optimize-compiler-option.md

title	ms.date	ms.prod	ms.technology	ms.topic	f1_keywords	dev_langs	helpviewer_keywords	ms.assetid	caps.latest.revision	author	ms.author	translation.priority.ht
-optimize (C# Compiler Options)	2015-07-20	.net	devlang-csharp	article	/optimize	CSharp	/optimize compiler option [C#] -o compiler option [C#] optimize compiler option [C#] /o compiler option [C#] -optimize compiler option [C#] compiler optimization [C#] o compiler option [C#]	6dd5b6f2-cd1d-4593-a9f4-1c2ed9404ca0	15	BillWagner	wiwagn	cs-cz de-de es-es fr-fr it-it ja-jp ko-kr pl-pl pt-br ru-ru tr-tr zh-cn zh-tw

/optimize (C# Compiler Options)

The /optimize option enables or disables optimizations performed by the compiler to make your output file smaller, faster, and more efficient.

Syntax

/optimize[+ | -]  

Remarks

/optimize also tells the common language runtime to optimize code at runtime.

By default, optimizations are disabled. Specify /optimize+ to enable optimizations.

When building a module to be used by an assembly, use the same /optimize settings as those of the assembly.

/o is the short form of /optimize.

It is possible to combine the /optimize and /debug options.

To set this compiler option in the Visual Studio development environment

1. Open the project's Properties page.

2. Click the Build property page.

3. Modify the Optimize Code property.

For information on how to set this compiler option programmatically, see xref:VSLangProj80.CSharpProjectConfigurationProperties3.Optimize%2A.

Example

Compile t2.cs and enable compiler optimizations:

csc t2.cs /optimize  

See Also

C# Compiler Options
Managing Project and Solution Properties