FormEntityContextRule Example

 CustomActions:

        <CustomActions>

          <CustomAction Id="Mscrm.SubGrid.new_test.AddExistingAssocCustom" Location="Mscrm.SubGrid.new_test.AddExistingStandard" Sequence="30" >

            <CommandUIDefinition>

              <Button Id="Mscrm.SubGrid.new_test.AddExistingStandard" Command="Mscrm.AddExistingRecordFromSubGridStandardCustom" Sequence="30" LabelText="CustomAddExistingStd" Alt="$Resources(EntityDisplayName):Ribbon.SubGrid.AddExisting" Image16by16="/_imgs/ribbon/AddExistingStandard_16.png" Image32by32="/_imgs/ribbon/AddExistingStandard_32.png" TemplateAlias="o1" ToolTipTitle="$Resources(EntityDisplayName):Mscrm_SubGrid_EntityLogicalName_MainTab_Management_AddExistingStandard_ToolTipTitle" ToolTipDescription="$Resources(EntityDisplayName):Mscrm_SubGrid_EntityLogicalName_MainTab_Management_AddExistingStandard_ToolTipDescription" />

            </CommandUIDefinition>

          </CustomAction>

          <CustomAction Id="Mscrm.SubGrid.new_test.AddNewStandardCustom" Location="Mscrm.SubGrid.new_test.AddNewStandard" Sequence="20" >

            <CommandUIDefinition>

              <Button Id="Mscrm.SubGrid.new_test.AddNewStandard" Command="Mscrm.AddNewRecordFromSubGridStandardCustom" Sequence="20" LabelText="CustomAddNewStd" Alt="$Resources(EntityDisplayName):Ribbon.SubGrid.AddNew" Image16by16="/_imgs/ribbon/NewRecord_16.png" Image32by32="/_imgs/ribbon/newrecord32.png" TemplateAlias="o1" ToolTipTitle="$Resources(EntityDisplayName):Mscrm_SubGrid_EntityLogicalName_MainTab_Management_AddNewStandard_ToolTipTitle" ToolTipDescription="$Resources(EntityDisplayName):Mscrm_SubGrid_EntityLogicalName_MainTab_Management_AddNewStandard_ToolTipDescription" />

            </CommandUIDefinition>

          </CustomAction>

        </CustomActions>

CommandDefinitions:

        <CommandDefinitions>

          <CommandDefinition Id="Mscrm.AddExistingRecordFromSubGridStandardCustom">

            <EnableRules>

              <EnableRule Id="Mscrm.AppendToPrimary" />

              <EnableRule Id="Mscrm.EntityFormIsEnabled" />

            </EnableRules>

            <DisplayRules>

              <DisplayRule Id="Mscrm.AddExisting" />

              <DisplayRule Id="Mscrm.ShowForOneToManyGrids" />

              <DisplayRule Id="Mscrm.AppendToPrimary" />

              <DisplayRule Id="Mscrm.AppendSelected" />

              <DisplayRule Id="Mscrm.CanWriteSelected" />

              <DisplayRule Id="Mscrm.CustomShow" />

            </DisplayRules>

            <Actions>

              <JavaScriptFunction FunctionName="Mscrm.GridRibbonActions.addExistingFromSubGridStandard" Library="/_static/_common/scripts/RibbonActions.js">

                <CrmParameter Value="SelectedEntityTypeCode" />

                <CrmParameter Value="SelectedControl" />

              </JavaScriptFunction>

            </Actions>

          </CommandDefinition>

          <CommandDefinition Id="Mscrm.AddNewRecordFromSubGridStandardCustom">

            <EnableRules>

              <EnableRule Id="Mscrm.AppendToPrimary" />

              <EnableRule Id="Mscrm.EntityFormIsEnabled" />

            </EnableRules>

            <DisplayRules>

              <DisplayRule Id="Mscrm.ShowForOneToManyGrids" />

              <DisplayRule Id="Mscrm.AppendToPrimary" />

              <DisplayRule Id="Mscrm.CreateSelectedEntityPermission" />

              <DisplayRule Id="Mscrm.AppendSelected" />

              <DisplayRule Id="Mscrm.HideAddNewForChildEntities" />

              <DisplayRule Id="Mscrm.CustomShow" />

            </DisplayRules>

            <Actions>

              <JavaScriptFunction FunctionName="Mscrm.GridRibbonActions.addNewFromSubGridStandard" Library="/_static/_common/scripts/RibbonActions.js">

                <CrmParameter Value="SelectedEntityTypeCode" />

                <CrmParameter Value="PrimaryEntityTypeCode" />

                <CrmParameter Value="FirstPrimaryItemId" />

                <CrmParameter Value="PrimaryControl" />

              </JavaScriptFunction>

            </Actions>

          </CommandDefinition>

        </CommandDefinitions>

RuleDefinition:

        <RuleDefinitions>

          <TabDisplayRules />

          <DisplayRules>

            <DisplayRule Id="Mscrm.CustomShow" >

              <FormEntityContextRule EntityName="account" InvertResult="true" />

            </DisplayRule>

          </DisplayRules>

          <EnableRules />

        </RuleDefinitions>