How to get handle to a TextBox control inside window in Window 10

问题

I am working on automation to Windows 10 with C#.
One of the tasks is to write data to a TextBox in window called "Add exclusion".

In order to enter this window:
Open Settings => Update & security => Windows Defender => Add an exclution => Exclude a file extension

I understood that I need to use SendMessage(...) or SetWindowText(...) functions for writing data to a control.
But I need to pass these functions a handle of the control I want to write to.
So I need to use GetDlgItem(hDlg, nIDDlgItem).
The parameter nIDDlgItem is the control ID but I am not able to find the control ID of the TextBox control in the "Add exclusion" window.

I used Spy++ but when I put the target icon I received only "Shell_Dialog" class:

I have only the window handle:

I need the handle of the TextBox control.

EDIT (20.6.2016):
I tried to use the Inspect.exe tool from Windows 10 Kit but when I am placing the curoser on the TextBox control it writes me "Access is denied":

References:
SetText of textbox in external app. Win32 API
Inspect (Inspect.exe) is a Windows-based tool that enables you select any UI element

回答1:

Third alternative is to select parent (ie. dialog window) for your button (ie. it will be of Dialog class), and register for WM_COMMAND messages from it. Then after pressing it you button ID will be displayed as wID: XX in message window.

Source: Using visual studio's spy++ tool:

回答2:

In order to be able to do it I needed to use the Inspect.exe tool with administrator permissions.

Thanks @NineBerry,
After I opened the Inspect.exe as administrator I could see all the details.

来源：https://stackoverflow.com/questions/37912261/how-to-get-handle-to-a-textbox-control-inside-window-in-window-10