sample-customaction-list.xml

<?xml version="1.0" encoding="utf-8" ?> 
<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
  <CustomAction
    Id="ns.customactionribbon"
    Location="CommandUI.Ribbon.DisplayForm"
    RegistrationId="0x01"
    RegistrationType="List"
    Sequence="10000">
    <CommandUIExtension>
      <CommandUIDefinitions>
        <CommandUIDefinition
          Location="Ribbon.ListForm.Display.Groups._children">
              <Group
                Id="Ribbon.SampleRibbonTab.ManageCustomGroup"
                Description="Group to Custom Functions"
                Title="Display Group"
                Sequence="52" 
                Command="EnableCustomGroup" 
                Template="Ribbon.Templates.Flexible2">
                <Controls Id="Ribbon.SampleRibbonTab.ManageCustomGroup.Controls">
                  <Button
                    Id="Ribbon.SampleRibbonTab.ManageCustomGroup.Message"
                    Command="CustomRibbonTab.CustomCommandFirst"
                    Sequence="15"
                    Image32by32="{SiteUrl}/SiteAssets/imgs/noun_16392_cc_32.png"
                    Description="Navigate to first action."
                    LabelText="First Action" TemplateAlias="o1"/>
                  <Button
                   Id="Ribbon.SampleRibbonTab.ManageCustomGroup.Results"
                   Command="CustomRibbonTab.CustomCommandSecond"
                   Sequence="19"
                   Image32by32="{SiteUrl}/SiteAssets/imgs/noun_9276_cc_32.png"
                   Description="Navigate to second action."
                   LabelText="Second Action" TemplateAlias="o1"/>
                </Controls>
              </Group>
        </CommandUIDefinition>
        <CommandUIDefinition 
          Location="Ribbon.ListForm.Display.Scaling._children">
          <MaxSize 
            Id="Ribbon.ListForm.Display.Scaling.CustomGroup.MaxSize" 
            Sequence="15" 
            GroupId="Ribbon.SampleRibbonTab.ManageCustomGroup" 
            Size="LargeLarge" />
        </CommandUIDefinition>
      </CommandUIDefinitions>
      <CommandUIHandlers>
        <CommandUIHandler 
          Command="EnableCustomGroup"
          CommandAction="javascript:return true;" />
        <CommandUIHandler
          Command="CustomRibbonTab.CustomCommandFirst"
          CommandAction="javascript:GoToPage('{SiteUrl}/Pages/SamplePage01.aspx?List={ListId}&amp;projID={ItemId}');"/>
        <CommandUIHandler
          Command ="CustomRibbonTab.CustomCommandSecond"
          CommandAction="javascript:GoToPage('{SiteUrl}/Pages/SamplePage02.aspx?List={ListId}&amp;projID={ItemId}');"/>
      </CommandUIHandlers>
    </CommandUIExtension>
  </CustomAction>
</Elements>