小编use*_*227的帖子

程序在adapter.Fill(datatable)给出错误的行停止:oleDbException为Unhandled:没有给出一个或多个必需参数的值.

当我将SQL复制到访问中时,没有给出错误..

SQL:

public static List<Movie> AllMoviesSameActor(string lastName)
{
   string command;
   command = "SELECT movieId, name, headActor, Director, ReleaseDate, lenghtMin"
           + "FROM Movies" +
            " WHERE headactor =  " + lastName ;
   OleDbDataAdapter adapter = new OleDbDataAdapter(command, connectionString);
   DataTable datatable = new DataTable();
   adapter.Fill(datatable);

   List<Movie> list= new List<Movie>();
   for (int i = 0; i < datatable.Rows.Count; i++)
   {
      Movie movie = new Movie();
      movie.movieId = datatable.Rows[i].Field<int>("movieId");
      movie.name = datatable.Rows[i].Field<string>("name");
      movie.headActor = datatable.Rows[i].Field<string>("headActor");
      movie.director = datatable.Rows[i].Field<string>("director");
      movie.releaseDate = datatable.Rows[i].Field<DateTime>("releaseDate"); …