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
- provider
Type: System.IFormatProvider
An object that implements the IFormatProvider interface. (This parameter is not used; specify nulla null reference (Nothing in Visual Basic).)
Return Value
Type: System.Int64
None. The return value for this member is not used.
Implements
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.