# Show All Instances
**Find specific objects in memory that you want to explore**

## Overview

OzCode makes it trivial to find specific objects in memory that you want to explore. Just open ***Show All Instances of Type***, and you’ll be able to see every object of that type that’s currently in memory. Why is that object still in memory? Are there any objects that contain this value? OzCode effortlessly and instantly answers these questions and more.

## Using Show All Instances

In order to run this demo click the _Show All Instances_ button in the demo application.  
![Show All Instances button](Resources/ShowAllInstancesButton.PNG)   

Immediatly a message box pops up since an exception was thrown:

![Exception](Resources/exceptionCaught.PNG)
 
Not very informative and we need to investigate this problem further.  
 
To understand the problem we need to break when the exception is thrown, and so we can either use Visual Studio's built in exception settings dialog, or simply click the "Break on all CLR excetions" button:

![Break on all CLR exceptions](Resources/breakonexceptions.png) 

Re-run the sample - you should break on _SendInvoice_ call:

![Exception thrown](Resources/exceptionThrown.PNG)

A quick check should show the problem with this method call --> __customerEmail is null__ which should not happen.

![Customer is null](Resources/customerIsNull.PNG)

Unfortunalty _InvoiceService_ implementation makes it hard for us to find which _Customer_ caused the problem. And although we can quickly fix this issue by adding a check, we still need to find the offending customer!
Since we only have the _invoiceID_ we can look for it using OzCode's ***Search***.  

Use the watch to view __pendingInvoiceId__ and choose 'Copy Value':

![Copy value](Resources/copyValue.png)

Then, put your caret on the word 'Customer' (the class name) above and open the ***QuickActions*** menu:

![Quick Actions](Resources/showQuickActions.PNG)

Choose 'Show all instaces of Customer' to make the dialog appear.
Paste the invoice value in the seatch box (buttom) to search for the _invoiceID_ you just copied:

![Search for customer](Resources/SearchForCustomer.PNG)

Using the little 'eye' we can expand the selected customer to see all of the instance properties, and look for the _emailAddress_

![Expend customer](Resources/viewWholeCustomer.PNG)

Finally we can see that that customer was loaded without an _emailAdress_ which means that we might have a data corruption problem on our hands.

![No email](Resources/emailIsNullInCustomer.PNG)

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