This library is a layer on top of Friendly, so you must learn that first. But it is very easy to learn.

https://github.com/Codeer-Software/Friendly.Windows

Install Friendly.XamControls from NuGet

PM> Install-Package Friendly.XamControls

https://www.nuget.org/packages/Friendly.XamControls/

Friendly.XamControls defines the following classes.
They can operate the control easily from a separate process.

• XamCalendarDriver
• XamComboEditorDriver
• XamValueEditorDriver
• XamContentPaneDriver
• XamDataGridDriver
• XamDataGridCellDriver
• XamDataGridCheckCellDriver
• XamDataGridComboCellDriver
• XamDataGridTextCellDriver
• XamDataTreeDriver
• XamDataTreeCheckNodeDriver
• XamDataTreeNodeDriver
• XamDataTreeTextNodeDriver
• XamDockManagerDriver
• XamGridDriver
• XamGridCellDriver
• XamGridCheckCellDriver
• XamGridComboCellDriver
• XamGridTextCellDriver
• XamOutlookBarDriver
• XamOutlookBarGroupDriver
• XamRibbonDriver
• XamApplicationMenu2010Driver
• XamApplicationMenu2010ItemDriver
• XamApplicationMenuDriver
• XamToolMenuItemDriver
• XamTabControlDriver
• XamTabItemDriver

//sample  
var process = Process.GetProcessesByName("Target")[0];  
using (var app = new WindowsAppFriend(process))  
{  
    dynamic main = app.Type(typeof(Application)).Current.Window;  
    var _grid = new XamGridDriver(main._grid);
    
    var cell = _grid.GetCell(2, 1);
    cell.EmulateActivate();
    bool isActive = cell.IsActive;
    
    var cellText = _grid.GetCell(2, 0).AsText();
    cellText.EmulateEdit("abc");
    string text = cellText.Text;
    
    var cellCombo = _grid.GetCell(99, 1).AsCombo();
    cellCombo.EmulateEdit(1);
    cellCombo.EmulateEdit("c");
    text = cellCombo.Text;
    int selectedIndex = cellCombo.SelectedIndex;
    
    var cellCheck = _grid.GetCell(99, 2).AsCheck();
    cellCheck.EmulateEdit(false);
    bool checked = cellCheck.IsChecked;
}

https://github.com/Codeer-Software/Friendly.XamControls/tree/master/Project/Test

For other GUI types, use the following libraries:

• For Win32.
  https://www.nuget.org/packages/Codeer.Friendly.Windows.NativeStandardControls/

• For WinForms.
  https://www.nuget.org/packages/Ong.Friendly.FormsStandardControls/

• For WPF.
  https://www.nuget.org/packages/RM.Friendly.WPFStandardControls/

• For getting the target window.
  https://www.nuget.org/packages/Codeer.Friendly.Windows.Grasp/

• For 3d party.
  https://www.nuget.org/packages/Friendly.XamControls/
  https://www.nuget.org/packages/Friendly.C1.Win/
  https://www.nuget.org/packages/Friendly.FarPoint/

If you use PinInterface, you map control simple.
https://www.nuget.org/packages/VSHTC.Friendly.PinInterface/