How to change text box text by click on button

Question

Hello I am beginner in asp.net webforms and i want to copy text of textbox in another textbox when i click in button

my code is:

protected void Button2_Click(object sender, EventArgs e)
{
    TextBox15.Text = TextBox6.Text;
}

when i fill TextBox6 and click button nothing show in TextBox15

Answer 1

Try to use IsPostBack property in the pade_load event handler to prevent re-validation of the page every time you click the button.

if (!IsPostBack)
{
    //do nothing
}

By the way code of your button click will remain as it is, dont change anything of it, just write the above code on the page load.

I hope it helps