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Enum.CompareTo Method

Compares this instance to a specified object and returns an indication of their relative values.

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

public int CompareTo(
	Object target


Type: System.Object
An object to compare, or null.

Return Value

Type: System.Int32
A signed number indicating the relationship of this instance to target.

Return Value


Less than zero

The value of this instance is less than the value of target.


The value of this instance is equal to the value of target.

Greater than zero

The value of this instance is greater than the value of target.


target is null.




target and this instance are not the same type.


This instance is not type SByte, Int16, Int32, Int64, Byte, UInt16, UInt32, or UInt64.


This instance is null.

The following example illustrates the use of CompareTo in the context of Enum.

using System;

public class Example
   enum VehicleDoors { Motorbike = 0, Sportscar = 2, Sedan = 4, Hatchback = 5 };

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
      VehicleDoors myVeh = VehicleDoors.Sportscar;
      VehicleDoors yourVeh = VehicleDoors.Motorbike;
      VehicleDoors otherVeh = VehicleDoors.Sedan;

      outputBlock.Text += String.Format("Does a {0} have more doors than a {1}?", myVeh, yourVeh) + "\n";
      outputBlock.Text += String.Format("{0}{1}", myVeh.CompareTo(yourVeh) > 0 ? "Yes" : "No", "\n") + "\n";

      outputBlock.Text += String.Format("Does a {0} have more doors than a {1}?", myVeh, otherVeh) + "\n";
      outputBlock.Text += String.Format("{0}", myVeh.CompareTo(otherVeh) > 0 ? "Yes" : "No") + "\n";


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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