/// <summary>
/// 打开人员管理窗体
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void tsmiPersonManager_Click(object sender, EventArgs e)
{
FrmPerson frm = FrmPerson.GetSingleton();
frm.MdiParent = this; //指定打开的子窗体的父容器为当前主窗体
frm.Show();
frm.Activate();
}
/// <summary>
/// 单例模式，返回单个窗体对象
/// </summary>
/// <returns></returns>
public static FrmPerson GetSingleton()
{
//if(frm==null || frm.IsDisposed)
if (frm == null)
{
frm = new FrmPerson();
}
return(frm);
}
public FrmArea(FrmPerson frm)
{
InitializeComponent();//一定要记得调用初始化窗体控件的方法
//MessageBox.Show("1234567890");
this.frm = frm;
}
/// <summary>
/// 窗体关闭的时候释放对象
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void FrmPerson_FormClosing(object sender, FormClosingEventArgs e)
{
frm = null;
}