I am dynamically trying to add a button inside a groupbox, however the button stays behind the groupbox tool and can not be seen or can not be clicked. I need my button to be seen and clickable inside of the groupbox. Here is my code:

namespace HarryPotter
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {           
            GroupBox grp = new GroupBox();
            grp.Top = 600;
            grp.Left = 0;
            grp.Text = "Kontroller";
            grp.Size = new Size(600, 400);
            //grp.BackgroundImage = Properties.Resources.hogwartscastle;
            //grp.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
            grp.FlatStyle = FlatStyle.Flat;
            this.Controls.Add(grp);

            Button btn2 = new Button();
            btn2.Size = new Size(40, 40);
            btn2.Top = 580;
            btn2.Left = 0;
            btn2.Parent = grp;
            btn2.BackgroundImage = Image.FromFile(Environment.GetFolderPath(Environment.SpecialFolder.Desktop)   @"\DownArrow.png");
            btn2.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
            grp.Controls.Add(btn2);
            this.Controls.Add(btn2);

        }
    }
}

Here is a screenshot:

CodePudding user response：

First of all, the GroupBox is only 400 pixels tall but the Button has its top at y location 580. So the button is there but its not visible. So either make the groupbox taller or change the btn2.Top. Also you need to create the Click event handler for btn2 with the following: btn2.Click = Btn2_Click then define the Btn2_Click function.

Edit: as Reza pointed out, you need to remove the this.Controls.Add(btn2); line as well since that will remove the button from the group box.