Get the specified members of the current Type in C#?

To get the specified members of the current Type in C#, we use the GetMember() method from the System.Reflection namespace. This method allows us to retrieve information about specific members of a type, such as fields, properties, methods, and events.

Syntax

Following is the syntax for getting specified members of a Type −

Type.GetMember(string name)
Type.GetMember(string name, BindingFlags bindingAttr)
Type.GetMember(string name, MemberTypes type, BindingFlags bindingAttr)

Parameters

• name − The string containing the name of the member to get.

• bindingAttr − A bitmask comprised of one or more BindingFlags that specify how the search is conducted.

• type − The value to search for (fields, properties, methods, etc.).

Return Value

Returns an array of MemberInfo objects representing the specified members, or an empty array if no members are found.

Using GetMember() with Default Binding

Example

using System;
using System.Reflection;

public class Demo {
   public static void Main() {
      Type type = typeof(Subject);
      try {
         FieldInfo fieldInfo = type.GetField("SubName");
         MemberInfo[] info = type.GetMember("SubName");
         Console.Write("Members = ");
         for (int i = 0; i < info.Length; i++)
            Console.WriteLine(" {0}", info[i]);
         Console.WriteLine("FieldInfo = {0}", fieldInfo);
      }
      catch (ArgumentNullException e) {
         Console.Write("{0}", e.GetType(), e.Message);
      }
   }
}

public class Subject {
   public string SubName = "Science";
}

The output of the above code is −

Members =  System.String SubName
FieldInfo = System.String SubName

Using GetMember() with BindingFlags

Example

using System;
using System.Reflection;

public class Demo {
   public static void Main() {
      Type type = typeof(Subject);
      try {
         FieldInfo fieldInfo = type.GetField("SubName");
         MemberInfo[] info = type.GetMember("SubName", BindingFlags.Public | BindingFlags.Instance);
         Console.Write("Members = ");
         for (int i = 0; i < info.Length; i++)
            Console.WriteLine(" {0}", info[i]);
         Console.WriteLine("FieldInfo = {0}", fieldInfo);
      }
      catch (ArgumentNullException e) {
         Console.Write("{0}", e.GetType(), e.Message);
      }
   }
}

public class Subject {
   public string SubName = "Science";
}

The output of the above code is −

Members =  System.String SubName
FieldInfo = System.String SubName

Getting Multiple Member Types

Example

using System;
using System.Reflection;

public class Demo {
   public static void Main() {
      Type type = typeof(Student);
      MemberInfo[] allMembers = type.GetMembers(BindingFlags.Public | BindingFlags.Instance);
      
      Console.WriteLine("All public instance members:");
      foreach (MemberInfo member in allMembers) {
         Console.WriteLine("  {0} - {1}", member.Name, member.MemberType);
      }
      
      Console.WriteLine("\nSpecific member 'Name':");
      MemberInfo[] nameMembers = type.GetMember("Name");
      foreach (MemberInfo member in nameMembers) {
         Console.WriteLine("  {0} - {1}", member.Name, member.MemberType);
      }
   }
}

public class Student {
   public string Name = "John";
   public int Age { get; set; } = 20;
   public void Study() { }
}

The output of the above code is −

All public instance members:
  get_Age - Method
  set_Age - Method
  Study - Method
  GetType - Method
  ToString - Method
  Equals - Method
  GetHashCode - Method
  Name - Field
  Age - Property

Specific member 'Name':
  Name - Field

Common BindingFlags

Conclusion

The GetMember() method in C# provides a powerful way to retrieve specific members of a Type using reflection. It returns an array of MemberInfo objects that can be used to examine and work with the members dynamically at runtime.