public GenresViewModel(Genre genre)
{
this.Genre = genre;
}
public Genre[] GetGenres()
{
Genre[] genres = null;
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.Append("SELECT g.genreid, g.genre1 FROM tunesEntities.titel AS a");
stringBuilder.Append(" INNER JOIN tunesEntities.genre AS g ON a.genreid = g.genreid");
stringBuilder.Append(" INNER JOIN tunesEntities.lieder AS t ON a.TitelID = t.TitelID");
stringBuilder.Append(" WHERE t.Liedpfad IS NOT NULL");
stringBuilder.Append(" GROUP BY g.genreid, g.genre1");
stringBuilder.Append(" ORDER BY g.genre1");
using (System.Data.EntityClient.EntityConnection entityConnection =
new System.Data.EntityClient.EntityConnection(this.ConnectionString))
{
try
{
entityConnection.Open();
using (EntityCommand entityCommand = entityConnection.CreateCommand())
{
List<Genre> genreCollection = null;
entityCommand.CommandText = stringBuilder.ToString();
// Execute the command.
using (EntityDataReader dataReader =
entityCommand.ExecuteReader(System.Data.CommandBehavior.SequentialAccess))
{
// Start reading results.
while (dataReader.Read())
{
IDataReader dataR = dataReader;
if (genreCollection == null)
{
genreCollection = new List<Genre>();
}
Genre genre = new Genre
{
Id = dataReader.GetInt32("genreid", false, 0),
Name = dataReader.GetString("genre1", false, string.Empty)
};
genreCollection.Add(genre);
}
}
if (genreCollection != null)
{
genres = genreCollection.ToArray();
}
}
}
finally
{
entityConnection.Close();
}
}
return genres;
}
