C# | Type.GetMethods() Method

Last Updated : 16 Dec, 2019

Type.GetMethods() Method is used to get the methods of the current Type. There are 2 methods in the overload list of this method as follows:

GetMethods(BindingFlags) Method

GetMethods() Method

GetMethods(BindingFlags) Method

This method is used to search for the methods defined for the current Type, using the specified binding constraints when overridden in a derived class.

Syntax: public abstract System.Reflection.MethodInfo[] GetMethods (System.Reflection.BindingFlags bindingAttr); Here, it takes a bitmask comprised of one or more BindingFlags which specify how the search is conducted or, Zero (Default), to return an empty array. Return Value: This method returns an array of MethodInfo objects representing all methods defined for the current Type which match the specified binding constraints Or an empty array of type MethodInfo, if no methods are defined for the current Type, or if none of the defined methods match the binding constraints.

Below programs illustrate the use of Type.GetMethods(BindingFlags) Method: Example 1:

csharp

// C# program to demonstrate the
// Type.GetMethods() Method
using System;
using System.Globalization;
using System.Reflection;

// Defining class Empty
public class Empty { }

class GFG {

    // Main Method
    public static void Main()
    {
        // Declaring and initializing object of Type
        Type objType = typeof(Empty);

        // try-catch block for handling Exception
        try {

            // Getting array of Method by
            // using GetMethods() Method
            MethodInfo[] info = objType.GetMethods(BindingFlags.Public | BindingFlags.Instance);

            // Display the Result
            Console.WriteLine("Methods of current type is as Follow: ");
            for (int i = 0; i < info.Length; i++)
                Console.WriteLine(" {0}", info[i]);
        }

        // catch ArgumentNullException here
        catch (ArgumentNullException e)
        {
            Console.Write("name is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

Methods of current type is as Follow: 
 Boolean Equals(System.Object)
 Int32 GetHashCode()
 System.Type GetType()
 System.String ToString()

Example 2:

csharp

// C# program to demonstrate the
// Type.GetMethods() Method
using System;
using System.Globalization;
using System.Reflection;

class GFG {

    // Main Method
    public static void Main()
    {
        // Declaring and initializing object of Type
        Type objType = typeof(int);

        // try-catch block for handling Exception
        try {

            // Getting array of Method by
            // using GetMethods() Method
            MethodInfo[] info = objType.GetMethods(BindingFlags.Public | BindingFlags.Static);

            // Display the Result
            Console.WriteLine("Methods of current type is as Follow: ");
            for (int i = 0; i < info.Length; i++)
                Console.WriteLine(" {0}", info[i]);
        }

        // catch ArgumentNullException here
        catch (ArgumentNullException e) 
        {
            Console.Write("name is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

Methods of current type is as Follow: 
 Int32 Parse(System.String)
 Int32 Parse(System.String, System.Globalization.NumberStyles)
 Int32 Parse(System.String, System.IFormatProvider)
 Int32 Parse(System.String, System.Globalization.NumberStyles, System.IFormatProvider)
 Boolean TryParse(System.String, Int32 ByRef)
 Boolean TryParse(System.String, System.Globalization.NumberStyles, System.IFormatProvider, Int32 ByRef)

GetMethods() Method

This method is used to return all the public methods of the current Type.

Syntax: public System.Reflection.MethodInfo[] GetMethods (); Return Value: This method returns an array of MethodInfo objects representing all the public methods defined for the current Type or an empty array of type MethodInfo if no public methods are defined for the current Type.

Below programs illustrate the use of the above-discussed method: Example 1:

csharp

// C# program to demonstrate the
// Type.GetMethods() Method
using System;
using System.Globalization;
using System.Reflection;

// Defining class Empty
class Empty { }

class GFG {

    // Main Method
    public static void Main()
    {
        // Declaring and initializing object of Type
        Type objType = typeof(Empty);

        // try-catch block for handling Exception
        try {

            // Getting array of Method by
            // using GetMethods() Method
            MethodInfo[] info = objType.GetMethods();

            // Display the Result
            Console.WriteLine("Methods of current type is as Follow: ");
            for (int i = 0; i < info.Length; i++)
                Console.WriteLine(" {0}", info[i]);
        }

        // catch ArgumentNullException here
        catch (ArgumentNullException e) 
        {
            Console.Write("name is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

Methods of current type is as Follow: 
 Boolean Equals(System.Object)
 Int32 GetHashCode()
 System.Type GetType()
 System.String ToString()

Example 2:

csharp

// C# program to demonstrate the
// Type.GetMethods() Method
using System;
using System.Globalization;
using System.Reflection;

// Defining class Student
public class Student {

    private string name, dept;
    private int roll;

    // Constructor
    public Student(string name, int roll, string dept)
    {
        this.name = name;
        this.roll = roll;
        this.dept = dept;
    }

    // getter for name
    public string getName()
    {
        return name;
    }

    // getter for roll
    public int getRoll()
    {
        return roll;
    }

    // getter for dept
    public string getDept()
    {
        return dept;
    }
}

class GFG {

    // Main Method
    public static void Main()
    {
        // Declaring and initializing object of Type
        Type objType = typeof(Student);

        // try-catch block for handling Exception
        try {

            // Getting array of Method by
            // using GetMethods() Method
            MethodInfo[] info = objType.GetMethods(BindingFlags.Public | BindingFlags.Instance);

            // Display the Result
            Console.WriteLine("Methods of current type is as Follow: ");
            for (int i = 0; i < info.Length; i++)
                Console.WriteLine(" {0}", info[i]);
        }

        // catch ArgumentNullException here
        catch (ArgumentNullException e)
        {
            Console.Write("name is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

Output:

Methods of current type is as Follow: 
 System.String getName()
 Int32 getRoll()
 System.String getDept()
 Boolean Equals(System.Object)
 Int32 GetHashCode()
 System.Type GetType()
 System.String ToString()

Reference: