Question

我创建了一个ParentForm。从ParentForm的菜单中，我从ChildForm菜单项创建了一个ChildForm。创建ChildForm时，我在ParentForm上禁用了Childform菜单项。我需要设置和引用以在ParentForm上创建ChildForm菜单项关闭ChildForm时启用。

谢谢

的Tamas

Answer 1

public partial class myParent : Form {
      ...
      ...
      public myParent {
             initChildren();
      }
      void initiChildren() {
          myChildAlpha = new ChildForm();
          myChildAlpha.FormClosed += new FormClosedEventHandler(enable_menu)    
      }
      void enable_menu(object sender,FormClosedEventArgs e) {
          //check if sender == ChildForm -> if so enable the proper menu
      } 
}

Answer 2

    ParentForm form;
    public ChildForm(ParentForm _form) //pass ParentForm as Parameter
    {
        InitializeComponent();
        form = _form; //save Parameter to variable form
    }
    //raised when Form was closed
    private void ChildForm_FormClosed(object sender, FormClosedEventArgs e)
    {
        //set item to public modifier in properties window or specify getter and setter, then you can set it set it to enabled again like this
        //Pseudo: form.menu.item.enabled = true;
    }
    //create Instance of ChildForm like this "ChildForm child = new ChildForm(this);"

引用父表单到子表单

2 个答案: