ToSByte Method (Object)

Convert.ToSByte Method (Object)

Converts the value of the specified object to an 8-bit signed integer.

This API is not CLS-compliant. 

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

[CLSCompliantAttribute(false)]
public static sbyte ToSByte(
	Object value
)

Parameters

value
Type: System.Object

An object that implements the IConvertible interface, or null.

Return Value

Type: System.SByte
An 8-bit signed integer that is equivalent to value, or zero if value is null.

ExceptionCondition
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.

The return value is the result of invoking the IConvertible.ToSByte method of the underlying type of value.

The following example attempts to convert each element in an object array to a signed byte.

object[] values = { true, -12, 163, 935, 'x', "104", "103.0", "-1",
                    "1.00e2", "One", 1.00e2};
sbyte result;

foreach (object value in values)
{
   try {
      result = Convert.ToSByte(value);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }                     
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the SByte type.",
                        value.GetType().Name, value);
   }
   catch (FormatException) {
      Console.WriteLine("The {0} value {1} is not in a recognizable format.",
                        value.GetType().Name, value);
   }
   catch (InvalidCastException) {
      Console.WriteLine("No conversion to a Byte exists for the {0} value {1}.",
                        value.GetType().Name, value);

   }
}                           
// The example displays the following output: 
//    Converted the Boolean value true to the SByte value 1. 
//    Converted the Int32 value -12 to the SByte value -12. 
//    The Int32 value 163 is outside the range of the SByte type. 
//    The Int32 value 935 is outside the range of the SByte type. 
//    Converted the Char value x to the SByte value 120. 
//    Converted the String value 104 to the SByte value 104. 
//    The String value 103.0 is not in a recognizable format. 
//    Converted the String value -1 to the SByte value -1. 
//    The String value 1.00e2 is not in a recognizable format. 
//    The String value One is not in a recognizable format. 
//    Converted the Double value 100 to the SByte value 100.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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