wpf列表框项目从另一个wpf窗口添加

Question

Does anyone know how to add items to the WPF Listbox (window created on blend) from another WPF window ?

I have the following codes

mainpage mp = new mainpage();
        mp.listbox1.Items.Add(namebox.Text);

Thank you guys

Answer 1

two solutions:

1. Create a constructor with parameters and add them in the constructor

   mainpage mp = new mainpage(namebox.Text);

public mainpage(string newItem){ this.listbox1.Items.Add(namebox.Text); }

1. Make the list public and access the list

Answer 2

You can use the Application -class in System.Windows -namespace. Use

System.Windows.Application app = System.Windows.Application.Current;
System.Windows.WindowCollection wincol = app.Windows;
//iterate through collection and find your window

Of course, you'll Need to take care of threading, as usually every window is created in ist own thread. See MSDN for further reference.