---
title: "How do I simulate optional parameters to COM calls?"  
description: "How do I simulate optional parameters to COM calls?"  
author: "Anonymous User"  
published: 2011-11-04  
updated: 2020-09-18  
canonical: https://www.mindstick.com/interview/1310/how-do-i-simulate-optional-parameters-to-com-calls  
category: "c#"  
tags: ["c#"]  
reading_time: 1 minute  

---

# How do I simulate optional parameters to COM calls?

You must use the Missing class and pass Missing.Value (in System.Reflection) for any values that have optional parameters.

## Answers

### Answer by Amit Singh

You must use the Missing class and pass Missing.Value (in System.Reflection) for any values that have optional parameters.


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Original Source: https://www.mindstick.com/interview/1310/how-do-i-simulate-optional-parameters-to-com-calls

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