[C#] ใส่ชื่อโชว์ Message Box

โค้ด

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Hello!! "+textBox1.Text);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

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