c# - WPF multiple checkbox check/uncheck -

i have 4 checkboxes 1 check , other 3 subcheckboxes. wanted check 3 subcheckboxes when check check , when deselect 1 check box main checkbox check unchecked only.

<window x:class="checkboxwpf.mainwindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         title="mainwindow"         height="350"         width="525">    <grid name="grdone">     <checkbox content="check"               checked="checkbox1_checked"               unchecked="checkbox1_unchecked"               height="16"               horizontalalignment="left"               margin="39,23,0,0"               name="checkbox1"               verticalalignment="top">     </checkbox>     <checkbox content="one"               unchecked="checkbox2_unchecked"               ischecked="{binding path=ischecked, elementname=checkbox1, mode=twoway}"               height="16"               horizontalalignment="left"               margin="117,67,0,0"               name="checkbox2"               verticalalignment="top" />     <checkbox content="two"               unchecked="checkbox3_unchecked"               ischecked="{binding path=ischecked, elementname=checkbox1, mode=twoway}"               height="16"               horizontalalignment="left"               margin="118,103,0,0"               name="checkbox3"               verticalalignment="top" />     <checkbox content="three"               ischecked="{binding path=ischecked, elementname=checkbox1, mode=twoway}"               height="16"               horizontalalignment="left"               margin="117,145,0,0"               name="checkbox4"               verticalalignment="top" />     <checkbox content="four"               ischecked="{binding path=ischecked, elementname=checkbox1, mode=twoway}"               height="16"               horizontalalignment="left"               margin="118,190,0,0"               name="checkbox5"               verticalalignment="top" />   </grid> </window> 

 public partial class mainwindow : window     {         public mainwindow()         {             initializecomponent();          }          private void checkbox1_checked(object sender, routedeventargs e)         {             if (checkbox1.ischecked == true)             {                 checkbox2.ischecked = true;                 checkbox3.ischecked = true;             }         }          private void checkbox1_unchecked(object sender, routedeventargs e)         {             //if (checkbox1.ischecked == false)             //{             //    checkbox2.ischecked = false;             //    checkbox3.ischecked = false;             //}         }          private void checkbox2_unchecked(object sender, routedeventargs e)         {             if (checkbox2.ischecked == false)             {                 checkbox1.ischecked = false;             }         }          private void checkbox3_unchecked(object sender, routedeventargs e)         {             if (checkbox3.ischecked == false)             {                 checkbox1.ischecked = false;             }         }     } 

my checkbox grid looks as:

 <grid name="grdone">     <checkbox content="check" height="16" horizontalalignment="left" margin="24,44,0,0" name="checkbox1" verticalalignment="top" checked="checkbox1_checked" unchecked="checkbox1_unchecked" />     <checkbox content="one" height="16" horizontalalignment="left" margin="64,77,0,0" name="checkbox2" verticalalignment="top" checked="checkbox1_checked" unchecked="checkbox1_unchecked" />     <checkbox content="two" height="16" horizontalalignment="left" margin="64,99,0,0" name="checkbox3" verticalalignment="top" unchecked="checkbox1_unchecked" checked="checkbox1_checked" />     <checkbox content="three" height="16" horizontalalignment="left" margin="64,121,0,0" name="checkbox4" verticalalignment="top" checked="checkbox1_checked" unchecked="checkbox1_unchecked" />     <checkbox content="four" height="16" horizontalalignment="left" margin="64,143,0,0" name="checkbox5" verticalalignment="top" checked="checkbox1_checked" unchecked="checkbox1_unchecked" /> </grid> 

and have 2 events, 1 checked , unchecked:

bool m_bchkupdating = false; 

bool m_bunchkupdating = false;

private void checkbox1_checked(object sender, routedeventargs e) {     checkbox chk = (checkbox)sender;      if (!m_bchkupdating)     {         m_bchkupdating = true;         switch (chk.name)         {             case "checkbox1":                 checkbox2.ischecked = true;                 checkbox3.ischecked = true;                 checkbox4.ischecked = true;                 checkbox5.ischecked = true;                 break;             default:                 //  chk.ischecked = true;                 if (checkbox2.ischecked == true &&                     checkbox3.ischecked == true &&                     checkbox4.ischecked == true &&                     checkbox5.ischecked == true)                 {                     checkbox1.ischecked = true;                 }                 else                 {                     checkbox1.ischecked = false;                 }                 break;         }         m_bchkupdating = false;     }  }  private void checkbox1_unchecked(object sender, routedeventargs e) {     checkbox chk = (checkbox)sender;     if (!m_bunchkupdating)     {         m_bunchkupdating = true;          switch (chk.name)         {             case "checkbox1":                 checkbox2.ischecked = false;                 checkbox3.ischecked = false;                 checkbox4.ischecked = false;                 checkbox5.ischecked = false;                 break;             default:                 // chk.ischecked = false;                 if (checkbox2.ischecked == false ||                     checkbox3.ischecked == false ||                     checkbox4.ischecked == false ||                     checkbox5.ischecked == false)                 {                     checkbox1.ischecked = false;                 }                 else                 {                     checkbox1.ischecked = true;                 }                 break;         }          m_bunchkupdating = false;     } }