c# - Change TextBox text and focus via CheckBox in XAML -
when check or uncheck checkbox, want clear textbox , set focus. implemented using code-behind.
my xmal:
<checkbox x:name="checkbox1" checked="checkbox1_checked" unchecked="checkbox1_checked" /> <textbox x:name="textbox1" text="hello" /> my c#:
private void checkbox1_checked(object sender, routedeventargs e) { textbox1.text = ""; textbox1.focus(); } is possible in xaml?
use data triggers. work creating binding regular property, monitored changes.
for instance, consider following example:
<window x:class="wpftutorialsamples.styles.styledatatriggersample" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" title="styledatatriggersample" height="200" width="200"> <stackpanel horizontalalignment="center" verticalalignment="center"> <checkbox name="cbsample" content="hello, world?" /> <textblock horizontalalignment="center" margin="0,20,0,0" fontsize="48"> <textblock.style> <style targettype="textblock"> <setter property="text" value="no" /> <setter property="foreground" value="red" /> <style.triggers> <datatrigger binding="{binding elementname=cbsample, path=ischecked}" value="true"> <setter property="text" value="yes!" /> <setter property="foreground" value="green" /> </datatrigger> </style.triggers> </style> </textblock.style> </textblock> </stackpanel> </window> in example, have checkbox , textblock. using datatrigger, bind textblock ischecked property of checkbox. supply default style, text "no" , foreground colour red, , then, using datatrigger, supply style when ischecked property of checkbox changed true, in case make green text saying "yes!" (as seen on screen shot).
you can find more in here.
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