C# Using Dropdown Menu To Change Background Color With Switch Statement

Introduction

 

In this article, we discuss using a dropdown menu in C# to change the background color with a switch statement in Unity.

 

Prerequisites

 

Unity environment version 2018.4.19f1

 

Create the Project

 

 

Click on the main camera. The camera Inspector displays Click on Clear Flags Option Select the Solid Color in the scene view.

 

 

First, you have to open the unity3D project. The unity window is like this. Select the GameObject menu in the menu bar. Select UI and pick the Dropdown option.

 

 

Select the canvas and click on the dropdown. The inspector displays Select the Option and Add the colors name in Unity.

 

 

Create the Scripts

 

Right-click on Assets. Select Create >> C# script

 

 

Rename the scripts as ChangeBackgroundColors

 

 

Double click on the ChangeBackgroundColors script. Write the code like shown below:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class ChangeBackgroundColors: MonoBehaviour {
    public Camera cam;
    public Dropdown mydropdown;
    // Update is called once per frame
    void Update() {
        switch (mydropdown.value) {
            case 1:
                cam.backgroundColor = Color.red;
                break;
            case 2:
                cam.backgroundColor = Color.blue;
                break;
            case 3:
                cam.backgroundColor = Color.green;
                break;
        }
    }
}

Save the Program.

 

Create the Empty GameObject

 

Select the Game Object >> Create Empty GameObject.

 

 

Rename the Empty Game Object as DropdownManager

 

 

Drag and drop the ChangeBackgroundColors script onto the Dropdown Manager.

 

 

Click on the Play button. Select a color mode in run time.

 

 

For runtime, select the color red as the background.

 

 

Runtime select the color as blue for the background.

 

 

For runtime, select green as the background.

 

 

Summary 

 

I hope that you understood how to use a C# Dropdown menu to change the background color with a switch Statement in Unity.