/// <summary>
/// this is the effect of pressing the 'add genre' button.
/// it adds the ddl genre as a reference to the song that is being updated
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void AddGenreButton_Click(object sender, EventArgs e)
{
int songID = int.Parse(EditingSongID.Text);
int genreID = int.Parse(GenreToAddDDL.SelectedValue);
GenreToSongController gtos = new GenreToSongController();
try
{
if (songID == -1)
{
Message.Text = "Song not yet created; pleas create the song before adding Genre(s)";
}
else if (genreID == 0)
{
Message.Text = "No Genre has been selected; please select a genre to add";
}
else if (gtos.CheckRefExists(songID, genreID))
{
Message.Text = "Genre has already been added; please select a different genre to add";
}
else
{
gtos.CreateReference(songID, genreID);
LoadEditData();
Message.Text = "The Genre '" + GenreToAddDDL.SelectedItem.ToString() + "' has been sucessfuly added";
//reset the item to 'select...'
GenreToAddDDL.SelectedIndex = 0;
}
}
catch (Exception ex)
{
Message.Text = GetInerException(ex).Message;
}
}
/// <summary>
/// this is for removing and viewing genres of the song that is currently being edited
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void EditingGenres_GridView_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "Delete")
{
e.Handled = true;
int index = Convert.ToInt32(e.CommandArgument);
Label genreIDController = (Label)EditingGenres_GridView.Rows[index].FindControl("EditingGenreID");
Label genreNameController = (Label)EditingGenres_GridView.Rows[index].FindControl("EditingGenre");
GenreToSongController gtos = new GenreToSongController();
try
{
gtos.RemoveReference(int.Parse(EditingSongID.Text), int.Parse(genreIDController.Text));
LoadEditData();
Message.Text = "The Genre '" + genreNameController.Text + "' has been sucessfuly removed";
}
catch (Exception ex)
{
Message.Text = GetInerException(ex).ToString();
}
}
}
private void LoadEditData()
{
ArtistToSongController atos = new ArtistToSongController();
FiletypeController fc = new FiletypeController();
GenreToSongController gtos = new GenreToSongController();
RatingToSongController rtos = new RatingToSongController();
SongController sc = new SongController();
try
{
//reset the ddl so that its on the first one which is 'Select...'
//manualy adding all the rows so that Select... is the first one and Editing FiletypeDDL doesn't get stacking data
DataTable t = new DataTable();
t.Columns.Add("FiletypeID");
t.Columns.Add("Filetype");
t.Rows.Add(new string[] { "0", "Select..." });
foreach (DataRow dr in fc.GetFiletypes().Rows)
{
t.Rows.Add(new string[] { dr.Field <int>("FiletypeID").ToString(), dr.Field <string>("Filetype") });
}
EditingFiletypeDDL.DataSource = t;
EditingFiletypeDDL.DataTextField = "Filetype";
EditingFiletypeDDL.DataValueField = "FiletypeID";
EditingFiletypeDDL.DataBind();
//no song selected
if (EditingSongID.Text == "-1")
{
//clear the song information
EditingSongName.Text = "";
//make sure its on 'select'
EditingFiletypeDDL.SelectedIndex = 0;
//make sure that all of the editing gridviews show emty if there aren't any
EditingArtists_GridView.DataBind();
EditingRatings_GridView.DataBind();
EditingGenres_GridView.DataBind();
//determine which button will be used on the edit/add tab
Update_SongNameAndFiletype.Visible = false;
Create_NewSong.Visible = true;
}
//a song is being edited
else
{
int songid = int.Parse(EditingSongID.Text);
DataTable songT = sc.fetchSong(songid);
EditingSongName.Text = songT.Rows[0].Field <string>("SongName");
//make sure its on the right value
EditingFiletypeDDL.SelectedValue = songT.Rows[0].Field <int>("FiletypeID").ToString();
#region Load and Bind Artists
DataTable artistT = atos.GetArtistToSongInfo(songid);
EditingArtists_GridView.DataSource = artistT;
EditingArtists_GridView.DataBind();
#endregion
#region Load and Bind Ratings
DataTable ratingT = rtos.GetRatingToSongInfo(songid);
EditingRatings_GridView.DataSource = ratingT;
EditingRatings_GridView.DataBind();
#endregion
#region Load and Bind Genres
DataTable genreT = gtos.GetGenreToSongInfo(songid);
EditingGenres_GridView.DataSource = genreT;
EditingGenres_GridView.DataBind();
#endregion
//set the update button to being visable, and turn the add/create button invisable
Update_SongNameAndFiletype.Visible = true;
Create_NewSong.Visible = false;
}
EditingFiletypeDDL.DataBind();
}
catch (Exception ex)
{
Message.Text = GetInerException(ex).ToString();
}
}
