Get constructor information: Display return type, name and parameters : Constructor « Reflection « C# / CSharp Tutorial






using System; 
using System.Reflection; 
 
class MyClass { 
  public MyClass(int i) { 
    Console.WriteLine("Constructing MyClass(int). "); 
  } 
 
  public MyClass(int i, int j) { 
    Console.WriteLine("Constructing MyClass(int, int). "); 
  } 
 
  public int sum() { 
    return 0; 
  } 
 
  public bool isBetween(int i) { 
    return false; 
  } 
 
  public void set(int a, int b) { 
    Console.Write("Inside set(int, int). "); 
  } 
 
  public void set(double a, double b) { 
    Console.Write("Inside set(double, double). "); 
  } 
 
  public void show() { 
    Console.WriteLine("Values"); 
  } 
} 
 
class MainClass { 
  public static void Main() { 
    Type t = typeof(MyClass); 
 
    // Get constructor info. 
    ConstructorInfo[] ci = t.GetConstructors(); 
 
    Console.WriteLine("Available constructors: "); 
    foreach(ConstructorInfo c in ci) { 
      // Display return type and name. 
      Console.Write("   " + t.Name + "("); 
 
      // Display parameters. 
      ParameterInfo[] pi = c.GetParameters(); 
 
      for(int i=0; i < pi.Length; i++) { 
        Console.Write(pi[i].ParameterType.Name + " " + pi[i].Name); 
        if(i+1 < pi.Length) 
           Console.Write(", "); 
      } 
 
      Console.WriteLine(")"); 
    } 
    Console.WriteLine(); 
  } 
}
Available constructors:
   MyClass(Int32 i)
   MyClass(Int32 i, Int32 j)








19.3.Constructor
19.3.1.Get constructor information: Display return type, name and parameters
19.3.2.Find matching constructor
19.3.3.Dynamically invoking constructors
19.3.4.Utilize MyClass without assuming any prior knowledge: invoke constructor
19.3.5.Using a ConstructorInfo to create new instance
19.3.6.Call parent constructor from abstract class
19.3.7.Get the ConstructorInfo object matching the specified binding flags, and displays the signature of the constructor.