01.bool focus_txtbx1, focus_txtbx2;
02.private void button1_Click(object sender, EventArgs e)
03.{
04. if (focus_txtbx1 == true)
05. {
06. this.textBox1.Text = "Focus Textbox1 insert data to textbox 1";
07. focus_txtbx1 = false;
08. }
09.
10. if (focus_txtbx2 == true)
11. {
12. this.textBox2.Text = "Focus Textbox2 insert data to textbox 2";
13. focus_txtbx2 = false;
14. }
15.}
16.
17.private void textBox2_MouseDown(object sender, MouseEventArgs e)
18.{
19. focus_txtbx2 = true;
20.}
21.
22.private void textBox1_MouseDown(object sender, MouseEventArgs e)
23.{
24. focus_txtbx1 = true;
25.}
