\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{mrtgr}
\pdfinfo{
  /Title (unity-framework.pdf)
  /Creator (Cheatography)
  /Author (mrtgr)
  /Subject (Unity Framework Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{2180A3}
\definecolor{LightBackground}{HTML}{F1F7F9}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Unity Framework Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{mrtgr} via \textcolor{DarkBackground}{\uline{cheatography.com/23460/cs/5171/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}mrtgr \\
  \uline{cheatography.com/mrtgr} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 28th December, 2017.\\
   Updated 12th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{FindById}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{var entity = \seqsplit{entityRepository.FindById(entity}.Id)}} \newline  \newline //Load with properties \newline {\bf{var entity = \seqsplit{entityRepository.FindById(entity.Id}, x=\textgreater{} x.OtherEntity, t=\textgreater{}t.AnotherEntityCollection);}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{You can include properties with the query seperated by coma. This method calls {\emph{FindAll}} with {\emph{SingleOrDefault}} method.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{FindAll}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{//Parameterles. \newline {\bf{entityRepository.FindAll();}} \newline  \newline //Get entities which SomeProperty = Predicate \newline {\bf{entity.Repository.FindAll(x=\textgreater{}x.SomeProperty == "Predicate");}} \newline  \newline //Get entity and its Child Collection \newline {\bf{entity.Repository.FindAll(x=\textgreater{}x.ChildCollection)}} \newline  \newline //Get entities which SomeProperty = Predicate and include Child Collection \newline {\bf{entity.Repository.FindAll(x=\textgreater{}x.SomeProperty= "Predicate" , t=\textgreater{}t.ChildCollection);}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{You can extend search result with {\emph{DynamicQueryable}} methods like where, select, skip, orderby,groupby etc.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Add}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{//Entity without a parent \newline entity = new entity() \{ ... \}; \newline entityRepository.Add(entity); \newline  \newline //Child object that has parent \newline entity = new entity() \{ ... , parentId= 3 \}; \newline entityRepository.Add(entity); \newline //OR \newline //Child Object that has parent \newline entity = new entity() \{ ... \}; \newline parent = \seqsplit{parentRepository.FindyById(parentId);} \newline parent.ChildEntityCollection.Add(entity);} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{You have 3 options. If entity doesn't have a parent, simply add with repository. Else if entity has parent you must set its parentId or set parents itself.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Remove}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{//With Entity Id \newline {\bf{someModelRepository.Remove(entity.Id);}} \newline  \newline //With Entity \newline {\bf{someModelRepository.Remove(entity);}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{This code will raises an error if entity has child object and relation in the DB doesn't {\bf{cascade delete}}.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{How to delete child object}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{//One-To-One Relation \newline {\bf{parent.Child = null;}} \newline  \newline //One-To-Many Relation \newline {\bf{parent.ChildCollection.Remove(Child);}} \newline //OR \newline {\bf{parent.ChildCollection.Clear()}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{One-To-Many Relations: Remember to mark {\emph{parentId}} property in child entity with {\emph{{[}Owner{]}}} attribute. Also in setter method of the parent navigation property, set {\emph{parentId = 0}} if {\emph{value == null}}. If not, you'll get orphaned entity exception}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{UnitOfWork}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{{\bf{try}} \newline {\bf{\{}} \newline     {\bf{using (unitOfWorkFactory.Create())}} \newline     {\bf{\{}} \newline          //Add, Remove, Modify \newline     {\bf{\}}} \newline {\bf{\}}} \newline {\bf{catch \seqsplit{(ModelValidationException} mvex)}} \newline {\bf{\{}} \newline     {\bf{foreach (var error in mvex.ValidationErrors)}} \newline     {\bf{\{}} \newline         {\bf{ModelState.AddModelError(error.MemberNames.FirstOrDefault() ?? "", error.ErrorMessage);}} \newline     {\bf{\}}} \newline {\bf{\}}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{You must use {\emph{UnitOfWork}} if you want to add, edit or delete.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}