private void menuItem3_Click(object sender, System.EventArgs e) //菜单的CLICK事件.
{
FrmClass MyClass = null; //生成自己的表单
foreach( Form ftemp in this.MdiChildren) //查找当前父表单所有子表单
{
if(ftemp is FrmClass)
{
MyClass = (FrmClass)ftemp;
break;
}
}
if(MyClass==null || MyClass.IsDisposed)
{
MyClass = new FrmClass();
MyClass.MdiParent = this;
}
MyClass.Show();
MyClass.Activate();
}