Detect Start and Stop Editing UITextView

Question

How can I call some code upon entering a UITextView (user taps to edit it) and leaving the view (user taps to leave it)?

Appreciate any help.

Answer 1

txtviewaddress.text="Address"

txtViewAddress.TextColor = UIColor.LightGray;
txtViewAddress.ShouldBeginEditing += (textView) =>
        {
 txtViewAddress.Text = "";
            txtViewAddress.TextColor = UIColor.Black;
            return true;
};
txtViewAddress.ShouldEndEditing += (textView) =>
        {
            if (textView.Text == "")
            {
                txtViewAddress.Text = " Address";
                txtViewAddress.TextColor = UIColor.LightGray;

            }
            return true;
        };