c# - How to stop the Button Command execution from its Click event WPF -

is there way stop button command execution based on condition on click event?

actually want have confirmation popup on of button click in our application. make general solution, have done following:

1. i have extension of wpf button class call appbarbutton contains dependency properties.
2. i have 2 more properties below: isactionconfirmationrequired , confirmationactioncommand.

if isactionconfirmationrequired on left button cick event opening confirmation popup.

is there way avoid creating new confirmationactioncommand, , use same command property of button? problem getting if set command, on button click if user not confirmed action still button command execute.

c#:

public class appbarbutton : button {     public appbarbutton()     {         this.click += appbarbutton_click;     }      private void appbarbutton_click(object sender, routedeventargs e)     {         button button = sender button;         if (button == null || isactionconfirmationrequired == false || confirmationactioncommand == null)             return;          const string defaultmessage = "do want {0}";          string confirmationpopupmessage = string.isnullorempty(actionconfirmationmessage)           ? debugformat.format(defaultmessage, button.content)           : actionconfirmationmessage;          confirmationdailogdetails confirmationdailogdetails = new confirmationdailogdetails         {             message = confirmationpopupmessage,             actionname = button.content.tostring(),             template = button.template,             actioncommand = confirmationactioncommand         };          //instead of confirmationactioncommand want use base.command         confirmationdailog dialog = new confirmationdailog(confirmationdailogdetails)         {             placementtarget = button,             isopen = true         };     }      public static readonly dependencyproperty isactionconfirmationrequiredproperty =         dependencyproperty.register("isactionconfirmationrequired", typeof(bool), typeof(appbarbutton));      public static readonly dependencyproperty actionconfirmationmessageproperty =         dependencyproperty.register("actionconfirmationmessage", typeof(string), typeof(appbarbutton));      public static readonly dependencyproperty confirmationactioncommandproperty =        dependencyproperty.register("confirmationactioncommand", typeof(icommand), typeof(appbarbutton));      /// <summary>     /// gets or sets flag show confirmation popup on before taking action on app bar button click.     /// required set command in tag property of app bar button not in command property, required command fire when user     /// confirms , click on action button on confirmation popup.     /// </summary>     public bool isactionconfirmationrequired     {         { return (bool)getvalue(isactionconfirmationrequiredproperty); }         set { setvalue(isactionconfirmationrequiredproperty, value); }     }      /// <summary>     /// gets or sets confirmation message in confirmation popup  before taking action on app bar button click.     /// </summary>     public icommand confirmationactioncommand     {         { return (icommand)getvalue(confirmationactioncommandproperty); }         set { setvalue(confirmationactioncommandproperty, value); }     } } 

xaml:

<controls:appbarbutton x:key="withdrawall"                        appbarorder="1"                        pageindex="1"                        appbarorientation="left"                        content="withdraw" isactionconfirmationrequired="true"                        confirmationactioncommand="{binding withdrawallcommand}"                        template="{staticresource deletecircleicon}" /> 

please suggest something. not able find anything. tried canexecute false, make button disable no use. simple dont want make command, , developer use appbarbutton need set confirmationactioncommand not normal command.

if correctly understand, want confirm user's action , execute command stored in buttonbase.command property.

to achieve remove confirmationactioncommand property , use onclick method instead of click event. in overriden onclick method call base method execute command command property if user confirmed action or there no confirmation required.

public class appbarbutton : button {     public static readonly dependencyproperty isactionconfirmationrequiredproperty =         dependencyproperty.register("isactionconfirmationrequired", typeof(bool), typeof(appbarbutton));      public static readonly dependencyproperty actionconfirmationmessageproperty =         dependencyproperty.register("actionconfirmationmessage", typeof(string), typeof(appbarbutton));      public bool isactionconfirmationrequired     {         { return (bool)getvalue(isactionconfirmationrequiredproperty); }         set { setvalue(isactionconfirmationrequiredproperty, value); }     }      public string actionconfirmationmessage     {         { return (string)getvalue(actionconfirmationmessageproperty ); }         set { setvalue(actionconfirmationmessageproperty , value); }     }      protected override void onclick()     {         bool confirmed = true;          if (isactionconfirmationrequired)         {             confirmationdailogdetails confirmationdailogdetails = new confirmationdailogdetails             {                 message = confirmationpopupmessage,                 actionname = button.content.tostring(),                 template = button.template,                 actioncommand = confirmationactioncommand             };              confirmationdailog dialog = new confirmationdailog(confirmationdailogdetails)             {                 placementtarget = button,                 isopen = true             };              // set confirmed here              // if set dialogresult property in confirmationdailog class             // confirmed = dialog.showdialog().value;         }          // if there no confirmation requred or if user have confirmed action         // call base method execute command if exists.         if (confirmed)         {             base.onclick();         }     } }