Answers

• NMackay GBInsider, University mod

  September 2016 edited September 2016 Accepted Answer

  @EBatik

  You can only assign one command to a toolbaritem.

  What your proposing isn't a good idea though as I'm presuming you'd only want to navigate if the save was successful.

  You'd be better calling a method in your view model that does the save and then calls the navigation action in the same relaycommand, it's much more manageable.

  5
• NMackay GBInsider, University mod

  September 2016 edited September 2016

  You can however execute a bound command and raise a clicked event and both will fire but it seems wrong, your executing code in your view model and code behind with no way of controlling in what order the code will execute.

   <custom:CustomTabbedPage.ToolbarItems>
          <ToolbarItem Command="{Binding SendPOCommand}" Order="Primary" Priority="0" Clicked="MenuItem_OnClicked">
            <ToolbarItem.Icon>
              <OnPlatform x:TypeArguments="FileImageSource" iOS="IconSendPO" Android="IconSendPO" WinPhone="Images/IconSendPO.png" />
            </ToolbarItem.Icon>
          </ToolbarItem>
      </custom:CustomTabbedPage.ToolbarItems>
  

  0
• EBatik NLMember ✭✭✭

  September 2016

  @NMackay
  thank you for your reply! I ill try the way you discribed in the first comment and i ll let you know.

  0
• EBatik NLMember ✭✭✭

  September 2016

  @NMackay my code fails ofc! how can i create a command inside a command?Could you help me with that!?

  0
• NMackay GBInsider, University mod

  September 2016 edited September 2016

  @EBatik

  You could just create a second command in your viewmodel and execute it from the command bound to your control if you want to go down that path.

  Here's an example but I don't see why you'd want to do that.

  // This command is bound to the control and gets executed when the toolbar item is clicked.
  public RelayCommand<AppFavourite> SelectFavCommand
          {
              get
              {
                  return _selectFavCommand
                         ?? (_selectFavCommand = new RelayCommand<AppFavourite>(
                             async fav =>
                             {
                                 try
                                 {
                                     // This executes another command 1st
                                     DeleteFavCommand.Execute(fav);
  
                                       // Do logic in the 2nd command
  

  0
• EBatik NLMember ✭✭✭

  October 2016

  @NMackay are you using xlabs?

  0
• NMackay GBInsider, University mod

  October 2016

  No, I don't use XLabs.

  0
• WinterCloud GBMember ✭✭✭

  October 2016

  @NMackay said:
  @EBatik

  You could just create a second command in your viewmodel and execute it from the command bound to your control if you want to go down that path.

  Here's an example but I don't see why you'd want to do that.

  // This command is bound to the control and gets executed when the toolbar item is clicked.
  public RelayCommand<AppFavourite> SelectFavCommand
          {
              get
              {
                  return _selectFavCommand
                         ?? (_selectFavCommand = new RelayCommand<AppFavourite>(
                             async fav =>
                             {
                                 try
                                 {
                                   // This executes another command 1st
                                     DeleteFavCommand.Execute(fav);
  
                                     // Do logic in the 2nd command
  

  Why two commands? Any benefits of doing this?

  Why not just one command pointing to Method1, and Method1 calls Method2,3,4....?

  0
• NMackay GBInsider, University mod

  October 2016

  @WinterCloud

  Exactly, there is no benefit. That was my 1st comment.

  0
• WinterCloud GBMember ✭✭✭

  October 2016

  @NMackay said:
  @WinterCloud

  Exactly, there is no benefit. That was my 1st comment.

  Oh, sorry I went straight to code.

  0
• EBatik NLMember ✭✭✭

  October 2016 Accepted Answer

  @NMackay @WinterCloud it works (one command pointing to Method1, and Method1 calls Method2,3,4) thanks guys!

  5