/// <summary>
/// Generates a sample version manifest JSON text.
/// </summary>
/// <returns>A sample version manifest in JSON format</returns>
public static string GenerateSampleJson()
{
VersionManifest manifest = new VersionManifest
{
Versions = new List <VersionManifestEntry>
{
new VersionManifestEntry
{
Version = new Version(1, 0),
InfoUri = "http://example.com/v1.0/whats_new.html",
DownloadUri = "http://example.com/v1.0/release.zip"
},
new VersionManifestEntry
{
Version = new Version(1, 0, 3, 2),
DownloadUri = "http://example.com/v1.0.3.2/release.tar.gz"
},
new VersionManifestEntry
{
Version = new Version(1, 1),
InfoUri = "http://example.com/v1.1/whats_new.php"
},
new VersionManifestEntry
{
Version = new Version(1, 1, 5)
}
}
};
return(JsonConvert.SerializeObject(manifest, Formatting.Indented));
}
/// <summary>
/// Updates the internal version manifest by querying the QueryUri.
/// </summary>
/// <returns>True if the current version is outdated.</returns>
/// <example>
///
/// // Create a new UpdateChecker that queries the specified URI with the CurrentVersion defined as 1.0
/// UpdateChecker checker = new UpdateChecker("http://convex.st4r.io/sample/version.manifest");
///
/// // Check for an update, and print.
/// Console.WriteLine(checker.CheckForUpdates() ? "Update is available!" : "Latest version is in use.");
///
/// </example>
public bool CheckForUpdates()
{
WebClient client = new WebClient();
if (Headers != null)
{
client.Headers = Headers;
}
string manifest = client.DownloadString(QueryUri);
versionManifest = JsonConvert.DeserializeObject <VersionManifest>(manifest);
return(CurrentVersion < LatestVersion);
}
