Problem in copying the text from the form to another

Question

I have a problem in the attached file which I want to copy text from a text box of second form and show it in the message of first form .. The problem is that the message be empty .. How can copy the text of the message to the second form to first form

This link

http://www.gulfup.com/?RFKl0N

Vulpes · Answer

Well ideally you need to handle the textbox's Leave event so that you can wait for the user to finish typing before transferring the text to Form1: private void button2_Click(object sender EventArgs e) { Form2 ff = new Form2(); ff.textBox1.Leave += form2_textBox1_Leave; ff.Show(); } // add this handler 'manually' not through the VS designer // to Form1 private void form2_textBox1_Leave(object sender EventArgs e) { TextBox tb = (TextBox)sender; if (tb.Text.Length > 0) { MessageBox.Show(tb.Text); } } However as Form2 stands this won't work because the textbox is the only control on the form and so focus never leaves it. You could handle the textbox's TextChanged event instead but if you do this then the MessageBox will pop up as each character is typed! So if you're going to do this then I'd add a label to Form1 and write to that: private void button2_Click(object sender EventArgs e) { Form2 ff = new Form2(); ff.textBox1.TextChanged += form2_textBox1_TextChanged; ff.Show(); } // add this handler 'manually' not through the VS designer // to Form1 private void form2_textBox1_TextChanged(object sender EventArgs e) { TextBox tb = (TextBox)sender; label1.Text = tb.Text; }