小编Cod*_*ive的帖子

有人能告诉我为什么以下代码不起作用？

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

    private void Form1_Load(object sender, EventArgs e)
    {
        Thread t = new Thread(rtb2);
        t.Start();
    }

    private void rtb2()
    {
        try
        {
            richTextBox1.Text = "1";                
        }
        catch(InvalidOperationException ex)
        {
            MessageBox.Show("HI");
        }            
    }
}