Access Controls (Text Boxes and Combo Boxes) added in Runtime to Windows Foam

Question

I am adding User Control to my Main Windows Foam, the User Control consist of Tablelayoutpanel which include 2 Combo Boxes,1 Button and 4 Text Boxes, as shown in the picture below:

How can I access each of these controls as I add more Controls in Runtime Such as this in image below

In my practice I know to access controls which are created in Design Time but I don't know how to access Control which are generated in Runtime.

I tried Button Click event, but It shows Click event of Single button only, how can I access Click Event for multiple button added in Runtime.

Answer 1

Update2:

Do you mean remove the control's parent control?

private void button1_Click_1(object sender, System.EventArgs e)
{
    UserControl1 userControl11 = new UserControl1();
    tableLayoutPanel1.Controls.Add(userControl11);
    foreach (Control item in userControl11.Controls)
    {
        if (item.Name == "button1")
        {
            item.Click += (sender1, e1) =>
            {
                Control childControl = sender1 as Control;
                if (childControl != null && childControl.Parent != null)
                {
                    Control parentControl = childControl.Parent;
                    tableLayoutPanel1.Controls.Remove(parentControl);
                }
            };
        }
    }
}

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Update:

I misunderstood your runtime creation.

In fact, even multiple usercontrols are created at design time. They all have their own names.

You can add events to them using the same method.

private void button1_Click(object sender, EventArgs e)
{
    foreach (Control ctrl in this.userControl12.Controls)
    {
        if (ctrl.Name is "button1")
        {
            Button btn = (Button)ctrl;
            btn.Click += new EventHandler(Button1_Click);
        }
        else if (ctrl.Name is "button2")
        {
            Button btn = (Button)ctrl;
            btn.Click += new EventHandler(Button2_Click);
        }
    }
}
private void Button1_Click(object sender, EventArgs e)
{
    MessageBox.Show("Hello");
}
private void Button2_Click(object sender, EventArgs e)
{
    MessageBox.Show("World");
}

---

This example shows how to add your own events to multiple buttons contained in a usercontrol.

Create a usercontrol as follows:

Create a winform project as follows:

using System;
using System.Drawing;
using System.Windows.Forms;
using WindowsFormsControlLibrary1;

namespace WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            UserControl1 userControl = new UserControl1();
            foreach (Control ctrl in userControl.Controls)
            {
                if (ctrl.Text is "button1")
                {
                    Button btn = (Button)ctrl;
                    btn.Click += new EventHandler(Button1_Click);
                }
                else if (ctrl.Text is "button2")
                {
                    Button btn = (Button)ctrl;
                    btn.Click += new EventHandler(Button2_Click);
                }

            }
            userControl.Location = new Point(0, 0);
            // userControl.Size = new Size(200, 100);
            panel1.Controls.Add(userControl);

        }
        private void Button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Hello");
        }
        private void Button2_Click(object sender, EventArgs e)
        {
            MessageBox.Show("World");
        }
    }
}

---

Using this as an example, you can add individual events to them, or you can add a unified event.

Just find them from the corresponding container.