validation - WPF TextBox Validating results ToolTip -

Experiment with WPF valid input, I tried to use ToolTip to display results of text box input validation, Like:

  & lt; Style.Triggers & gt; & Lt; Trigger Property = "Validation. HesError" Value = "true" & gt; & Lt; Setter Property = "Tooltip" value = "{Compulsive Relative Sorce = {Relative Aces Self}, path = (Validation. Arrays) [0] .RescueSource}" /> & Lt; / Catalyst & gt; & Lt; /Style.Triggers>  

This was very uncomfortable for me, that tooltip is not shown in the text of the text in the text box, while validating the error at the moment, but only after the mouse pointer, the intentional text The box is put on.

This violates the user's expectations regarding the applicability of the UI, so when I get the verification verification error, the validation error results have been entered in the separate text block that appears automatically and instantly .

> But maybe I'm wrong and do not use tooltips properly? Perhaps the setting tooltip property setting is enabled on the text box to be deliberately displayed without the mouseover?

Edit (added):

In order to display the results of the text box to use the toolbox, the input is found in the Microsoft MSDN document:

Do you use tooltips to show verification errors? If so, how does it come to the fact that the user can never see it (if he does not predict the rotation of a mouse on a text box)?

For form validation, your text blocking idea looks very good, apart from that you have a lot of control when displayed through your full control.