How Do I Link Two Wpf Windows Using C#

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I have two WPF windows, that is MainWindow and Window1. In MainWindow i have a textbox(textbox1) and a button, in Window1 i have a textbox(textbox2).

What i am trying to accomplish is that when i click the button, whatever is typed in textbox1 is now displayed in textbox2.

my xaml i believe is correct for both windows and i have added the "private void button_click_1....." in my MainWindow.cs. however when ever i try to type the action:

textbox2.Text = textbox1.Text;

it does not recognize textbox2

I am fairly new to WPF and c# so any assistance would be appreciated. Thanks

Posted 25-May-14 20:13pm

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Comments

Sergey Alexandrovich Kryukov 26-May-14 2:30am

This is barely related to WPF, rather to general OOP. It looks like you don't really understand types and instances of types, as well as instance members.
—SA

[no name] 26-May-14 5:55am

Do a search for "pass data between forms" and start studying.

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-05-25T20:32:00

Solution 1

Please see my comment to the question and my past answer: Repeat wpf Datagrid data in another window text boxes[^].

Please learn some OOP basics, otherwise you are going to too advanced stuff without understanding of fundamentals. Eventually, it may end up with a lot of frustration.

—SA

Posted 25-May-14 20:32pm

Sergey Alexandrovich Kryukov

Gul Md Ershad · Answer 2 · 2014-08-13T02:26:00

First, Create two viewModels for both window files.

Define one property which will get and set values from textbox
in each ViewModel.

Create NavigationService.cs class for opening window:
Let NavigationService.cs

Now put following code in that class file.

C#

public void ShowWindow1Screen(Window1ViewModel window1ViewModel)
       {
           Window1= new Window1();
           Window1.DataContext = window1ViewModel)
           Window1.Owner = nicknameView;
           Window1.ShowDialog();
       }

then.

Create instance of NavigationService.cs class MainWindowViewModel file.
then

C#

Window1ViewModel window1ViewModel = new Vindow1ViewModel();
window1ViewModel.Name = MainWindowTextValue;
NavigationService navigationService = new NavigationService();
navigationService.ShowWindow1Screen(window1ViewModel);