private void 列车信息查询ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
QueryForm form = new QueryForm();
form.Show();
}
private void 列车信息查询ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide(); //隐藏当前窗体
QueryForm queryForm = new QueryForm(); //新建查询窗体对象
queryForm.Show(); //打开查询窗体
}