How to “get” WPF PART_EditableTextbox combo box because combobox is not getting highlighted?

Question

My WPF combo table is populated with a different set of rows every click of a button. There are other controls in the window. Combobox is the "first" (top) in the window, but the text is not highlighted. When the user enters the controls, the text MUST be selected, but when he is the first in the window, it is not.

Perhaps I need to forcefully select the selection on a separate control for text fields inside myself, but how to do it? It seems that I could not find the internal "structure" of this control. Can anyone help here?

Jack

Answer 1

TextBox Combobox,

TextBox TxtBox = (TextBox)myCombo.Template.FindName("PART_EditableTextBox", myCombo); 

Answer 2

, , FrameworkElement.FindName - combobox, .

, .Focus() ? , , , .

- ComboBox , , .