private void btnAddSong_Click(object sender, EventArgs e)
{
if (txtSong.Text == null || txtSong.Text.Equals(""))
{
ErrorSong.SetError(txtSong, "Song's name must not be empty!");
return;
}
else
{
ErrorSong.Clear();
listSongs.Items.Add("- " + txtSong.Text);
txtSong.Clear();
txtSong.Focus();
}
}
public bool valid()
{
bool isError = false;
if (txtID.Text.Equals(""))
{
ErrorID.SetError(txtID, "ID must not be empty!");
isError = true;
}
if (txtAlbum.Text.Equals(""))
{
ErrorAlbum.SetError(txtAlbum, "Album must not be empty!");
isError = true;
}
if (txtSinger.Text.Equals(""))
{
ErrorSinger.SetError(txtSinger, "Singer must not be empty!");
isError = true;
}
if (listSongs.Items.Count == 0)
{
ErrorSong.SetError(listSongs, "You must add at least one song");
isError = true;
}
if (isError)
{
return(false);
}
else
{
ErrorID.Clear(); ErrorAlbum.Clear(); ErrorDuration.Clear();
ErrorSinger.Clear(); ErrorSong.Clear();
return(true);
}
}//end of valid()
