User guide

}

FileStream s = new FileStream( "s3Object.txt", FileMode.Create );

StreamWriter writer = new StreamWriter( s );

writer.WriteLine( responseBody );

}

catch (AmazonS3Exception s3Exception) {

Console.WriteLine(s3Exception.Message, s3Exception.InnerException);

}

} // main

} // class

} // namespace

You can test this program, by filling in your own credentials in an App.config. The following example

shows the lines you would need to edit.

<?xml version="1.0"?>

</appSettings>

</startup>

</configuration>

You should also specify the name of an Amazon S3 bucket and text object associated with your account.

static string bucketName = "text-content";

static string keyName = "text-object.txt";

For instructions on how to create an Amazon S3 bucket and upload an object, go to the Amazon Simple

Storage Service Getting Started Guide.

After you have configured the program for your environment (credentials and target object to retrieve),

you can compile and run it.You can compile the program in Visual Studio or from a Visual Studio Command

Prompt. Here is a sample command line for compiling the program (here called get-object.cs).You

will need to adjust the path to the AWS assembly (AWSSDK.dll) to match the location of the assembly

on your computer. When you run the program, the assembly should be in the General Assembly Cache

(GAC) or in the same directory as the program.

csc get-object.cs /r:c:\aws-sdk-net\bin\AWSSDK.dll

Update the Sample Program for IAM Roles for Amazon EC2

Instances

Our next stage is to update this program to run from an Amazon EC2 instance using IAM roles for Amazon

EC2 instances. Here are the high-level steps.

1. Create the Role

2. Launch an Amazon EC2 Instance with the Corresponding Instance Profile

Version v2.0.0

AWS SDK for .NET Developer Guide

Walkthrough: Using IAM Roles to Retrieve an Amazon

S3 Object from an Amazon EC2 Instance