MethodBase.IsAbstract Property

Definition

Gets a value indicating whether the method is abstract.

public bool IsAbstract { get; }

Property Value

true if the method is abstract; otherwise, false.

Implements

Examples

The following example determines whether specified the method is abstract and displays the result.

using System;
using System.Reflection;
// using System.Windows.Forms;

class methodbase
{
    public static int Main(string[] args)
    {
        Console.WriteLine ("\nReflection.MethodBase");

        // Get the types.
        Type MyType1 = Type.GetType("System.Runtime.Serialization.Formatter");
        Type MyType2 = Type.GetType("System.Reflection.MethodBase");

        // Get and display the methods.
        MethodBase Mymethodbase1 =
            MyType1.GetMethod("WriteInt32", BindingFlags.NonPublic|BindingFlags.Instance);

        MethodBase Mymethodbase2 =
            MyType2.GetMethod("GetCurrentMethod", BindingFlags.Public|BindingFlags.Static);

        Console.Write("\nMymethodbase = " + Mymethodbase1.ToString());
        if (Mymethodbase1.IsAbstract)
            Console.Write ("\nMymethodbase is an abstract method.");
        else
            Console.Write ("\nMymethodbase is not an abstract method.");

        Console.Write("\n\nMymethodbase = " + Mymethodbase2.ToString());
        if (Mymethodbase2.IsAbstract)
            Console.Write ("\nMymethodbase is an abstract method.");
        else
            Console.Write ("\nMymethodbase is not an abstract method.");

        return 0;
    }
}

Remarks

An abstract member is declared on a base class and has no implementation supplied.

To get the MethodBase, first get the type. From the type, get the method. From the method, get the MethodBase. If the MethodBase or constructor is other than public, it is protected and cannot be readily accessed. To access a non-public method, set the BindingFlags mask to NonPublic in GetMethod.

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

See also