Convert::ToSByte Method (Object, IFormatProvider)
Converts the value of the specified object to an 8-bit signed integer, using the specified culture-specific formatting information.
Assembly: mscorlib (in mscorlib.dll)
[CLSCompliantAttribute(false)] public: static signed char ToSByte( Object^ value, IFormatProvider^ provider )
Parameters
- value
- Type: System::Object
An object that implements the IConvertible interface.
- provider
- Type: System::IFormatProvider
An object that supplies culture-specific formatting information.
Return Value
Type: System::SByteAn 8-bit signed integer that is equivalent to value, or zero if value is nullptr.
| Exception | Condition |
|---|---|
| FormatException | value is not in an appropriate format. |
| InvalidCastException | value does not implement the IConvertible interface. -or- The conversion is not supported. |
| OverflowException | value represents a number that is less than SByte::MinValue or greater than SByte::MaxValue. |
provider enables the user to specify culture-specific conversion information about the contents of value. For example, if value is a String that represents a number, provider could supply culture-specific information about the notation used to represent that number.
The base types ignore provider; however, the parameter may be used if value is a user-defined type that implements the IConvertible interface.
The following example defines a ByteString class that stores both signed and unsigned bytes as hexadecimal strings along with a field that indicates the sign of the byte. The ByteString class implements the IConvertible interface. Its IConvertible::ToSByte method calls the Parse(String, IFormatProvider) method to perform the conversion. If it fails, it throws an OverflowException.
The following example shows how the IConvertible::ToSByte implementation of the ByteString class is called by the Convert::ToSByte(Object, IFormatProvider) method.
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.