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POPassing objects and a list of objects by reference in C#
 

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    <p>I have a delegate that modifies an object. I pass an object to the delegate from a calling method, however the calling method does not pick up these changes. The same code works if I pass a <code>List</code> as the object.</p> <p>I thought all objects were passed by reference so any modifications would be reflected in the calling method. Is that correct?</p> <p>I can modify my code to pass a <code>ref</code> object to the delegate. But I am wondering why this is necessary. Or is it?</p> <pre><code>public class Binder { protected delegate int MyBinder&lt;T&gt;(object reader, T myObject); public void BindIt&lt;T&gt;(object reader, T myObject) { //m_binders is a hashtable of binder objects MyBinder&lt;T&gt; binder = m_binders["test"] as MyBinder&lt;T&gt;; int i = binder(reader, myObject); } } public class MyObjectBinder { public MyObjectBinder() { m_delegates["test"] = new MyBinder&lt;MyObject&gt;(BindMyObject); } private int BindMyObject(object reader, MyObject obj) { obj = new MyObject { //update properties }; return 1; } } ///calling method in some other class public void CallingMethod() { MyObject obj = new MyObject(); MyObjectBinder binder = new MyObjectBinder(); binder.BindIt(myReader, obj); //don't worry about myReader //obj should show reflected changes } </code></pre> <p><strong>Update:</strong></p> <p>I am now passing objects by <code>ref</code> to the delegate as I am instantiating a new object inside <code>BindMyObject</code>.</p> <pre><code>protected delegate int MyBinder&lt;T&gt;(object reader, ref T myObject); </code></pre>
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    1. COI realize you're trying to hide original names, here, but you've got to clean this up. `MyBinder` inside `CallingMethod` isn't definied, `MyObjectBinder` isn't used... are they the same? I can only try to assume, and I don't want to do that...
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