asp.net mvc - Razor ViewEngine HTML.Checkbox method creates a hidden input. Why? -


I've written the code below on my watch page; 

  @ html.CheckBox ("ChxName", true)   
 And I found the following result;  
  & lt; Input checked "checked" id = "chxname" name = "chxName" type = "checkbox" value = "true" /> & Lt; Input name = "chxname" type = "hidden" value = "false" />   
 Why is there an input element name with the check box?   
 
 
 Unchecked check boxes are not posted, so hidden fields (set as false ) Still allows model binding to work.  
 View the request. Back to the form on the form. If the checkbox is checked, you will see:  
  Chaksnam = true & amp; ChxName = false   
 uses the first binding model.  
 And, if the box is not checked, you will see:  
  ChxName = false

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