Dear our.Umbraco.org Community I've been working with umbraco for several weeks now and I created a "cheat-sheet" with all the important stuff I've stumbled accros during developments. I'm a genuinely nice person - therefore I decided to share this file with you. Feel free to share, extend or improve my current Code. I'm still a beginner so don't expect too much. (Tested in Umbraco 7.6.5 and partially in 7.6.6)

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Make a Redirect to Umbraco Login page on Startup for security reasons

(Copy This code into Master.cshtml)

@using Umbraco.Core.Security;

var userTicket = new HttpContextWrapper(HttpContext.Current).GetUmbracoAuthTicket();
    if (userTicket == null)
    {
        Response.Redirect("~/umbraco");
    }

Get Image out of normal Media library

bool hasImage = Model.Content.HasValue("image");
    var image = "";
    if (hasImage)
    {
        var mediaObject = Convert.ToString(Model.Content.GetPropertyValue("image"));
        int mediaIDimage = Convert.ToInt16(mediaObject);
        image = Umbraco.Media(mediaIDimage).Url;
    }


If (hasImage) 
{
<img src=“@image“ …/>
}

Get Media out of Vorto Media library (in this case a pdf)

    IPublishedContent vorto = (IPublishedContent)Model.Content;
    bool hasPDF = Model.Content.HasVortoValue("pdf");
    var pdf = "";
    if (hasPDF) {
        var mediaItem = Convert.ToString(vorto.GetVortoValue<IPublishedContent>("pdf"));
        int mediaID = Convert.ToInt16(mediaItem);
        pdf = Umbraco.Media(mediaID).Url;
    }

If (hasPDF) 
{
<a href=“@pdf“>PDF DOWNLOAD</a>
}

Get content out of a checkbox (in this case it's a checkbox which sets a css value

string style = "";
    if (Convert.ToString(@Model.Content.GetPropertyValue("moveRight")) == "True")
    {
        style = "float:right;";
    }
<a style="@style"></a>

Basic Umbraco Navigation

@{
    var root = CurrentPage.AncestorOrSelf(1);
    var rootSelection = root.Children.Where("Visible");
}
<div class="">
@foreach (var page in rootSelection)
        {
            if (@page.Name != "Page Components")
            {
                string isActive = "";
                if (@page.Name == @Model.Content.Name)
                {
                    isActive = "selected";
                }

                <div class="">
                    <a href="@page.Url" @isActive">@page.Name</a>
                </div>
            }
        }
</div>

1x selection foreach

@{ var selection = CurrentPage.Children.Where("Visible"); }
                @if (selection.Any())
                {

                    foreach (var item in selection)
                    {
                        if (@item.DocumentTypeAlias == "INSERT DOCUMENT TYPE ALIAS")
                        {
                            IPublishedContent ourModel = (IPublishedContent)item;
                            @Html.Partial("folder/INSERT PARTIAL NAME", ourModel)
                        }
                    }
                }

2x selection foreach (show everything but pageComponents)

@{ var selection = CurrentPage.Children.Where("Visible"); }
@if (selection.Any())
{
    foreach (var item in selection)
    {
        if (@item.DocumentTypeAlias == "pageComponents")
        {
            var selection2 = (@item).Children.Where("Visible");
            foreach (var item2 in selection2)
            {
                if (@item2.DocumentTypeAlias == "NAME OF COMPONENT")
                {
                    IPublishedContent ourModel = (IPublishedContent)item2;
                    @Html.Partial("folder/PARTIAL VIEW NAME", ourModel)

                }
            }
        }
    }
}

Get Content from certain Node

int myNodeId = INSERT ID HERE;
    var myNode = Umbraco.TypedContent(myNodeId);

@myNode.GetPropertyValue("PROPERTY NAME")

Multiple Media picker values + Subfolders (if someone uploads a folder filled with images into the media picker)

                     @{
                            var typedMultiMediaPicker = Model.Content.GetPropertyValue<IEnumerable<IPublishedContent>>("pictures");
                            foreach (var item in typedMultiMediaPicker)
                            {

if (item.DocumentTypeAlias == "Folder") { foreach (var image in item.Children("Image")) { } } } }

  Value of Related Links with Vorto

@using Newtonsoft.Json.Linq

@{var itemSelection = item.GetVortoValue<JArray>("link");}
                            @if (itemSelection != null)
                            {
                                foreach (var linkitem in itemSelection)
                                {
                                    var linkUrl = (linkitem.Value<bool>("isInternal")) ? Umbraco.NiceUrl(linkitem.Value<int>("internal")) : linkitem.Value<string>("link");
                                    var linkTarget = linkitem.Value<bool>("newWindow") ? "_blank" : null;
                                    <a href="@linkUrl" target="@linkTarget">@(linkitem.Value<string>("caption"))</a>
                                }
                            }     

Umbraco Sub Navigation Concept

This is a simple demonstration of how to make a simple subnavigation (dynamic)

Step 1: Go to your Umbraco and create a Document Type „SubNavigation“ Step 2: Add a (vorto)TextString „ListName“ (or call it how you want). ListName ist the name that is displayed in the subnavigation. Step 3: Add this SubNavigation Document Type via Composition to every other tab. Step 4: Go to each DocumentType and add the Current ID in a hyper reference tag. Like this:

<a href=“component-@Model.Id“></a>

Step 5: Go to your navigation partial (or wherever you render your navigation) and make a 2x foreach selection (there is already a good example fort hat in this document) Step 6: Inside your 2x foreach loop you add this Code: IPublishedContent currentPage = Umbraco.TypedContent(@item2.Id);

<a href="@page.Url#component-@item2.Id">@currentPage.GetVortoValue("listName")</a> 

Info: I used a 2x loop because i my structure is like this:

-Site  
  -PageComponents
       -Component 1
       -Component 2
       -...

@item2 is the inner Selection oft he 2x foreach @page is the current Page you’re at. I used it for my main navigation.

That's it :)

Greetings - Tim