System Namespace

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The exception that is thrown when an arithmetic, casting, or conversion operation in a checked context results in an overflow.

OverflowException Class Members

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Constructors Visibility Constructor Parameters public OverflowException ( ) public OverflowException ( String message ) public OverflowException ( String message , Exception innerException )

In languages that detect overflow, OverflowException is the exception that gets thrown. For example, in C#, the checked keyword is used to detect overflow conditions. An OverflowException exception occurs only in a checked context.

The following Microsoft intermediate language ( MSIL ) instructions throw OverflowException:

• add.ovf.<signed>
• conv.ovf.<to type>
• mul.ovf.<type>
• sub.ovf.<type>

For a result from an integral or decimal-type arithmetic operation or conversion that is outside the range of the destination type:

• In a checked context, a compile-time error occurs if the operation is a constant expression. Otherwise, an OverflowException is thrown if the operation is performed at run-time.
• In an unchecked context, the result is truncated by discarding any high-order bits that do not fit in the destination type.

OverflowException uses the HRESULT COR_E_OVERFLOW, that has the value 0x80131516.

For a list of initial property values for an instance of OverflowException, see the OverflowException constructors.

Exception