how to use softkeyboard in wpf of dotnet8 ?

I use the code throw an exception
```
string file = "C:\\Program Files\\Common Files\\microsoft shared\\ink\\TabTip.exe";

if (!System.IO.File.Exists(file))
return;
Process.Start(file);
```
the exception content:
```
An error occurred trying to start process 'C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe' with working directory 'E:\Github Sources\MyLogViewer\src\KeyTextBoxApp\bin\Debug\net6.0-windows'. 请求的操作需要提升。
```

the exception don't tell me method.