ShouldNotBeExamples.DateTime.codeSample.approved.cs)

**Exception**

```
date
    should not be within
01:30:00
    of
2000-06-01T01:00:01.0000000
    but was
2000-06-01T00:00:00.0000000
```

## TimeSpan

`TimeSpan` also has tolerance overloads

```cs
var timeSpan = TimeSpan.FromHours(1);
timeSpan.ShouldNotBe(timeSpan.Add(TimeSpan.FromHours(1.1d)), TimeSpan.FromHours(1.5d));
```

[snippet source](https://github.com/shouldly/shouldly/blob/master/src/DocumentationExamples/CodeExamples/ShouldNotBeExamples.TimeSpanExample.codeSample.approved.cs#L1-L2) | [anchor](#snippet-ShouldNotBeExamples.TimeSpanExample.codeSample.approved.cs)

**Exception**

```
timeSpan
    should not be within
01:30:00
    of
02:06:00
    but was
01:00:00
```