/// <summary> /// Manipulate cursor position when deleting characters from textbox equation /// </summary> private void TextEquationDelete() { posCursor = TextBoxEquation.SelectionStart; if ((posCursor - 1) >= 0) { TextBoxEquation.Text = TextBoxEquation.Text.Remove(posCursor - 1, 1); TextBoxEquation.SelectionStart = posCursor - 1; } else { TextBoxEquation.SelectionStart = 0; } TextBoxEquation.Focus(); }
/// <summary> /// Method to focus to textbox equation /// </summary> private void InputTextFocus() { TextBoxEquation.Focus(); }
/// <summary> /// CE button click (delete all written equation on textbox) /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void ButtonCE_Click(object sender, EventArgs e) { TextBoxEquation.Text = ""; TextBoxEquation.Focus(); }