This documentation is archived and is not being maintained.

DBNull::IConvertible::ToType Method

This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Converts the current DBNull object to the specified type.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

private:
virtual Object^ ToType(
	Type^ type, 
	IFormatProvider^ provider
) sealed = IConvertible::ToType

Parameters

type
Type: System::Type
The type to convert the current DBNull object to.
provider
Type: System::IFormatProvider
An object that implements the IFormatProvider interface and is used to augment the conversion. If nullptr is specified, format information is obtained from the current culture.

Return Value

Type: System::Object
The boxed equivalent of the current DBNull object, if that conversion is supported; otherwise, an exception is thrown and no value is returned.

Implements

IConvertible::ToType(Type, IFormatProvider)

ExceptionCondition
InvalidCastException

This conversion is not supported for the DBNull type.

ArgumentNullException

type is nullptr.

Three conversions are supported: If the type parameter specifies Object or DBNull, the return value is the current DBNull object itself. If the type parameter specifies String, the return value is the string returned by the ToString method.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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