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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