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TypeCode Enumeration

Specifies the type of an object.

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

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public enum TypeCode
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public enum TypeCode
SerializableAttribute 
ComVisibleAttribute(true) 
public enum TypeCode

 Member nameDescription
Supported by the .NET Compact FrameworkBooleanA simple type representing Boolean values of true or false
Supported by the .NET Compact FrameworkByteAn integral type representing unsigned 8-bit integers with values between 0 and 255. 
Supported by the .NET Compact FrameworkCharAn integral type representing unsigned 16-bit integers with values between 0 and 65535. The set of possible values for the Char type corresponds to the Unicode character set. 
Supported by the .NET Compact FrameworkDateTimeA type representing a date and time value. 
Supported by the .NET Compact FrameworkDBNullA database null (column) value. 
Supported by the .NET Compact FrameworkDecimalA simple type representing values ranging from 1.0 x 10 -28 to approximately 7.9 x 10 28 with 28-29 significant digits. 
Supported by the .NET Compact FrameworkDoubleA floating point type representing values ranging from approximately 5.0 x 10 -324 to 1.7 x 10 308 with a precision of 15-16 digits. 
Supported by the .NET Compact FrameworkEmptyA null reference. 
Supported by the .NET Compact FrameworkInt16An integral type representing signed 16-bit integers with values between -32768 and 32767. 
Supported by the .NET Compact FrameworkInt32An integral type representing signed 32-bit integers with values between -2147483648 and 2147483647. 
Supported by the .NET Compact FrameworkInt64An integral type representing signed 64-bit integers with values between -9223372036854775808 and 9223372036854775807. 
Supported by the .NET Compact FrameworkObjectA general type representing any reference or value type not explicitly represented by another TypeCode
Supported by the .NET Compact FrameworkSByteAn integral type representing signed 8-bit integers with values between -128 and 127. 
Supported by the .NET Compact FrameworkSingleA floating point type representing values ranging from approximately 1.5 x 10 -45 to 3.4 x 10 38 with a precision of 7 digits. 
Supported by the .NET Compact FrameworkStringA sealed class type representing Unicode character strings. 
Supported by the .NET Compact FrameworkUInt16An integral type representing unsigned 16-bit integers with values between 0 and 65535. 
Supported by the .NET Compact FrameworkUInt32An integral type representing unsigned 32-bit integers with values between 0 and 4294967295. 
Supported by the .NET Compact FrameworkUInt64An integral type representing unsigned 64-bit integers with values between 0 and 18446744073709551615. 

Call the GetTypeCode method on classes that implement the IConvertible interface to obtain the type code for an instance of that class.

Otherwise, call an object's GetType method to obtain its Type object, then call the Type object's GetTypeCode method to obtain the object's type code.

The following code example demonstrates how the TypeCode enumeration can be used. In a decision block inside the WriteObjectInfo method, the TypeCode of an Object parameter is examined, and an appropriate message is written to the console.

static void WriteObjectInfo(object testObject)
{
    TypeCode    typeCode = Type.GetTypeCode( testObject.GetType() );

    switch( typeCode )
    {
        case TypeCode.Boolean:
            Console.WriteLine("Boolean: {0}", testObject);
            break;

        case TypeCode.Double:
            Console.WriteLine("Double: {0}", testObject);
            break;

        default:
            Console.WriteLine("{0}: {1}", typeCode.ToString(), testObject);
            break;
    }
}

    static void WriteObjectInfo(Object testObject)
    {
        TypeCode typeCode = Type.GetTypeCode(testObject.GetType());

        switch (typeCode) {
        
            case TypeCode.Boolean :
                Console.WriteLine("Boolean: {0}", testObject);
                break;

            case TypeCode.Double :
                Console.WriteLine("Double: {0}", testObject);
                break;

            default :
                Console.WriteLine("{0}: {1}", typeCode.ToString(), testObject);
                break;
        }
    } //WriteObjectInfo
} //Class1

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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