C# winform form之间传值(本人亲测)（2）

private void btn_father_Click(object sender, EventArgs e)
{
Child child = new Child();
child.child_text = tb_father.Text;
child.ShowDialog();
}

public string child_text { get; set; }

private void btn_child_Click(object sender, EventArgs e)
{
child_text = tb_child.Text;
this.Close();
}

private void Child_Load(object sender, EventArgs e)
{
tb_child.Text = child_text;
}

<span style="font-size:24px;"> private void btn_father_Click(object sender, EventArgs e)
{
Child child = new Child();
child.ShowDialog();
tb_father.Text = child.child_text;
}</span>

<span style="font-size:24px;"> public string child_text { get; set; }

private void btn_child_Click(object sender, EventArgs e)
{
child_text = tb_child.Text;
this.Close();
}</span>