Hello, everyone! Today, we’ll be discussing a clever solution to a common problem in Windows Forms applications. Have you ever wanted to dynamically change the image of a button without relying on image names at runtime? Well, you’re in the right place!
In this code snippet, we’ll explore how to seamlessly switch between two images for a button, improving user interaction. The secret lies in using global Bitmap objects to handle these changes.
C# Code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp4 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } Bitmap bmpAccept = Properties.Resources.accept; Bitmap bmpReject = Properties.Resources.reject; private void Form1_Load(object sender, EventArgs e) { button1.Image = bmpAccept; button1.Text = "Accept All"; } private void button1_Click(object sender, EventArgs e) { if(button1.Image == bmpAccept) { button1.Image = bmpReject; button1.Text = "Reject All"; } else { button1.Image = bmpAccept; button1.Text = "Accept All"; } } } } |
To solve the button image change problem, we define two global Bitmap objects: bmpAccept and bmpReject. These images represent ‘Accept’ and ‘Reject’ actions.
In the Form1_Load event, we initially set the Image property of button1 to bmpAccept and change the button’s text to ‘Accept All.’ This is the default state when the form is loaded.
Now, let’s delve into the magic of the button1_Click event handler. When the user clicks the button, this code checks the current image of button1. If it’s bmpAccept, it changes the image to bmpReject and updates the text to ‘Reject All.’ If not, it reverts the image and text back to ‘Accept All’.
So, there you have it! This code provides an elegant solution to the issue of dynamically changing button images without needing image names. By using global Bitmap objects, we can seamlessly switch between ‘Accept All’ and ‘Reject All’ states based on user interaction.
If you found this solution helpful and want more coding tips and tricks, don’t forget to like this video, subscribe to my channel, and share your thoughts in the comments below. Stay tuned for more coding tutorials coming your way!
Hello, I am kind of new with this programming stuff, about 2 years or so, but I know how to do some programming. Anyway, I have a WinForm project I am working on that has 2 buttons. I have 2 images for each button and they are stored in Properties.Resources. On the code-behind I made bitmaps and gave them different names, just like you did at the top. I put in the form_load the buttons with the image names I wanted for the buttons and already assigned to. In button1_Click event, I added “if button1 == ‘image name that is created at the top and in design'” Then I added below it what to do if it is that image. Well when I build and run it, it bypasses the “if” statement and when I hover above the image name it says its a “System.Drawing.Image” and when I hover above the button it says the same thing. When I hover above “==” it says the name of the image I put but beside that it says “false”. I have everything exactly the same as what you have with my own names but it will not work. Did they change something in visual studio that now you can not do that?