(.NET Core C#) Upload File with User-Defined Metadata

Demonstrates how to upload a file with user-defined metadata to the Amazon S3 service.

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

// Insert your AWS keys here:
http.AwsAccessKey = "AWS_ACCESS_KEY";
http.AwsSecretKey = "AWS_SECRET_KEY";

string bucketName = "chilkat.ocean";
string objectName = "seahorse.jpg";
string localFilePath = "qa_data/jpg/seahorse.jpg";
string contentType = "image/jpg";

// User-defined metadata are name/value pairs, and are added to the HTTP request header.
// Header names must begin with "x-amz-meta-" to distinguish them from other HTTP headers.
// Note that Amazon S3 stores user-defined metadata keys in lowercase.

// For example, to add genus=Hippocampus, we do this:
http.SetRequestHeader("x-amz-meta-genus","Hippocampus");

// Add a few more user-metadata key pairs.
http.SetRequestHeader("x-amz-meta-species","big-belly seahorse");
http.SetRequestHeader("x-amz-meta-habitat","shallow tropical and temperate waters");

bool success = http.S3_UploadFile(localFilePath,contentType,bucketName,objectName);

if (success != true) {
    Debug.WriteLine(http.LastErrorText);
}
else {
    Debug.WriteLine("File uploaded.");
}