Reducing Code With Anonymous Functions

In this blog, you will learn how to use anonymous functions to reduce the number of functions.

Anonymous functions, in a simple way, are functions that can be activated directly without declaring his name, as his own name says "anonymous".

 

This technic works in C# projects, .NET Framework, .NET Core or WPF and can be used to reduce code, on this POST I attached a sample of using anonymous X common (regular) way.

 

The final result is a reduced code and fast startup. 

 

 

The common way

 

Below is a regular code for fired Click events. To run this Form there is extra code in FormCommon.Designer.cs.

 

FrmCommon.cs

using System;
using System.Windows.Forms;
namespace AnonymousEventsForClick
{
    public partial class FrmCommon : Form
    {
        public FrmCommon()
        {
            InitializeComponent();
        }
        private void menu1ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            // Your code
            // CODE xyz
            var n = 0;
            APIProject.Print(++n);
        }
        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {
            APIProject.CheckStatus();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            // Sample to access the object
            if (!(sender is Button)) return;
            APIProject.OpenDocument();
        }
    }
}

FrmCommon.Desingner.cs

 

Extra code

 

...

this.menu1ToolStripMenuItem.Click += new System.EventHandler(this.menu1ToolStripMenuItem_Click);

...

this.button1.Click += new System.EventHandler(this.button1_Click);

...

this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);

...

 

The Anonymous way

 

Below is the same code with anonymous functions to fire events, with fewer functions, lines, and usings. There is no extra code in FrmAnonymous.Designer.cs. 

using System.Windows.Forms;
namespace AnonymousEventsForClick
{
    public partial class FrmAnonymous : Form
    {
        public FrmAnonymous()
        {
            InitializeComponent();
            menu1ToolStripMenuItem.Click += (s, e) =>
            {
                // You can add your code in the body
                // CODE xyz
                var n = 0;
                APIProject.Print(++n);
            };
            checkBox1.CheckedChanged += (s, e) => { APIProject.CheckStatus(); };
            button1.Click += (s, e) =>
            {
                // Sample to access the object
                if (!(s is Button)) return;
                APIProject.OpenDocument();
            };
        }
    }
}

CONCLUSION

  

Using this technic you can reduce code and organize it in a single place.

 

Anonymous functions can be used to any kind of Events, this sample shows only for the Click event.

 

Happy coding.