Set focus on textbox in WPF

Question

How to set the focus on an TextBox element in WPF  I have this code   txtCompanyID Focusable   true  txtCompanyID Focus         but it is not working   Any idea

User · Answer

txtCompanyID Focusable   true  Keyboard Focus txtCompanyID     msdn      There can be only one element on the   whole desktop that has keyboard focus    In WPF  the element that has keyboard   focus will have IsKeyboardFocused set   to true    You could break after the setting line and check the value of IsKeyboardFocused property  Also check if you really reach that line or maybe you set some other element to get focus after that

User · Answer

Try this    MyTextBox Focus

User · Answer

try FocusManager SetFocusedElement  FocusManager SetFocusedElement parentElement  txtCompanyID

User · Answer

In XAML    lt StackPanel FocusManager FocusedElement   Binding ElementName Box   gt      lt TextBox Name  Box    gt   lt  StackPanel gt

User · Answer

None of this worked for me as I was using a grid rather than a StackPanel   I finally found this example  http   spin atomicobject com 2013 03 06 xaml-wpf-textbox-focus   and modified it to this   In the  Resources  section        lt Style x Key  FocusTextBox  TargetType  Grid  gt           lt Style Triggers gt               lt DataTrigger Binding   Binding ElementName textBoxName  Path IsVisible   Value  True  gt                   lt Setter Property  FocusManager FocusedElement  Value   Binding ElementName textBoxName    gt               lt  DataTrigger gt           lt  Style Triggers gt       lt  Style gt    In my grid definition    lt Grid Style   StaticResource FocusTextBox     gt

User · Answer

In case you haven t found the solution on the other answers  that s how I solved the issue   Application Current Dispatcher BeginInvoke new Action      gt        TEXTBOX OBJECT Focus        System Windows Threading DispatcherPriority Render     From what I understand the other solutions may not work because the call to Focus   is invoked before the application has rendered the other components

User · Answer

In Code behind you can achieve it only by doing this   private void Window Loaded object sender  RoutedEventArgs e                        txtIndex Focusable   true              txtIndex Focus               Note  It wont work before window is loaded

User · Answer

Nobody explained so far why the code in the question doesn t work  My guess is that the code was placed in the constructor of the Window  But at this time it s too early to set the focus  It has to be done once the Window is ready for interaction  The best place for the code is the Loaded event   public KonsoleWindow       public TestWindow         InitializeComponent        Loaded    TestWindow Loaded         private void TestWindow Loaded object sender  RoutedEventArgs e        txtCompanyID Focus

User · Answer

Another possible solution is to use FocusBehavior provided by free DevExpress MVVM Framework    lt TextBox Text  This control is focused on startup  gt       lt dxmvvm Interaction Behaviors gt           lt dxmvvm FocusBehavior  gt       lt  dxmvvm Interaction Behaviors gt   lt  TextBox gt    It allows you to focus a control when it s loaded  when a certain event is raised or a property is changed

[c#] Set focus on textbox in WPF

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