make enter button of textbox - wpf

Question

i have textbox multi way to fill it
i can fill it from keyboard normally and the other way by clicking button i created on forum something like calculator
when i click button 1 the textbox fill by number 1 and so
and i have button name and work should be like enter key
i have event keydown to send the value i fill it on the text box and work fine
but i need the button that called enter work as the event keydown of the textbox
in short word i need to use touchscreen to enter number to textbox and button to send the value of the textbox to my work

Answer 1

If you want to execute the same code at two different occasions you should put your code in a separate method and then call that at will.
By dividing your code like this you improve both readability and debuggability, and you make your code easier to understand and update.
Here's a brief example:
Private Sub TextBox1_KeyDown(sender As Object, e As System.Windows.Input.KeyEventArgs) Handles TextBox1.KeyDown
If e.Key = Key.Enter Then
UpdateStatus("Enter was pressed.") 'Call custom method.
End If
End Sub
Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
UpdateStatus("Button1 was pressed. Hello World!") 'Call custom method.
End Sub
Private Sub UpdateStatus(ByVal Text As String) 'Custom method declaration.
TextBox1.Text = Text
'In here is where you'd put your code.
End Sub