I've been trying to port my xslt 2nd level menu to razor. The idea is to have a menu header depending on which Document Type the current page has. Also, the menu in not nested, just a clean list of the children of 2nd level pages, and when you descend to any of these children, a list of siblings. This is what I had in xslt:

<xsl:param name="currentPage"/>

<xsl:template match="/">

  <xsl:variable name="items" select="$currentPage/ancestor-or-self::* [@isDoc and @level = 2]/* [@isDoc and string(umbracoNaviHide) != '1']"/>
  
<!-- The fun starts here -->
    
<xsl:if test="count($items) &gt; 0">
  <h2>
    <xsl:choose>
        <xsl:when test="$currentPage/ancestor-or-self::DocType1[@isDoc]">
        DocType1 Header
        </xsl:when>
        <xsl:when test="$currentPage/ancestor-or-self::DocType2[@isDoc]">
        DocType2 Header
        </xsl:when>
        <xsl:otherwise>
        Generic Header
        </xsl:otherwise>
    </xsl:choose>
  </h2>
<ul>
<xsl:for-each select="$items">
    <li>
        <a href="{umbraco.library:NiceUrl(@id)}">
        <xsl:value-of select="@nodeName"/>
        </a>
    </li>
</xsl:for-each>
</ul>
</xsl:if>

</xsl:template>
</xsl:stylesheet>

And this is what I have in a Razor Partial View:

@inherits RenderViewPage
@using Umbraco.Cms.Web;
@{var title = "";}
    @{if(DynamicModel.ContentType.Alias == "DocType1"){
        title = "DocType1 Header";
    }
    else if(DynamicModel.ContentType.Alias == "DocType2"){
        title = "DocType2 Header";
    }
    else {
         title = "Generic Header";
    }
    }
<h2>@title</h2>
<ul>
@foreach(var item in DynamicModel.Children) {
    if (@item.CurrentTemplate != null) {
    <li><a href="@item.Url">@item.Name</a></li>
    }
} 
</ul>

My questions are: Can the If part in Razor be optimized? (Converted to a switch or a smaller expression) And, how can I get this menu to show children in the 2nd level, but siblings in the 3rd? (Using .AncestorOrSelf, I guess, but I've only got errors with that). Thanks in advance.