MGR.Guard API

All methods are extensions methods to the MGR.Guard.Guardian instance accessible via the Guardian.ChecksThat property. They throw exception when the condition is not met.

The methods all have two forms:

1. One that takes the parameter to check, the name of the parameter, and possibly some additional values;
2. One that takes an expression to specify the value and the name of the parameter, and possibly some additional values.

Exists

Checks if a System.IO.FileSystemInfo exists.

Exception thrown

System.IO.FileNotFoundException if the file or directory doesn't exists.

IsBetween

Checks if a value is between a min and a max limit.

Exception thrown

System.ArgumentOutOfRangeException if the value is not between the specified min and max limits.

IsDefined

Checks if a value is a defined enum value.

Exception thrown

System.ArgumentException if the specified type is not an enum.

System.ArgumentOutOfRangeException if the value is not a defined value of the specified enum.

IsEqualTo

Checks if a value is equal to another reference.

Exception thrown

System.ArgumentNullException if the specified comparer is null.

System.ArgumentException if the specified value is not equal to the reference.

IsEqualToZero

Checks if a value is equal to zero.

Exception thrown

System.IO.ArgumentException if the specified value is not equal to zero.

IsGreaterThan

Checks if a value is greater than a minimal limit.

Exception thrown

System.ArgumentNullException if the specified comparer is null.

System.ArgumentOutOfRangeException if the specified value is lower than the minimal limit.

IsGreaterThanOrEqualTo

Checks if a value is greater than or equal to a minimal limit.

Exception thrown

System.ArgumentNullException if the specified comparer is null.

System.ArgumentOutOfRangeException if the specified value is lower than or equal to the minimal limit.

IsGreaterThanOrEqualToZero

Checks if a value is greater than or equal to zero.

Exception thrown

System.ArgumentOutOfRangeException if the specified value is lower than or equal to zero.

IsGreaterThanZero

Checks if a value is greater than zero.

Exception thrown

System.ArgumentOutOfRangeException if the specified value is lower than zero.

IsLowerThan

Checks if a value is lower than a maximal limit.

Exception thrown

System.ArgumentNullException if the specified comparer is null.

System.ArgumentOutOfRangeException if the specified value is greater than a maximal limit.

IsLowerThanOrEqualTo

Checks if a value is lower than or equal to a minimal limit.

Exception thrown

System.ArgumentNullException if the specified comparer is null.

System.ArgumentOutOfRangeException if the specified value is greater than or equal to the minimal limit.

IsLowerThanOrEqualToZero

Checks if a value is lower than or equal to zero.

Exception thrown

System.ArgumentOutOfRangeException if the specified value is greater than or equal to zero.

IsLowerThanZero

Checks if a value is lower than zero.

Exception thrown

System.ArgumentOutOfRangeException if the specified value is greater than zero.

IsNotEmptyGuid

Checks if a System.Guid is not empty.

Exception thrown

System.ArgumentNullException if the specified System.Guid is empty.

IsNotNull

Checks if a value is not null.

Exception thrown

System.ArgumentNullException if the specified value is null.

IsNotNullOrEmpty

Checks if a string is not null or empty.

Exception thrown

System.ArgumentNullException if the specified value is null or empty.

IsStrictlyBetween

Checks if a value is strictly between a min and a max limit.

Exception thrown

System.ArgumentOutOfRangeException if the value is not strictly between the specified min and max limits.