Hi Pacoss, the first thing is to determine whether or not to display de or en, you should be able to do this based on the homeNode's id

Once you have the correct text displaying then you have to make sure you link it to the correctly related page, to do this you will need to use 

umbraco.cms.businesslogic.relation.Relation.GetRelations

this takes the current page id and the relation type. From the returned relation you should get a reference to the related page's id and so should be able to add the friendly url for the page based on its id

Hope that helps

sorry but i'm new in umbraco and have no experience and don't know how to write this code ... if there is any example i'd be thankful

and if i'm on 'en' page, my homeNode is 'en', but there should be displayed 'de' in top navigation ...

Hi Pacoss, you actually have a 2 things that need to be resolved, and there is a quick way and a more robust way.

The homeNode will either be 'en' or 'de' each of these have their own node id (eg 1234 and 5678) so in your code you can do something like 

var langLabel = "en";
if (homeNode.Id == "1234")
{
 // if you are in the ne site then the label should be de
    langLabel = "de";
}

 Next you have to find the related page, your code should be something lilke 

// get all the relations based on the relation type relateDocumentOnCopy
Relation[] currentPageRelations = Relation.GetRelations(Model.Id, RelationType.GetByAlias("relateDocumentOnCopy"));

// there should only be 1 relation but you should add in logic to choose the right node just in case
foreach (Relation rel in currentPageRelations)
{ 
    // depending on if you are on en or de the related page could either be the parent or the child
    // set the related page id to the relations parent id
    int relatedPageId = rel.Parent.Id;
    // if the current pages id is the same as the relations parent id then we need to set it to the child id
    if (rel.Parent.Id == Model.Id)
    {
        relatedPageId = rel.Child.Id;
    }
}

 Your final code should end up looking somethign like 

var langLabel = "en";
if (homeNode.Id == "5678")
{
    langLabel = "de";
}

string altLangUrl = string.Empty;

// get all the relations based on the relation type relateDocumentOnCopy
Relation[] currentPageRelations = Relation.GetRelations(Model.Id, RelationType.GetByAlias("relateDocumentOnCopy"));

// there should only be 1 relation but you should add in logic to choose the right node just in case
foreach (Relation rel in currentPageRelations)
{ 
    // depending on if you are on en or de the related page could either be the parent or the child
    // set the related page id to the relations parent id
    int relatedPageId = rel.Parent.Id;
    // if the current pages id is the same as the relations parent id then we need to set it to the child id
    if (rel.Parent.Id == Model.Id)
    {
        relatedPageId = rel.Child.Id;
    }
    altLangUrl = umbraco.library.NiceUrl(relatedPageId);
}

<a href="@altLangUrl">@langLabel</a>

 Use the code as a starting point and then put in breakpoitns to see what values are coming back

Hope it helps

Asif, thanks a lot for code.

of course i used your code but modified a little bit and here it is:

@using umbraco.cms.businesslogic.relation;


<div>
    @{
        var homeNode = Model.AncestorOrSelf(2);
        var rootNode = @Model.AncestorOrSelf();  //Home
        string altLangUrl = string.Empty;
        // get all the relations based on the relation type relateDocumentOnCopy
        Relation[] currentPageRelations = Relation.GetRelations(Model.Id, RelationType.GetByAlias("relateDocumentOnCopy"));

        // there should only be 1 relation but you should add in logic to choose the right node just in case
        foreach (Relation rel in currentPageRelations)
        {
            // depending on if you are on en or de the related page could either be the parent or the child
            // set the related page id to the relations parent id
            int relatedPageId = rel.Parent.Id;
            // if the current pages id is the same as the relations parent id then we need to set it to the child id
            if (rel.Parent.Id == Model.Id)
            {
                relatedPageId = rel.Child.Id;
            }
            altLangUrl = umbraco.library.NiceUrl(relatedPageId);
        }

       
    }
   

    <table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr>

    @* list children pages from the current page (= Model) *@
    @foreach (var page in homeNode.Children)
    {
        <div>
            <td><a href="@page.Url" class="mainlevel">@page.Name</a></td>
        </div>
    }
   
    @* add language *@
    @foreach (var page in rootNode.Children)
    {
        if (@page.Id != @homeNode.Id)
        {
        <div>
            <td><a href="@altLangUrl" class="mainlevel">@page.Name</a></td>
        </div>
        }
    }

        </tr>
    </table>
   
</div>

Good to know you got it working, the only thing where this may fall down a little is if you decide to add another langugae to the site, but for your immediate needs it is looking good

yes, you are right for adding another language, but this site is only in 2 languages.

anyway, thanks again.

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