I am getting error on following lines of code...plz help.
Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
string order1= string.Format ("exec a_add_user '{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}','{9}','{10}'",TextBox_first_name.Text ,TextBox_last_name.Text ,TextBox_user_name.Text ,TextBox_password.Text ,DropDownList_telephone_code.SelectedValue +TextBox_telephone_no.Text ,DropDownList_mobile_code.SelectedValue +TextBox_mobile_no.Text ,RadioButtonList_gender.SelectedValue ,DropDownList_country.SelectedValue ,DropDownList_city.SelectedValue ,TextBox_address.Text);
{10}which, is zero based, argument 11.