DBNull.IConvertible.ToInt64 Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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

This conversion is not supported. Attempting to make this conversion throws an InvalidCastException.

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

Syntax

'Declaration
Private Function ToInt64 ( _
    provider As IFormatProvider _
) As Long Implements IConvertible.ToInt64
long IConvertible.ToInt64(
    IFormatProvider provider
)

Parameters

Return Value

Type: System.Int64
None. The return value for this member is not used.

Implements

IConvertible.ToInt64(IFormatProvider)

Exceptions

Exception Condition
InvalidCastException

This conversion is not supported for the DBNull type.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.