c# - WPF: Textbox + Slider with min values -


i have textbox binded slider, , slider has minimum value set.

the problem if start entering values in textbox out of min - automatically transferred min. e.g. if set min 4, , want type 12, once press 1, it's changed 4 in textbox, , can't enter 12, instead 42. if start typing 4 or 5 (say 42, or 51, etc.) ok.

is there way defer check of min until after user has pressed enter ?

here's xaml:

<textbox text="{binding elementname=maxvalue, path=value, updatesourcetrigger=propertychanged}" textalignment="center" verticalcontentalignment="center" width="30" height="25" borderbrush="transparent"></textbox> <slider value="{binding totalsize}" maximum="{binding maxmaxbackupsize}" minimum="{binding minbackupsize}" tickplacement="bottomright" tickfrequency="2" issnaptotickenabled="true" name="maxvalue"></slider>

set updatesourcetrigger property lostfocus , press tab:

<textbox text="{binding elementname=maxvalue, path=value, updatesourcetrigger=lostfocus}" textalignment="center" verticalcontentalignment="center" width="30" height="25" borderbrush="transparent"></textbox>

or press enter , handle previewkeydown event this:

private void textbox_previewkeydown(object sender, keyeventargs e) {     if (e.key == key.enter)     {         e.handled = true;         textbox textbox = sender textbox;         textbox.movefocus(new traversalrequest(focusnavigationdirection.next));     } }

or explicitly update source property suggested @clemens:

private void textbox_previewkeydown(object sender, keyeventargs e) {     if (e.key == key.enter)     {         e.handled = true;         textbox textbox = sender textbox;         bindingexpression = textbox.getbindingexpression(textbox.textproperty);         be.updatesource();     } }

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