private void listView1_MouseDoubleClick(object sender, MouseEventArgs e)
 {
     if (e.Button == MouseButtons.Left)
     {
         if (listView1.SelectedItems.Count == 0)
         {
             return;
         }
         PMSRefDBConnection refdbc = listView1.SelectedItems [0].Tag as PMSRefDBConnection;
         using (DBRefStructForm dbrf = new DBRefStructForm()) {
             dbrf.RefDBConnection = refdbc;
             if (dbrf.ShowDialog() == DialogResult.OK)
             {
                 listView1.SelectedItems [0].Tag = dbrf.RefDBConnection;
                 //SetSelectObj(listView1.SelectedItems[0].Tag);
                 SetModified();
             }
         }
     }
 }
        private void toolStripButton_AddNew_Click(object sender, EventArgs e)
        {
            using (DBRefStructForm dbrf = new DBRefStructForm()) {
                if (dbrf.ShowDialog() == DialogResult.OK)
                {
                    NewDBSourceForm form = new NewDBSourceForm();
                    form.SDForm = this;
                    if (form.ShowDialog() == DialogResult.OK)
                    {
                        PMSRefDBConnectionObj source = new PMSRefDBConnectionObj();
                        source.StrName         = form.sourceName;
                        source.StrDescription  = form.description;
                        source.RefDBConnection = dbrf.RefDBConnection;
                        switch (dbrf.SelectDBType)
                        {
                        case RefDBType.MSSqlServer:
                            InsertSource(source);
                            break;

                        case RefDBType.MSAccess:
                            InsertSource(source);
                            break;

                        case RefDBType.Oracle:
                            InsertSource(source);
                            break;

                        case RefDBType.OleDB:
                            InsertSource(source);
                            break;

                        default:
                            break;
                        }
                        SetModified();
                    }
                }
            }
        }