Retrieves a 64-bit signed integer value from the SerializationInfo store.
public long GetInt64(
name is null.
The value associated with name cannot be converted to a 64-bit signed integer.
An element with the specified name is not found in the current instance.
If the value is a 64-bit signed integer, or can be converted to one, that value is returned; otherwise, a InvalidCastException is thrown. All conversions are done by the IFormatterConverter associated with this SerializationInfo.
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