HI, ALL...
I find the MaskedTextBox combine DataBindings very serious problem......I set the MaskedTextBox is ##/##/####......
In Main page i use MenuStrip.... In first open the form ,MaskedTextBox is __/__/____ ,ok .... but i enty the number in this and
clear all number, in this time, i want to next control , it can't go to , only hold my cursor in this control
(like use Validating e.Cancel = True but i no use ....), i find combine DataBindings will display this problem ...
how can i do ? After , i close the form , and again open .......the MaskedTextBox change to / / in second time.....

In Form_load
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MskEffdate.DataBindings.Add("text", QuohdrBindingSource, "effdate", True, DataSourceUpdateMode.OnPropertyChanged)


In Form_closing
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MskEffdate.DataBindings.Clear()