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    <p>In a generic way, you may use an expression tree and check with an extension method:</p> <pre><code>if (!person.IsNull(p =&gt; p.contact.address.city)) { //Nothing is null } </code></pre> <p>Full code:</p> <pre><code>public class IsNullVisitor : ExpressionVisitor { public bool IsNull { get; private set; } public object CurrentObject { get; set; } protected override Expression VisitMember(MemberExpression node) { base.VisitMember(node); if (CheckNull()) { return node; } var member = (PropertyInfo)node.Member; CurrentObject = member.GetValue(CurrentObject,null); CheckNull(); return node; } private bool CheckNull() { if (CurrentObject == null) { IsNull = true; } return IsNull; } } public static class Helper { public static bool IsNull&lt;T&gt;(this T root,Expression&lt;Func&lt;T, object&gt;&gt; getter) { var visitor = new IsNullVisitor(); visitor.CurrentObject = root; visitor.Visit(getter); return visitor.IsNull; } } class Program { static void Main(string[] args) { Person nullPerson = null; var isNull_0 = nullPerson.IsNull(p =&gt; p.contact.address.city); var isNull_1 = new Person().IsNull(p =&gt; p.contact.address.city); var isNull_2 = new Person { contact = new Contact() }.IsNull(p =&gt; p.contact.address.city); var isNull_3 = new Person { contact = new Contact { address = new Address() } }.IsNull(p =&gt; p.contact.address.city); var notnull = new Person { contact = new Contact { address = new Address { city = "LONDON" } } }.IsNull(p =&gt; p.contact.address.city); } } </code></pre>
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    1. POCleaner way to do a null check in C#?
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    1. USPeter Mortensen
    1. USToto
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    1. COLove it. Came halfway to this With extension Methods, but using Expressions makes it totally sweet!
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      1. USPeter Lillevold
    2. COIsn't your `if` reversed? `if(person.IsNull(...)) {/* Something is null */} else {/* Nothing is null */}`
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      1. USKobi
    3. COIs there an equivalent in java?
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      1. USsjakubowski
 

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