How to make main window wait until a newly opened window closes in C# WPF?

Question

I am new to WPF as well as C#, please bear with me. I have a main window which opens up a new window. Now this new window is a prompt whether or not to overwrite a file, and the main window accesses a public variable in the new window to check for the prompt's result. But I can't get the main window processing to wait until the new window closes. ``` Window1 Win = new Window1(); Win.Show(); if (Win.pr_res == 1) { abc.Text = "File to be overwritten"; File.Delete(_destination); Start(); } else { abc.Text = "Operation Aborted"; } ``` I tried adding a while loop checking another public boolean in the main window, but that just hangs the entire program. ``` while(!_closecheck); ``` Any suggestions are welcome.

Accepted Answer

Use ShowDialog instead of `Show` -

```
Win.ShowDialog();
```

From MSDN -

Opens a window and returns only when the newly opened window is closed.

How to make main window wait until a newly opened window closes in C# WPF?

Solution

Problem