Service Messages .NET library for 
This library provides read/write access to TeamCity Service messages. Take a look at the description of service messages at this page.
Usage:
Most use cases are covered in tests.
To create service message, use:
JetBrains.TeamCity.ServiceMessages.Write.ServiceMessageFormatter.FormatMessageTo parse service messages, use:
JetBrains.TeamCity.ServiceMessages.Read.ServiceMessageParser.ParseServiceMessagesThere is an API to generate TeamCity specific service messages, use:
JetBrains.TeamCity.ServiceMessages.Write.Special.ITeamCityWriterto get the instance of the object create an instance of the factory and get it by:
new JetBrains.TeamCity.ServiceMessages.Write.Special.TeamCityServiceMessages().CreateWriter()for example:
// Creating the root writer
using (var writer = new TeamCityServiceMessages().CreateWriter(Console.WriteLine))
// Creating the build log block "Tests"
using (var block = writer.OpenBlock("Tests"))
// Creating the test suite "Tests"
using (var testClass = block.OpenTestSuite("TestClass"))
{
// Creating the successful test
using (var test = testClass.OpenTest("Successful"))
{
test.WriteStdOutput("Some output");
test.WriteDuration(TimeSpan.FromSeconds(1));
}
// Creating the ignored test
using (var test = testClass.OpenTest("Ignored"))
{
test.WriteIgnored();
}
// Creating the failed test
using (var test = testClass.OpenTest("Failed"))
{
test.WriteFailed("Some message", "Details");
}
// Attaching an image to test
using (var test = testClass.OpenTest("Image"))
{
writer.PublishArtifact(Path.GetFullPath("TeamCity.png") + " => TestData");
test.WriteImage("TestData/TeamCity.png", "Team City Logo");
}
// Attaching a value to test
using (var test = testClass.OpenTest("Value"))
{
test.WriteValue(1234.56.ToString(CultureInfo.InvariantCulture), "Some Value");
}
// Attaching a file to test
using (var test = testClass.OpenTest("File"))
{
writer.PublishArtifact(Path.GetFullPath("TeamCity.png") + " => TestData");
test.WriteFile("TestData/TeamCity.png", "Team City Logo file");
}
// Attaching a link to test
using (var test = testClass.OpenTest("Link"))
{
test.WriteLink("https://www.jetbrains.com/", "JetBrains");
}
}