private static bookSearch _instance = null; // 单例模式
public static bookSearch CreateInstance()
{
if (_instance == null)
{
_instance = new bookSearch();
}
return(_instance);
}
private void 书籍查询ToolStripMenuItem_Click(object sender, EventArgs e)
{
bookSearch BookSearch = new bookSearch();
BookSearch.ShowDialog();
textBox1.Text = Common.Text;
Common.Text = "";
}
private void bookSearch_FormClosing(object sender, FormClosingEventArgs e)
{
bkID = -1;
_instance = null;
this.Dispose();
}