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I have been looking for different solutions and when I finally thought I had it, an "Unhandled Exception" appears. I am a student and I am just starting out and I wanted to see if you could offer me alternatives.

The problem is the following:

"Design a program that determines the amount to be paid and the preview gift for a customer of the shop.

In addition, when the form is executed, it must show a photo of a client, and then when you click
The photo must show a photo of another client up to 3 photos."

What I have tried:

This is the code that I have been doing but I keep getting "unhandled exception"
private void Form1_Load(object sender, EventArgs e)
            picfoto.Image = Image.FromFile("Foto1.jpg");
            a = 1;

 private void picfoto_Click(object sender, EventArgs e)
            switch (a)
                case 1:
                    picfoto.Image = Image.FromFile(Application.StartupPath + "Foto2.png");
                    a = a + 1;
                case 2:
                    picfoto.Image = Image.FromFile(Application.StartupPath + "Foto3.png");
                    a = a + 1;
                case 3:
                    picfoto.Image = Image.FromFile(Application.StartupPath + "Foto4.png");
                    a = 1;

Updated 8-Mar-22 9:45am
PIEBALDconsult 8-Mar-22 14:16pm
Well, what is the Exception which is unhandled?
Estephany Enciso Chang 8-Mar-22 14:20pm
the code executes perfectly fine until it arrives:

picphoto.Image = Image.FromFile(Application.StartupPath + "Photo1.jpg");

i got rid of the "Application.StartupPath + " and it runs fine i think that is the problem

1 solution

It is safer to use:
Path.Combine(Application.StartupPath, "Foto2.png")

It might also be needed to dispose of the PictureBox Image, see answer here:
c# - Dispose of a pictureBox image without losing the pictureBox - Stack Overflow[^]

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