how to put focus on TextBox when the form load?

Question

I have in my C# program textBox

I need that when the program start, the focus will be on the textBox

I try this on Form_Load:

MyTextBox.Focus         


        

Answer 1

The reason you can't get it to work is because the Load event is called before the form is drawn or rendered.

It like telling a pizza place how to make your pizza, and then asking them to send you a picture of how much pepperoni is on your pizza before they made it.

using System;
using System.Windows.Forms;

namespace Testing
{
    public partial class TestForm : Form
    {
        public TestForm()
        {
            InitializeComponent();

            Load += TestForm_Load;

            VisibleChanged += TestForm_VisibleChanged;

            Shown += TestForm_Shown;

            Show();

        }

        private void TestForm_Load(object sender, EventArgs e)
        {
            MessageBox.Show("This event is called before the form is rendered.");
        }

        private void TestForm_VisibleChanged(object sender, EventArgs e)
        {
            MessageBox.Show("This event is called before the form is rendered.");
        }

        private void TestForm_Shown(object sender, EventArgs e)
        {
            MessageBox.Show("This event is called after the form is rendered.");
            txtFirstName.Focus();
        }
    }
}