Specifies the type of an object.
public enum class TypeCode
public enum TypeCode
[System.Serializable]
public enum TypeCode
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public enum TypeCode
type TypeCode =
[<System.Serializable>]
type TypeCode =
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type TypeCode =
Public Enum TypeCode
A null reference.
Object 1A general type representing any reference or value type not explicitly represented by another TypeCode
.
A database null (column) value.
Boolean 3A simple type representing Boolean values of true
or false
.
An 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.
SByte 5An integral type representing signed 8-bit integers with values between -128 and 127.
Byte 6An integral type representing unsigned 8-bit integers with values between 0 and 255.
Int16 7An integral type representing signed 16-bit integers with values between -32768 and 32767.
UInt16 8An integral type representing unsigned 16-bit integers with values between 0 and 65535.
Int32 9An integral type representing signed 32-bit integers with values between -2147483648 and 2147483647.
UInt32 10An integral type representing unsigned 32-bit integers with values between 0 and 4294967295.
Int64 11An integral type representing signed 64-bit integers with values between -9223372036854775808 and 9223372036854775807.
UInt64 12An integral type representing unsigned 64-bit integers with values between 0 and 18446744073709551615.
Single 13A 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.
Double 14A 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.
Decimal 15A simple type representing values ranging from 1.0 x 10 -28 to approximately 7.9 x 10 28 with 28-29 significant digits.
DateTime 16A type representing a date and time value.
String 18A sealed class type representing Unicode character strings.
ExamplesThe 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;
}
}
Sub WriteObjectInfo(ByVal testObject As Object)
Dim typeCode As TypeCode = Type.GetTypeCode(testObject.GetType())
Select Case typeCode
Case typeCode.Boolean
Console.WriteLine("Boolean: {0}", testObject)
Case typeCode.Double
Console.WriteLine("Double: {0}", testObject)
Case Else
Console.WriteLine("{0}: {1}", typeCode.ToString(), testObject)
End Select
End Sub
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.
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