public void DelItem(Item item)
{
using (SQLiteCommand cmd = new SQLiteCommand(conn))
{
cmd.CommandText = "delete from items where id=@Id;";
cmd.Prepare();
cmd.Parameters.AddWithValue("@Id", item.Id);
cmd.ExecuteNonQuery();
Items.Remove(item);
}
if (item.FileName!=string.Empty)
{
try
{
File.Delete(SomeConst.FILEDIR + item.FileName);
}
catch (System.Exception)
{
System.Windows.Forms.MessageBox.Show("Delete file failed.");
}
}
}
public void SaveItem(Item refItem, Item newItem)
{
refItem.Title = newItem.Title;
refItem.Description = newItem.Description;
refItem.Tagum = newItem.Tagum;
if (refItem.IsChanged())
{
using (SQLiteCommand cmd = new SQLiteCommand(conn))
{
List<string> sList = new List<string>();
if (refItem.IsTitleChanged)
{
sList.Add("title=@Title");
}
if (refItem.IsDescriptionChanged)
{
sList.Add("description=@Description");
}
if (refItem.IsTagumChanged)
{
sList.Add("tagum=@Tagum");
}
cmd.CommandText = "update items set " + string.Join(",", sList) + " where id=@Id";
cmd.Prepare();
cmd.Parameters.AddWithValue("@Id", refItem.Id);
cmd.Parameters.AddWithValue("@Title", refItem.Title);
cmd.Parameters.AddWithValue("@Description", refItem.Description);
cmd.Parameters.Add("@Tagum", System.Data.DbType.Binary).Value = refItem.Tagum;
cmd.ExecuteNonQuery();
refItem.ClearChangeStatus();
}
}
}
public void AddItem(Item item, string path)
{
using (SQLiteCommand cmd = new SQLiteCommand(conn))
{
cmd.CommandText = "insert into items(title,description,file,tagum) values(@Title,@Description,@File,@Tagum);";
cmd.Prepare();
cmd.Parameters.AddWithValue("@Title", item.Title);
cmd.Parameters.AddWithValue("@Description", item.Description);
cmd.Parameters.AddWithValue("@File", item.FileName);
cmd.Parameters.Add("@Tagum", System.Data.DbType.Binary).Value = item.Tagum;
cmd.ExecuteNonQuery();
item.Id = (int)conn.LastInsertRowId;
Items.Add(item);
}
if (item.FileName!=string.Empty)
{
File.Copy(path, SomeConst.FILEDIR + item.FileName);
}
}